diff --git a/backend/apps/benchmarks/api.py b/backend/apps/benchmarks/api.py
index 34ef928..5969939 100644
--- a/backend/apps/benchmarks/api.py
+++ b/backend/apps/benchmarks/api.py
@@ -257,7 +257,12 @@ def get_benchmark_case(request: HttpRequest, suite: str, case_id: str, revision:
         raise HttpError(404, f"Revision {target.revision} has no public case {case_id!r}.")
     runs = leaderboard.latest_per_tool_and_case(leaderboard.approved_runs(target), case_id=case.pk)
     with_public_screenshots(runs)
-    return {**_case_out(case), "revision": target.revision, "runs": [_run_out(r) for r in runs]}
+    return {
+        **_case_out(case),
+        "revision": target.revision,
+        "revision_is_current": target.is_current,
+        "runs": [_run_out(r) for r in runs],
+    }
 
 
 @router.get(
@@ -298,6 +303,7 @@ def get_benchmark_tool_report(
         "tool": leaderboard.tool_ref(tool),
         "suite": suite,
         "revision": target.revision,
+        "revision_is_current": target.is_current,
         "scope": scope,
         "case_count": target.cases.count(),
         "surfaces": surfaces,
@@ -331,6 +337,7 @@ def get_benchmark_run(request: HttpRequest, run_id: str):
         "tier": submission.tier,
         "notes": submission.notes,
         "revision": run.case.revision.revision,
+        "revision_is_current": run.case.revision.is_current,
     }
 
 
diff --git a/backend/apps/benchmarks/schemas.py b/backend/apps/benchmarks/schemas.py
index 1ba2e71..f05db6a 100644
--- a/backend/apps/benchmarks/schemas.py
+++ b/backend/apps/benchmarks/schemas.py
@@ -168,10 +168,14 @@ class RunDetailOut(RunOut):
     tier: str
     notes: str
     revision: str
+    #: False for a superseded revision - the site links only those with `?revision=`.
+    revision_is_current: bool
 
 
 class CaseDetailOut(CaseOut):
     revision: str
+    #: False for a superseded revision - the site links only those with `?revision=`.
+    revision_is_current: bool
     runs: list[RunOut]
 
 
@@ -187,6 +191,8 @@ class ToolReportOut(Schema):
     tool: ToolRefOut
     suite: str
     revision: str
+    #: False for a superseded revision - the site links only those with `?revision=`.
+    revision_is_current: bool
     scope: Literal["all", "verified"]
     case_count: int
     surfaces: list[ToolSurfaceOut]
diff --git a/backend/openapi.json b/backend/openapi.json
index 81a1ef3..5128843 100644
--- a/backend/openapi.json
+++ b/backend/openapi.json
@@ -7198,6 +7198,10 @@
             "title": "Revision",
             "type": "string"
           },
+          "revision_is_current": {
+            "title": "Revision Is Current",
+            "type": "boolean"
+          },
           "runs": {
             "items": {
               "$ref": "#/components/schemas/RunOut"
@@ -7215,6 +7219,7 @@
           "pdf_url",
           "preview",
           "revision",
+          "revision_is_current",
           "runs"
         ],
         "title": "CaseDetailOut",
@@ -7482,6 +7487,10 @@
             "title": "Revision",
             "type": "string"
           },
+          "revision_is_current": {
+            "title": "Revision Is Current",
+            "type": "boolean"
+          },
           "scope": {
             "enum": [
               "all",
@@ -7506,6 +7515,7 @@
           "tool",
           "suite",
           "revision",
+          "revision_is_current",
           "scope",
           "case_count",
           "surfaces"
@@ -7712,6 +7722,10 @@
           "revision": {
             "title": "Revision",
             "type": "string"
+          },
+          "revision_is_current": {
+            "title": "Revision Is Current",
+            "type": "boolean"
           }
         },
         "required": [
@@ -7741,7 +7755,8 @@
           "tool_version",
           "tier",
           "notes",
-          "revision"
+          "revision",
+          "revision_is_current"
         ],
         "title": "RunDetailOut",
         "type": "object"
diff --git a/backend/tests/test_benchmarks_api.py b/backend/tests/test_benchmarks_api.py
index 2316525..22298c0 100644
--- a/backend/tests/test_benchmarks_api.py
+++ b/backend/tests/test_benchmarks_api.py
@@ -121,6 +121,29 @@ def test_a_run_page_carries_the_whole_report(client, published):
     assert body["scored_by"] == "submitter"
 
 
+def _detail_urls(run):
+    return [
+        f"{BASE}/suites/pdf/cases/extraction-conditions-1?revision=v0.1.1",
+        f"{BASE}/suites/pdf/tools/pdf-redaction?revision=v0.1.1",
+        f"{BASE}/runs/{run.run_id}",
+    ]
+
+
+def test_a_detail_page_says_its_revision_is_the_current_one(client, published):
+    """So the site can link the clean URL rather than a `?revision=` copy of it."""
+    for url in _detail_urls(published):
+        assert client.get(url).json()["revision_is_current"] is True, url
+
+
+def test_a_detail_page_says_when_its_revision_has_been_superseded(client, published):
+    revision = published.case.revision
+    revision.is_current = False
+    revision.save()
+
+    for url in _detail_urls(published):
+        assert client.get(url).json()["revision_is_current"] is False, url
+
+
 def test_a_run_not_yet_approved_is_not_public(client, published):
     published.submission.status = SubmissionStatus.PENDING_REVIEW
     published.submission.save()
diff --git a/frontend/src/app/(site)/benchmarks/[suite]/page.tsx b/frontend/src/app/(site)/benchmarks/[suite]/page.tsx
index e135839..9a360e6 100644
--- a/frontend/src/app/(site)/benchmarks/[suite]/page.tsx
+++ b/frontend/src/app/(site)/benchmarks/[suite]/page.tsx
@@ -4,7 +4,7 @@ import { notFound } from 'next/navigation'
 
 import { BenchmarkSuiteView } from '@/features/benchmarks/benchmark-suite-view'
 import { getGetBenchmarkSuiteQueryKey } from '@/lib/api/generated/benchmarks/benchmarks'
-import { parseBenchmarkParams } from '@/lib/benchmarks/params'
+import { isAlternateView, parseBenchmarkParams } from '@/lib/benchmarks/params'
 import { fetchBenchmarkSuite } from '@/lib/benchmarks/server'
 import { clientEnv } from '@/lib/env'
 import { getQueryClient } from '@/lib/query/client'
@@ -25,8 +25,10 @@ export async function generateMetadata({
     title: `${data.name} benchmark ${data.revision.revision} — leak rates by tool`,
     description: `${data.leaderboard.length} redaction tools scored on ${data.cases.length} synthetic cases: how many sensitive values each leaves recoverable, with 95% intervals.`,
     ...canonicalMetadata(`/benchmarks/${suite}`),
-    // Another revision or the verified-only view is the same page sliced differently.
-    robots: query.revision || query.scope !== 'all' ? { index: false, follow: true } : undefined,
+    // An older revision or the verified-only view is the same page sliced differently.
+    robots: isAlternateView(query, data.revision.is_current)
+      ? { index: false, follow: true }
+      : undefined,
   }
 }
 
diff --git a/frontend/src/app/(site)/benchmarks/[suite]/tools/[slug]/page.tsx b/frontend/src/app/(site)/benchmarks/[suite]/tools/[slug]/page.tsx
index b296cb3..9888cc7 100644
--- a/frontend/src/app/(site)/benchmarks/[suite]/tools/[slug]/page.tsx
+++ b/frontend/src/app/(site)/benchmarks/[suite]/tools/[slug]/page.tsx
@@ -5,7 +5,7 @@ import { notFound } from 'next/navigation'
 import { ToolReportView } from '@/features/benchmarks/tool-report-view'
 import { getGetBenchmarkToolReportQueryKey } from '@/lib/api/generated/benchmarks/benchmarks'
 import { formatRate } from '@/lib/benchmarks/format'
-import { parseBenchmarkParams } from '@/lib/benchmarks/params'
+import { isAlternateView, parseBenchmarkParams } from '@/lib/benchmarks/params'
 import { fetchBenchmarkToolReport } from '@/lib/benchmarks/server'
 import { getQueryClient } from '@/lib/query/client'
 import { canonicalMetadata } from '@/lib/seo/canonical'
@@ -25,7 +25,9 @@ export async function generateMetadata({
     title: `${report.tool.name} redaction benchmark — ${headline ? formatRate(headline.leak_rate) : ''} leak rate`,
     description: `How many sensitive values ${report.tool.name} leaves recoverable in our ${suite.toUpperCase()} benchmark ${report.revision}, by layer, category and case, with overlays.`,
     ...canonicalMetadata(`/benchmarks/${suite}/tools/${slug}`),
-    robots: query.revision || query.scope !== 'all' ? { index: false, follow: true } : undefined,
+    robots: isAlternateView(query, report.revision_is_current)
+      ? { index: false, follow: true }
+      : undefined,
   }
 }
 
diff --git a/frontend/src/features/benchmarks/benchmark-suite-view.test.tsx b/frontend/src/features/benchmarks/benchmark-suite-view.test.tsx
index f8693ab..29e4b32 100644
--- a/frontend/src/features/benchmarks/benchmark-suite-view.test.tsx
+++ b/frontend/src/features/benchmarks/benchmark-suite-view.test.tsx
@@ -34,6 +34,15 @@ describe('BenchmarkSuiteView', () => {
       name: /first page of extraction-conditions-1/i,
     })
     expect(thumbnail.closest('a')).toHaveAttribute(
+      'href',
+      '/benchmarks/pdf/cases/extraction-conditions-1',
+    )
+  })
+
+  it('names a superseded revision in its case links', () => {
+    render(makeSuite({ revision: makeRevision({ is_current: false }) }))
+
+    expect(screen.getByRole('link', { name: 'extraction-conditions-1' })).toHaveAttribute(
       'href',
       '/benchmarks/pdf/cases/extraction-conditions-1?revision=v0.1.1',
     )
@@ -65,12 +74,24 @@ describe('BenchmarkSuiteView', () => {
     expect(screen.getByText('v0.1.1')).toHaveAttribute('aria-current', 'page')
   })
 
+  // Viewing an old revision, the way back is the plain page, not a named copy of it.
+  it('links the current revision by its plain URL', () => {
+    render(
+      makeSuite({
+        revision: makeRevision({ revision: 'v0.1.0', is_current: false }),
+        revisions: [makeRevision(), makeRevision({ revision: 'v0.1.0', is_current: false })],
+      }),
+    )
+
+    expect(screen.getByRole('link', { name: 'v0.1.1' })).toHaveAttribute('href', '/benchmarks/pdf')
+  })
+
   it('switches between every result and the ones we scored or verified', () => {
     render()
 
     expect(screen.getByRole('link', { name: /verified only/i })).toHaveAttribute(
       'href',
-      '/benchmarks/pdf?revision=v0.1.1&scope=verified',
+      '/benchmarks/pdf?scope=verified',
     )
   })
 
diff --git a/frontend/src/features/benchmarks/benchmark-suite-view.tsx b/frontend/src/features/benchmarks/benchmark-suite-view.tsx
index 1d3e7aa..ab15a4e 100644
--- a/frontend/src/features/benchmarks/benchmark-suite-view.tsx
+++ b/frontend/src/features/benchmarks/benchmark-suite-view.tsx
@@ -8,6 +8,7 @@ import { Card, CardDescription, CardTitle } from '@/components/ui/card'
 import { Skeleton } from '@/components/ui/skeleton'
 import { useGetBenchmarkSuite } from '@/lib/api/generated/benchmarks/benchmarks'
 import type { GetBenchmarkSuiteParams } from '@/lib/api/generated/model'
+import { benchmarkHref } from '@/lib/benchmarks/params'
 import { cn } from '@/lib/utils'
 
 import { previewAlt } from './case-preview'
@@ -30,7 +31,8 @@ export function BenchmarkSuiteView({
   if (!data) return <Skeleton className="h-64 w-full" />
 
   const revision = data.revision.revision
-  const base = `/benchmarks/${suite}?revision=${revision}`
+  const at = { revision, isCurrent: data.revision.is_current }
+  const caseHref = (caseId: string) => benchmarkHref(`/benchmarks/${suite}/cases/${caseId}`, at)
 
   return (
     <div className="space-y-10">
@@ -67,7 +69,10 @@ export function BenchmarkSuiteView({
                 ) : (
                   <Link
                     key={r.revision}
-                    href={`/benchmarks/${suite}?revision=${r.revision}`}
+                    href={benchmarkHref(`/benchmarks/${suite}`, {
+                      revision: r.revision,
+                      isCurrent: r.is_current,
+                    })}
                     className="text-muted-foreground hover:underline"
                   >
                     {r.revision}
@@ -77,10 +82,16 @@ export function BenchmarkSuiteView({
             </nav>
           </div>
           <nav aria-label="Which results" className="flex gap-1 text-sm">
-            <ScopeLink href={base} active={data.scope === 'all'}>
+            <ScopeLink
+              href={benchmarkHref(`/benchmarks/${suite}`, at)}
+              active={data.scope === 'all'}
+            >
               All results
             </ScopeLink>
-            <ScopeLink href={`${base}&scope=verified`} active={data.scope === 'verified'}>
+            <ScopeLink
+              href={benchmarkHref(`/benchmarks/${suite}`, { ...at, scope: 'verified' })}
+              active={data.scope === 'verified'}
+            >
               Verified only
             </ScopeLink>
           </nav>
@@ -88,6 +99,7 @@ export function BenchmarkSuiteView({
         <LeaderboardTable
           suite={suite}
           revision={revision}
+          isCurrent={data.revision.is_current}
           rows={data.leaderboard}
           caseCount={data.cases.length + data.holdout_case_count}
         />
@@ -117,7 +129,7 @@ export function BenchmarkSuiteView({
               <Card className="space-y-3 p-4">
                 {item.preview ? (
                   <Link
-                    href={`/benchmarks/${suite}/cases/${item.case_id}?revision=${revision}`}
+                    href={caseHref(item.case_id)}
                     className="border-border block overflow-hidden rounded-md border"
                   >
                     {/* The page itself: which case is which is easier to see than to read. */}
@@ -136,10 +148,7 @@ export function BenchmarkSuiteView({
                   </Link>
                 ) : null}
                 <CardTitle className="font-mono text-sm">
-                  <Link
-                    href={`/benchmarks/${suite}/cases/${item.case_id}?revision=${revision}`}
-                    className="hover:underline"
-                  >
+                  <Link href={caseHref(item.case_id)} className="hover:underline">
                     {item.case_id}
                   </Link>
                 </CardTitle>
diff --git a/frontend/src/features/benchmarks/case-view.tsx b/frontend/src/features/benchmarks/case-view.tsx
index 8fb4bbe..74123e8 100644
--- a/frontend/src/features/benchmarks/case-view.tsx
+++ b/frontend/src/features/benchmarks/case-view.tsx
@@ -6,6 +6,7 @@ import { Button } from '@/components/ui/button'
 import { Skeleton } from '@/components/ui/skeleton'
 import { useGetBenchmarkCase } from '@/lib/api/generated/benchmarks/benchmarks'
 import type { GetBenchmarkCaseParams } from '@/lib/api/generated/model'
+import { benchmarkHref } from '@/lib/benchmarks/params'
 
 import { CasePreview } from './case-preview'
 import { RunCards } from './run-cards'
@@ -37,7 +38,13 @@ export function CaseView({
     <div className="space-y-10">
       <header className="space-y-3">
         <p className="text-muted-foreground text-sm">
-          <Link href={`/benchmarks/${suite}?revision=${data.revision}`} className="hover:underline">
+          <Link
+            href={benchmarkHref(`/benchmarks/${suite}`, {
+              revision: data.revision,
+              isCurrent: data.revision_is_current,
+            })}
+            className="hover:underline"
+          >
             {suite.toUpperCase()} benchmark {data.revision}
           </Link>
         </p>
diff --git a/frontend/src/features/benchmarks/fixtures.ts b/frontend/src/features/benchmarks/fixtures.ts
index 9170314..b952e13 100644
--- a/frontend/src/features/benchmarks/fixtures.ts
+++ b/frontend/src/features/benchmarks/fixtures.ts
@@ -152,6 +152,7 @@ export function makeToolReport(overrides: Partial<ToolReportOut> = {}): ToolRepo
     tool: row.tool,
     suite: 'pdf',
     revision: 'v0.1.1',
+    revision_is_current: true,
     scope: 'all',
     case_count: 4,
     surfaces: [
@@ -176,7 +177,13 @@ export function makeToolReport(overrides: Partial<ToolReportOut> = {}): ToolRepo
 }
 
 export function makeCaseDetail(overrides: Partial<CaseDetailOut> = {}): CaseDetailOut {
-  return { ...makeCase(), revision: 'v0.1.1', runs: [makeRun()], ...overrides }
+  return {
+    ...makeCase(),
+    revision: 'v0.1.1',
+    revision_is_current: true,
+    runs: [makeRun()],
+    ...overrides,
+  }
 }
 
 export function makeRunDetail(overrides: Partial<RunDetailOut> = {}): RunDetailOut {
@@ -201,6 +208,7 @@ export function makeRunDetail(overrides: Partial<RunDetailOut> = {}): RunDetailO
     tier: 'Free',
     notes: '',
     revision: 'v0.1.1',
+    revision_is_current: true,
     ...overrides,
   }
 }
diff --git a/frontend/src/features/benchmarks/leaderboard-table.test.tsx b/frontend/src/features/benchmarks/leaderboard-table.test.tsx
index 297a5d4..abb3fe5 100644
--- a/frontend/src/features/benchmarks/leaderboard-table.test.tsx
+++ b/frontend/src/features/benchmarks/leaderboard-table.test.tsx
@@ -6,9 +6,15 @@ import { renderWithProviders } from '@/test/render'
 import { makeRate, makeRow } from './fixtures'
 import { LeaderboardTable } from './leaderboard-table'
 
-function render(rows = [makeRow()], caseCount = 4) {
+function render(rows = [makeRow()], caseCount = 4, isCurrent = true) {
   return renderWithProviders(
-    <LeaderboardTable suite="pdf" rows={rows} caseCount={caseCount} revision="v0.1.1" />,
+    <LeaderboardTable
+      suite="pdf"
+      rows={rows}
+      caseCount={caseCount}
+      revision="v0.1.1"
+      isCurrent={isCurrent}
+    />,
   )
 }
 
@@ -46,11 +52,20 @@ describe('LeaderboardTable', () => {
 
     expect(screen.getByRole('link', { name: 'PDF Redaction' })).toHaveAttribute(
       'href',
-      '/benchmarks/pdf/tools/pdf-redaction?revision=v0.1.1',
+      '/benchmarks/pdf/tools/pdf-redaction',
     )
     expect(screen.getByText('Hidden Tool').closest('a')).toBeNull()
   })
 
+  it('names a superseded revision in the report link, since that is another page', () => {
+    render([makeRow()], 4, false)
+
+    expect(screen.getByRole('link', { name: 'PDF Redaction' })).toHaveAttribute(
+      'href',
+      '/benchmarks/pdf/tools/pdf-redaction?revision=v0.1.1',
+    )
+  })
+
   it('links the logo wherever the name links, and nowhere for a tool with no page', () => {
     render([
       makeRow(),
@@ -65,7 +80,7 @@ describe('LeaderboardTable', () => {
         .querySelector('img, [data-testid="tool-monogram"]')!
     expect(logo('pdf-redaction').closest('a')).toHaveAttribute(
       'href',
-      '/benchmarks/pdf/tools/pdf-redaction?revision=v0.1.1',
+      '/benchmarks/pdf/tools/pdf-redaction',
     )
     expect(logo('hidden-tool').closest('a')).toBeNull()
   })
diff --git a/frontend/src/features/benchmarks/leaderboard-table.tsx b/frontend/src/features/benchmarks/leaderboard-table.tsx
index 65a1463..0cedd40 100644
--- a/frontend/src/features/benchmarks/leaderboard-table.tsx
+++ b/frontend/src/features/benchmarks/leaderboard-table.tsx
@@ -13,6 +13,7 @@ import {
 import { ToolLogo } from '@/features/catalog/tool-logo'
 import type { LeaderboardRowOut } from '@/lib/api/generated/model'
 import { formatPercent, roleLabel, surfaceLabel } from '@/lib/benchmarks/format'
+import { benchmarkHref } from '@/lib/benchmarks/params'
 
 import { ProvenanceBadge } from './provenance-badge'
 import { RateCell } from './rate-cell'
@@ -24,15 +25,18 @@ import { RateCell } from './rate-cell'
 export function LeaderboardTable({
   suite,
   revision,
+  isCurrent,
   rows,
   caseCount,
 }: {
   suite: string
   revision: string
+  isCurrent: boolean
   rows: LeaderboardRowOut[]
   caseCount: number
 }) {
-  const reportHref = (slug: string) => `/benchmarks/${suite}/tools/${slug}?revision=${revision}`
+  const reportHref = (slug: string) =>
+    benchmarkHref(`/benchmarks/${suite}/tools/${slug}`, { revision, isCurrent })
 
   if (rows.length === 0) {
     return (
diff --git a/frontend/src/features/benchmarks/run-and-case-views.test.tsx b/frontend/src/features/benchmarks/run-and-case-views.test.tsx
index 5ffb4f4..e1bc7b4 100644
--- a/frontend/src/features/benchmarks/run-and-case-views.test.tsx
+++ b/frontend/src/features/benchmarks/run-and-case-views.test.tsx
@@ -46,6 +46,32 @@ function renderRun(run = makeRunDetail(), { staff = false } = {}) {
 }
 
 describe('RunReportView', () => {
+  it('links the leaderboard, the tool report and the case by their plain URLs', () => {
+    renderRun()
+
+    expect(screen.getByRole('link', { name: /pdf benchmark v0\.1\.1/i })).toHaveAttribute(
+      'href',
+      '/benchmarks/pdf',
+    )
+    expect(screen.getByRole('link', { name: 'PDF Redaction' })).toHaveAttribute(
+      'href',
+      '/benchmarks/pdf/tools/pdf-redaction',
+    )
+    expect(screen.getByRole('link', { name: /the case, and every tool/i })).toHaveAttribute(
+      'href',
+      '/benchmarks/pdf/cases/extraction-conditions-1',
+    )
+  })
+
+  it('names a superseded revision in every link it makes', () => {
+    renderRun(makeRunDetail({ revision_is_current: false }))
+
+    expect(screen.getByRole('link', { name: /the case, and every tool/i })).toHaveAttribute(
+      'href',
+      '/benchmarks/pdf/cases/extraction-conditions-1?revision=v0.1.1',
+    )
+  })
+
   it('leads with the run and who published it', () => {
     renderRun()
 
@@ -146,6 +172,15 @@ describe('CaseView', () => {
     )
   }
 
+  it('links back to the leaderboard by its plain URL when the revision is current', () => {
+    renderCase()
+
+    expect(screen.getByRole('link', { name: /pdf benchmark v0\.1\.1/i })).toHaveAttribute(
+      'href',
+      '/benchmarks/pdf',
+    )
+  })
+
   it('offers the case PDF and says what is in it, without the values', () => {
     renderCase()
 
diff --git a/frontend/src/features/benchmarks/run-report-view.tsx b/frontend/src/features/benchmarks/run-report-view.tsx
index 2dad264..7510b9e 100644
--- a/frontend/src/features/benchmarks/run-report-view.tsx
+++ b/frontend/src/features/benchmarks/run-report-view.tsx
@@ -11,6 +11,7 @@ import {
 } from '@/lib/api/generated/benchmarks/benchmarks'
 import type { PooledOut, RateOut } from '@/lib/api/generated/model'
 import { roleLabel, surfaceLabel } from '@/lib/benchmarks/format'
+import { benchmarkHref } from '@/lib/benchmarks/params'
 
 import { useQueryClient } from '@tanstack/react-query'
 
@@ -35,6 +36,7 @@ export function RunReportView({ suite, runId }: { suite: string; runId: string }
   if (!run) return <Skeleton className="h-64 w-full" />
 
   const report = run.report as Report
+  const at = { revision: run.revision, isCurrent: run.revision_is_current }
   const gates = report.survivability?.gates ?? []
   // One run's report reads like a pooled one of one: the same sections, n of one case.
   const summary: PooledOut = {
@@ -65,14 +67,14 @@ export function RunReportView({ suite, runId }: { suite: string; runId: string }
     <div className="space-y-10">
       <header className="space-y-3">
         <p className="text-muted-foreground text-sm">
-          <Link href={`/benchmarks/${suite}?revision=${run.revision}`} className="hover:underline">
+          <Link href={benchmarkHref(`/benchmarks/${suite}`, at)} className="hover:underline">
             {suite.toUpperCase()} benchmark {run.revision}
           </Link>
           {run.tool.listable ? (
             <>
               {' / '}
               <Link
-                href={`/benchmarks/${suite}/tools/${run.tool.slug}?revision=${run.revision}`}
+                href={benchmarkHref(`/benchmarks/${suite}/tools/${run.tool.slug}`, at)}
                 className="hover:underline"
               >
                 {run.tool.name}
@@ -132,7 +134,7 @@ export function RunReportView({ suite, runId }: { suite: string; runId: string }
               </a>
             ) : null}
             <Link
-              href={`/benchmarks/${suite}/cases/${run.case_id}?revision=${run.revision}`}
+              href={benchmarkHref(`/benchmarks/${suite}/cases/${run.case_id}`, at)}
               className="hover:underline"
             >
               The case, and every tool on it
diff --git a/frontend/src/features/benchmarks/tool-report-view.test.tsx b/frontend/src/features/benchmarks/tool-report-view.test.tsx
index dbba154..6ddd025 100644
--- a/frontend/src/features/benchmarks/tool-report-view.test.tsx
+++ b/frontend/src/features/benchmarks/tool-report-view.test.tsx
@@ -23,6 +23,24 @@ function render(report: ToolReportOut = makeToolReport()) {
 }
 
 describe('ToolReportView', () => {
+  it('links back to the leaderboard by its plain URL when the revision is current', () => {
+    render()
+
+    expect(screen.getByRole('link', { name: /pdf benchmark v0\.1\.1/i })).toHaveAttribute(
+      'href',
+      '/benchmarks/pdf',
+    )
+  })
+
+  it('names a superseded revision in the way back', () => {
+    render(makeToolReport({ revision_is_current: false }))
+
+    expect(screen.getByRole('link', { name: /pdf benchmark v0\.1\.1/i })).toHaveAttribute(
+      'href',
+      '/benchmarks/pdf?revision=v0.1.1',
+    )
+  })
+
   it('leads with the pooled verdict, its interval and its sample size', () => {
     render()
 
diff --git a/frontend/src/features/benchmarks/tool-report-view.tsx b/frontend/src/features/benchmarks/tool-report-view.tsx
index 12fe33c..6ef9c23 100644
--- a/frontend/src/features/benchmarks/tool-report-view.tsx
+++ b/frontend/src/features/benchmarks/tool-report-view.tsx
@@ -7,6 +7,7 @@ import { ToolLogo } from '@/features/catalog/tool-logo'
 import { useGetBenchmarkToolReport } from '@/lib/api/generated/benchmarks/benchmarks'
 import type { GetBenchmarkToolReportParams } from '@/lib/api/generated/model'
 import { surfaceLabel } from '@/lib/benchmarks/format'
+import { benchmarkHref } from '@/lib/benchmarks/params'
 
 import { type Breakdowns, ReportBreakdowns, ReportHero } from './report-sections'
 import { RunCards } from './run-cards'
@@ -28,7 +29,13 @@ export function ToolReportView({
     <div className="space-y-10">
       <header className="space-y-3">
         <p className="text-muted-foreground text-sm">
-          <Link href={`/benchmarks/${suite}?revision=${data.revision}`} className="hover:underline">
+          <Link
+            href={benchmarkHref(`/benchmarks/${suite}`, {
+              revision: data.revision,
+              isCurrent: data.revision_is_current,
+            })}
+            className="hover:underline"
+          >
             {suite.toUpperCase()} benchmark {data.revision}
           </Link>
         </p>
diff --git a/frontend/src/lib/api/generated/model/caseDetailOut.ts b/frontend/src/lib/api/generated/model/caseDetailOut.ts
index e9ed7b8..97048c5 100644
--- a/frontend/src/lib/api/generated/model/caseDetailOut.ts
+++ b/frontend/src/lib/api/generated/model/caseDetailOut.ts
@@ -18,5 +18,6 @@ export interface CaseDetailOut {
   pdf_url: string;
   preview: PreviewOut | null;
   revision: string;
+  revision_is_current: boolean;
   runs: RunOut[];
 }
diff --git a/frontend/src/lib/api/generated/model/runDetailOut.ts b/frontend/src/lib/api/generated/model/runDetailOut.ts
index d01b891..4e44a81 100644
--- a/frontend/src/lib/api/generated/model/runDetailOut.ts
+++ b/frontend/src/lib/api/generated/model/runDetailOut.ts
@@ -45,4 +45,5 @@ export interface RunDetailOut {
   tier: string;
   notes: string;
   revision: string;
+  revision_is_current: boolean;
 }
diff --git a/frontend/src/lib/api/generated/model/toolReportOut.ts b/frontend/src/lib/api/generated/model/toolReportOut.ts
index 440e2bc..38ded62 100644
--- a/frontend/src/lib/api/generated/model/toolReportOut.ts
+++ b/frontend/src/lib/api/generated/model/toolReportOut.ts
@@ -13,6 +13,7 @@ export interface ToolReportOut {
   tool: ToolRefOut;
   suite: string;
   revision: string;
+  revision_is_current: boolean;
   scope: ToolReportOutScope;
   case_count: number;
   surfaces: ToolSurfaceOut[];
diff --git a/frontend/src/lib/benchmarks/params.test.ts b/frontend/src/lib/benchmarks/params.test.ts
index 90e2c17..9a9530e 100644
--- a/frontend/src/lib/benchmarks/params.test.ts
+++ b/frontend/src/lib/benchmarks/params.test.ts
@@ -1,6 +1,6 @@
 import { describe, expect, it } from 'vitest'
 
-import { parseBenchmarkParams } from './params'
+import { benchmarkHref, isAlternateView, parseBenchmarkParams } from './params'
 
 describe('parseBenchmarkParams', () => {
   it('defaults to the current revision and every result', () => {
@@ -21,3 +21,44 @@ describe('parseBenchmarkParams', () => {
     })
   })
 })
+
+describe('benchmarkHref', () => {
+  // `?revision=<current>` is the clean page under a second, noindexed URL. Linking
+  // it sent crawlers to the copy and left the canonical page unlinked.
+  it('leaves the current revision out of the URL', () => {
+    expect(
+      benchmarkHref('/benchmarks/pdf/tools/kept', { revision: 'v0.1.1', isCurrent: true }),
+    ).toBe('/benchmarks/pdf/tools/kept')
+  })
+
+  it('names a superseded revision, which is a different page', () => {
+    expect(
+      benchmarkHref('/benchmarks/pdf/tools/kept', { revision: 'v0.1.0', isCurrent: false }),
+    ).toBe('/benchmarks/pdf/tools/kept?revision=v0.1.0')
+  })
+
+  it('adds the verified scope after the revision', () => {
+    expect(
+      benchmarkHref('/benchmarks/pdf', { revision: 'v0.1.1', isCurrent: true, scope: 'verified' }),
+    ).toBe('/benchmarks/pdf?scope=verified')
+    expect(
+      benchmarkHref('/benchmarks/pdf', { revision: 'v0.1.0', isCurrent: false, scope: 'verified' }),
+    ).toBe('/benchmarks/pdf?revision=v0.1.0&scope=verified')
+  })
+})
+
+describe('isAlternateView', () => {
+  it('treats the plain page as the one to index', () => {
+    expect(isAlternateView({ scope: 'all' }, true)).toBe(false)
+  })
+
+  // Old links and shares still carry it; the canonical folds it into the plain page.
+  it('does not treat the current revision named in the URL as another view', () => {
+    expect(isAlternateView({ revision: 'v0.1.1', scope: 'all' }, true)).toBe(false)
+  })
+
+  it('treats a superseded revision and the verified-only view as other views', () => {
+    expect(isAlternateView({ revision: 'v0.1.0', scope: 'all' }, false)).toBe(true)
+    expect(isAlternateView({ scope: 'verified' }, true)).toBe(true)
+  })
+})
diff --git a/frontend/src/lib/benchmarks/params.ts b/frontend/src/lib/benchmarks/params.ts
index 50e7876..547cbed 100644
--- a/frontend/src/lib/benchmarks/params.ts
+++ b/frontend/src/lib/benchmarks/params.ts
@@ -16,3 +16,34 @@ export function parseBenchmarkParams(searchParams: SearchParams): BenchmarkParam
   const scope = first(searchParams.scope) === 'verified' ? 'verified' : 'all'
   return revision ? { revision, scope } : { scope }
 }
+
+/**
+ * A link to a benchmark page that names its revision only when it has to.
+ *
+ * Every page without `?revision=` already shows the current revision, and a page
+ * that names one is noindexed as a slice of it. So linking the current revision by
+ * name sends crawlers to the noindexed copy and leaves the canonical page unlinked.
+ */
+export function benchmarkHref(
+  path: string,
+  {
+    revision,
+    isCurrent,
+    scope = 'all',
+  }: { revision: string; isCurrent: boolean; scope?: BenchmarkParams['scope'] },
+): string {
+  const query = new URLSearchParams()
+  if (!isCurrent) query.set('revision', revision)
+  if (scope === 'verified') query.set('scope', scope)
+  const search = query.toString()
+  return search ? `${path}?${search}` : path
+}
+
+/**
+ * Whether a page is a slice of its canonical one, and so followed but not indexed:
+ * a superseded revision, or the verified-only view. Naming the current revision is
+ * not a slice - it is the same page, and the canonical says so.
+ */
+export function isAlternateView(params: BenchmarkParams, revisionIsCurrent: boolean): boolean {
+  return (Boolean(params.revision) && !revisionIsCurrent) || params.scope !== 'all'
+}