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+# GLM-5.3-Flash on SadeedDiac-25 (2026-08-31)
+
+First measurement of glm-5.3-flash on this benchmark. Protocol: neutral
+completion prompt, temperature 0, max_tokens 8192, **reasoning_effort=low**
+(explicitly pinned — absent/unrecognized values default to MAX; the 5.2-era
+`thinking:{type:disabled}` knob is rejected by 5.3 with HTTP 400 code 1210
+and must not be combined with reasoning_effort). Reasoning content is
+present at effort=low (tripwire disclosed); checkpoint
+/tmp/sadeed_glm53_clean.jsonl, 1,200/1,200 non-empty.
+
+| Protocol | DER (CE) | 
+|---|---|
+| raw (their default output) | 8.5911 |
+| projected zero-skip | **8.8995** |
+
+Context: GLM-5.2 zero-skip scored 2.6911 (our reproduction, thinking
+disabled). The 5.3 flash tier regresses on this benchmark to below
+dedicated Sadeed-1.5B (7.2915) — supporting the dedicated-vs-frontier
+positioning: diacritization quality is not carried by general-frontier
+scale at the flash tier. Effort=high/max remains unmeasured (protocol
+prefers plain completion; a max-effort run would not be protocol-matched
+to the other rows).