GLM-5.3-Flash vs GLM-5.2

Best cell per row highlighted. Null means undisclosed — never counted as zero.

Z.ai
GLM-5.3-FlashGA
8.6
AI Panel
Z.ai
GLM-5.2GA
8.8
AI Panel

Identity & lifecycle

ProviderZ.aiZ.ai
Family / tierGLM-5 · FlashGLM-5 · Flagship
StatusGAGA
Released2026-08-262026-06-16
Knowledge cutoff——

Architecture & context

Context window1M1M
Max output tokens131K131K
Input modalitiestext, image, videotext
Reasoning modealwaysoptional
Open weightsYesYes

Pricing (per Mtok)

Input$0.15$1.4
Output$0.5$4.4
Cached input$0.03$0.26
Batch input——
Free tierNoNo

Speed

Output speed (tok/s)—166.6
Time to first token (s)—1.39
Latency tiermediumfast

Trust & deployment

Trains on inputsNo—
LicenseMITMIT
Clouds——
Compliance——

AI Panel scoring

Unified score8.68.8
Decision Maker8.58.5
Domain Strategist99
Finance Lead9.59.5
Domain Practitioner99
Power User8.58.5
Skeptic78
Value score9.89.6

Benchmarks

GPQA Diamond—91.2
Terminal-Bench84.381
Humanity's Last Exam—40.5
LMArena Elo14751472
LMArena Coding Elo15251510

Scores link to their sources. Missing cells mean the vendor hasn't disclosed a result — honesty over padding.