GLM-5.3 vs GLM-5.3-Flash vs GLM-5.2

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

Z.ai
GLM-5.3GA
8.7
AI Panel
Z.ai
GLM-5.3-FlashGA
8.6
AI Panel
Z.ai
GLM-5.2GA
8.8
AI Panel

Identity & lifecycle

ProviderZ.aiZ.aiZ.ai
Family / tierGLM-5 · FlagshipGLM-5 · FlashGLM-5 · Flagship
StatusGAGAGA
Released2026-08-142026-08-262026-06-16
Knowledge cutoff———

Architecture & context

Context window1M1M1M
Max output tokens131K131K131K
Input modalitiestexttext, image, videotext
Reasoning modealwaysalwaysoptional
Open weightsYesYesYes

Pricing (per Mtok)

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

Speed

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

Trust & deployment

Trains on inputsNoNo—
Licensecustom-GLM-5.3-LicenseMITMIT
CloudsMistral AI, Alibaba Cloud Model Studio——
Compliance———

AI Panel scoring

Unified score8.78.68.8
Decision Maker8.58.58.5
Domain Strategist999
Finance Lead9.59.59.5
Domain Practitioner999
Power User8.58.58.5
Skeptic7.578
Value score9.69.89.6

Benchmarks

GPQA Diamond——91.2
Terminal-Bench88.284.381
Humanity's Last Exam——40.5
LMArena Elo148314751472
LMArena Coding Elo152415251510

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