GLM-5.3-Flash vs GLM-5.3 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-5.3GA
8.7
AI Panel
Z.ai
GLM-5.2GA
8.8
AI Panel

Identity & lifecycle

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

Architecture & context

Context window1M1M1M
Max output tokens131K131K131K
Input modalitiestext, image, videotexttext
Reasoning modealwaysalwaysoptional
Open weightsYesYesYes

Pricing (per Mtok)

Input$0.15$1.4$1.4
Output$0.5$4.4$4.4
Cached input$0.03$0.26$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—
LicenseMITcustom-GLM-5.3-LicenseMIT
Clouds—Mistral AI, Alibaba Cloud Model Studio—
Compliance———

AI Panel scoring

Unified score8.68.78.8
Decision Maker8.58.58.5
Domain Strategist999
Finance Lead9.59.59.5
Domain Practitioner999
Power User8.58.58.5
Skeptic77.58
Value score9.89.69.6

Benchmarks

GPQA Diamond——91.2
Terminal-Bench84.388.281
Humanity's Last Exam——40.5
LMArena Elo147514831472
LMArena Coding Elo152515241510

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