GLM-5.3
Flagship GLM model for long-horizon coding, agents, and complex project delivery
ECI STANDING#25 of 266
SCORE155.25153.18–157.53 CI
FRONTIER LAGLaunched 8.1 months behindScores about what GPT-5.2 Pro did in December 2025.
SCORES LIKE THESE MODELSDeepSeek V4 Pro 0813DeepSeek · Aug 2026155.47GPT-5.2 ProOpenAI · Dec 2025155.38Claude Opus 4.6Anthropic · Feb 2026155.34
Full Epoch Capabilities Index ranking ↗Qwen3.8 Max (0902)Alibaba · Sep 2026155.22
From the lab
Launch announcement · Aug 18, 2026GLM-5.3RELEASE DATEAug 14, 2026
WEIGHTSOpen weights
CONTEXT WINDOW1M
MAX OUTPUT131.1K
REASONINGYes
TOOL CALLINGYes
INPUTStext
OUTPUTStext
Specifications from Models.dev. Availability and limits may differ by provider. Benchmark scores come from Epoch AI under CC BY 4.0.