GLM 5.3
by Z.aitext->text48 endpoints
Neura Intelligence Index
95.3/ 100
Rank
#9—
Confidence
lowBenchmarks
2(5% coverage)
Overview
GLM-5.3 is a large-scale reasoning model from Z.ai, built for complex software engineering and long-horizon agent tasks. It supports text input and output with a 1M-token context window, and improves on GLM-5.2 in coding and in the balance between performance and token efficiency.
Reasoning is always on and cannot be disabled. Reasoning efforts low, high, and max are supported; max is the default.
Capabilities
Text generation
Tool use / Function calling
Structured output
Extended reasoning
Prompt caching
Long context
Top-P sampling
Stop sequences
Deterministic seed
Log probabilities
Modalities
Input
Text
Output
Text
Technical Specifications
Context Window
1.0M tokens
Max Output
943.7K tokens
Tokenizer
Other
Uptime (24h)
10000.0%
Parameters
753000000000B
License
glm_5_3Open Weights
Country
🇨🇳CN
Release Date
August 14, 20262mo
Supported Parameters
frequency_penaltyinclude_reasoninglogit_biaslogprobsmax_tokensmin_pparallel_tool_callspresence_penaltyreasoningreasoning_effortrepetition_penaltyresponse_formatseedstopstructured_outputstemperaturetool_choicetoolstop_ktop_logprobstop_p
Benchmark Performance
reasoning
| Benchmark | Score | Source |
|---|---|---|
| Humanity's Last Exam | 62.5 | verified |
agent
| Benchmark | Score | Source |
|---|---|---|
| Toolathlon | 73 | verified |
Performance Over Time
Pricing
Per 1M tokens
Input$0.07
Output$1.40
Cache read$0.07
Added
August 18, 2026
Last synced 11/7/2026