#15
GLM 5.3
glm-5.3
0.0
Helpfulness
Instruction Following
Comprehension
Empathy
Creative Writing
Helpfulness
0.0
Instruction Following
0.0
Comprehension
0.0
Empathy
0.0
Creative Writing
0.0
Speed
Avg 56 tok/s
Release Date
August 14, 2026
Lab
Zhipu AI
Type
Open Source
Context Size
1.0M
Max Output Tokens
128K
Cost per 1 million tokens
$1.40 / $4.40
Model Inputs*
Text
Model Outputs*
Text
Tool Calling*
Enabled
Overall Assistant Score
An average score combining the 5 main categories.
91.40 pts
Rank #15
86th Percentile
0
Novice
33
Capable
66
Proficient
100
Expert
GLM 5.3 is Z.ai's August 2026 open flagship—same 743B GLM-5.2 base, with all gains from scaled post-training for coding agents, long-horizon work, and tool follow-through. Our assistant tests put it ahead of 5.2 on helpfulness, instruction following, and comprehension for messy multi-step help that has to finish. Empathy stays cool and professional. Creative writing is still utilitarian: clearer diffs than stories, so Fable and GPT-4.5 remain the prose picks. Best open model when you want an agent that keeps going; not the warmest chat partner. Same $1.40/$4.40 API rate as 5.2.

Overall Score vs Price

Price axis is logarithmic (USD per 1M input tokens) · Higher score and lower price is better

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Zhipu AI

Intelligence

Overall Score · Higher is better

Speed

Output tokens per second · Higher is better

Price

USD per 1M input tokens · Lower is better

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