GLM 5.3 Prime

Name: GLM 5.3 Prime model facts
Creator: OSMEXO

z-ai/glm-5.3-prime

Z.ai
Family · GLM 5 Prime
Text → Text
Reasoning · adjustable
Tools

Not on OSMEXO yet

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Spec & list price

Context1M

Max output128K

Input / 1M$2.80

Output / 1M$8.803.1× input

Usage

Tokens / day3.5B▼ 22% 7d

Usage rank#137

Requests / day41.0K

Tool calls / req0.58

Per request · 30 days

Avg input83.6K5.6× median

Avg output1.0K1.5× median

Cache hit95%1.4× median

Reasoning share73%1.3× median

Tool-call failures1.6%0.9× median

Consumption

Peak 18.9B 7 OctLow 3.5B 1 NovRank today #137

News & trends

Trending · 14 days

News · latest from Z.ai

Hermes and REA and GLM 5.3 = Reverse engineering TikTok app for less than $20scraping.club · 29 Oct
GLM-5.3 Sometimes Considers How Train-Time Actions Shape Future Behaviorlesswrong.com · 27 Oct
Cross-request KV cache exposure in the GLM-5.3 Workers AI model (155 responses)blog.cloudflare.com · 26 Oct
ReplaySSM: Rethinking State Storage for Faster Hybrid-Model DecodingNVIDIA · 12 Oct

Speed

Output speed#60/334101 tok/s1.6× faster than median

First token#1290.82 s1.3× quicker than median

Technical details

Reasoning: on · max
Tokenizer: Other
Moderation: none

Reasoning effort

max · default
high
low

Request parameters 16

tools
tool_choice
response_format
reasoning
reasoning_effort
include_reasoning
temperature
top_p
top_k
max_tokens

+6 more

stop
seed
frequency_penalty
logprobs
presence_penalty
top_logprobs

When to use

Best for

Very long context tool-calling agents
Reasoning with adjustable effort
Large document and code analysis

Think twice for

Image input
Structured-output pipelines
Cheapest high-volume chat

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