GLM-5.1

ai model→ stable

GLM-5.1 series

GLM-5.1, developed by Zhipu AI, is a next-generation foundation model featuring a 1 million token context window and support for 128K output tokens.

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+0.50Sentiment (Positive)

0.0%Velocity (7d)

First seen: Mar 21, 2026Last active: Mar 21, 2026

Timeline

1

Research MilestoneMar 21, 2026
Extended context window to 1 million tokens, placing it among models with longest current context capabilities
View source
context window:
1 million tokens
output tokens:
128K

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Competes With

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GPT-4o
ai model1 source Compare80% conf.
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Claude 3.5 Sonnet
ai model1 source Compare80% conf.
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Gemini 3.0 Pro
ai model1 source Compare80% conf.

Developed

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Zhipu AI
company1 source100% conf.

Recent Articles

1

Zhipu AI Announces GLM-5.1 Series, Featuring 1M Context and 128K Output Tokens
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Zhipu AI has announced the GLM-5.1 model series, featuring a 1 million token context window and support for 128K output tokens. The update includes mu
Mar 21, 202685 relevance

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