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Language modelOpen source

GLM-5.1

Z.ai

Released
April 7, 2026
Data date
July 30, 2026

Category view

Position within the category

This overview uses only published data from matching cohorts. Missing values never change a rank.

The index averages rank percentiles from 4 documented comparison cohorts. Only models with complete coverage receive a position.

Position
Rank 23 of 26
Index score
15.4 / 100
Coverage
4 / 4

Leaderboard

1Claude Opus 588.9 / 100
2Gemini 3.8 Flash88.5 / 100
3Claude Fable 583.2 / 100
22Gemini 3.5 Flash-Lite16.8 / 100
23GLM-5.1, Current model15.4 / 100
24MiMo-V2.513.5 / 100
25MiMo-V2.5-Pro12.5 / 100
Source: Vals AI, GPQA DiamondSource: Vals AI, Vibe Code Bench v1.1Source: Vals AI, Terminal-Bench 2.1Source: Vals AI, Finance Agent (v2)

Profile

Specifications and access

Published information about this model. Unknown values are not estimated.

Model type
Open weightsSource
Parameters
744BSource
Active parameters
40BSource
Context window
200,000 tokensSource
Notes
MIT-licensed model with 744B total parameters, 40B active, and a 200K context window.Source

Pricing

Published prices

Prices remain tied to their documented unit and source.

API input
$1.4 per 1M tokensSource
API output
$4.4 per 1M tokensSource
Cache read
$0.26 per 1M tokensSource

Head-to-head comparisons

Compare this model

Each matchup compares this model with exactly one other model from the same category.

GLM-5.1 vs. Claude Fable 5.1
GLM-5.1 vs. Claude Mythos 5.1
GLM-5.1 vs. Claude Opus 5
GLM-5.1 vs. Claude Fable 5
GLM-5.1 vs. Claude Sonnet 5
GLM-5.1 vs. Claude Mythos 5
GLM-5.1 vs. GPT-6 Astra
GLM-5.1 vs. GPT-5.6 Sol
GLM-5.1 vs. GPT-5.6 Terra
GLM-5.1 vs. GPT-5.6 Luna
GLM-5.1 vs. GPT-5.5
GLM-5.1 vs. GPT-5.4
GLM-5.1 vs. GPT-5.4 mini
GLM-5.1 vs. Gemini 3.8 Flash
GLM-5.1 vs. Gemini 3.7 Flash
GLM-5.1 vs. Gemini 3.6 Flash
GLM-5.1 vs. Gemini 3.5 Flash
GLM-5.1 vs. Gemini 3.1 Pro Preview
GLM-5.1 vs. Gemini 3.5 Flash-Lite
GLM-5.1 vs. Muse Spark 1.3
GLM-5.1 vs. Grok 4.6
GLM-5.1 vs. Grok 4.5
GLM-5.1 vs. Grok 4.3
GLM-5.1 vs. DeepSeek-V4-Pro
GLM-5.1 vs. DeepSeek-V4-Flash
GLM-5.1 vs. Kimi K3
GLM-5.1 vs. Kimi K2.6
GLM-5.1 vs. GLM-5.3-Flash
GLM-5.1 vs. GLM-5.3
GLM-5.1 vs. GLM-5.2
GLM-5.1 vs. Qwen 3.8 Max 0902
GLM-5.1 vs. Mistral Large 3
GLM-5.1 vs. Mistral Medium 3.5
GLM-5.1 vs. MiMo-V2.5
GLM-5.1 vs. MiMo-V2.5-Pro

More models

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GLM-5.2

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Qwen 3.8 Max 0902

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Evidence

Primary sources and data date

Every statement links to its underlying documentation or leaderboard.