GLM-5.1

Name: GLM-5.1
Author: Zhipu AI

Zhipu AI

GLM-5.1 is a 754B-parameter open-weight MoE model from Zhipu AI (Z.ai) released in April 2026. It offers strong math and reasoning performance with a 200K token context window. Weights are available on Hugging Face under the MIT license.

Key Specifications

Parameters

754.0B

Context

200.0K

Release Date

April 7, 2026

Average Score

91.7%

API Documentation Research Paper Results Blog

Timeline

Key dates in the model's history

Announcement

April 7, 2026

Last Update

August 27, 2026

Technical Specifications

Parameters

754.0B

Training Tokens

Knowledge Cutoff

Family

Capabilities

MultimodalZeroEval

Pricing & Availability

Input (per 1M tokens)

$1.40

Output (per 1M tokens)

$4.40

Max Input Tokens

200.0K

Max Output Tokens

131.1K

Supported Features

Function CallingStructured OutputCode ExecutionWeb SearchBatch InferenceFine-tuning

Benchmark Results

Model performance metrics across various tests and benchmarks

Reasoning

Logical reasoning and analysis

GPQA

GPQA Diamond • Self-reported

86.0%

Other Tests

Specialized benchmarks

AIME 2026

Self-reported by the model provider • Self-reported

95.0%

HMMT 2025

Self-reported by the model provider • Self-reported

94.0%

License & Metadata

License

mit

Announcement Date

April 7, 2026

Last Updated

August 27, 2026

Compare GLM-5.1

All comparisons

vs GLM-5.2 vs GLM-5.3 vs Qwen3 VL 4B Thinking vs MiniMax M3 vs Qwen3-235B-A22B-Thinking-2507 vs Kimi K2-Thinking-0905 vs Kimi K2.5 vs Seed 2.0 Pro

Similar Models

All Models

GLM-5.2

Zhipu AI

753.0B

Best score:0.9 (GPQA)

Released:Jun 2026

Price:$1.40/1M tokens

GLM-4.5

Zhipu AI

355.0B

Best score:0.8 (GPQA)

Released:Jul 2025

Price:$0.60/1M tokens

GLM-5

Zhipu AI

744.0B

Best score:0.9 (TAU)

Released:Feb 2026

GLM-4.7

Zhipu AI

358.0B

Best score:0.9 (TAU)

Released:Dec 2025

Price:$0.60/1M tokens

GLM-5.3

Zhipu AI

753.0B

Released:Aug 2026

Price:$1.40/1M tokens

GLM-4.5-Air

Zhipu AI

106.0B

Best score:0.8 (TAU)

Released:Jul 2025

GLM-4.7-Flash

Zhipu AI

30.0B

Best score:0.8 (TAU)

Released:Jan 2026

Price:$0.07/1M tokens

GLM-4.6

Zhipu AI

MM357.0B

Best score:0.8 (GPQA)

Released:Sep 2025

Price:$0.60/1M tokens

Recommendations are based on similarity of characteristics: developer organization, multimodality, parameter size, and benchmark performance. Choose a model to compare or go to the full catalog to browse all available AI models.