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Z.ai Releases GLM-5.1 Open-Source Model

by Z.ai

Z.ai released GLM-5.1, a 754B-parameter MoE model under MIT license that outperforms GPT-5.4 and Opus 4.6 on SWE-Bench Pro.

Product Launch

Launched: Apr 7, 2026 ·

Introduction Company Sources

Product Details

Date: Apr 7, 2026
Product: GLM-5.1
Target Market: AI developers, open-source community
Organization: Z.ai

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Introduction

Z.ai released GLM-5.1 on April 7, 2026, a 754B-parameter Mixture-of-Experts model available under an MIT license. Z.ai claims it outperforms GPT-5.4 and Opus 4.6 on SWE-Bench Pro.

Company

Z.ai

Type

public

Location

Shanghai, China

Founded

2019

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