AI Model Release Tracker - Timeline of Major AI Models from 2022-2026

Mistral Medium 3.5 vs GLM-5.1

Mistral
Mistral Medium 3.5
Z.ai
GLM-5.1
Overview
CompanyMistralZ.ai
Release dateApr 29 2026Apr 7 2026
AccessOpen WeightOpen Weight
Specifications
Parameters
128B
744B
Context window
256k
200k
Benchmarks
Coding
SWE-Bench Verified
77.6%
Agentic terminal coding
Terminal-Bench 2.0
63.5%
Web browsing
BrowseComp
68%
Science
GPQA Diamond
86.2%
Timeline
Release gapGLM-5.1 shipped 22 days before Mistral Medium 3.5

Which is better: Mistral Medium 3.5 or GLM-5.1?

Mistral Medium 3.5 and GLM-5.1 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. GLM-5.1 shipped 22 days before Mistral Medium 3.5, so benchmark comparisons should account for the intervening progress.

Mistral Medium 3.5 has 128B parameters, while GLM-5.1 has 744B. Context windows are 256k (Mistral Medium 3.5) vs 200k (GLM-5.1).

Direct benchmark comparisons are unavailable — Mistral Medium 3.5 and GLM-5.1 don't publish scores on any of the same benchmarks.

Frequently asked questions

Mistral Medium 3.5 was released by Mistral on Apr 29 2026.

GLM-5.1 was released by Z.ai on Apr 7 2026.

Mistral Medium 3.5 has a 256k context window; GLM-5.1 has 200k.

Other comparisons