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

Home/Compare/Claude Sonnet 4.5 vs Mathstral 7B

Claude Sonnet 4.5 vs Mathstral 7B

3 vs 0 benchmarks won

Anthropic
Claude Sonnet 4.5
Mistral
Mathstral 7B
Overview
CompanyAnthropicMistral
Release dateSep 29 2025Jul 16 2024
Model type
Open sourceNoYes
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
83.4%
Software engineering
SWE-Bench Verified
77.2%
Multimodal understanding
MMMU
68%
Timeline
Release gapMathstral 7B shipped 440 days before Claude Sonnet 4.5

Which is better: Claude Sonnet 4.5 or Mathstral 7B?

Claude Sonnet 4.5 leads Mathstral 7B on 3 of the tracked benchmarks (GPQA Diamond, SWE-Bench Verified, MMMU). Mathstral 7B shipped 440 days before Claude Sonnet 4.5, so benchmark comparisons should account for the intervening progress.

Mathstral 7B is an open-source / open-weight model; Claude Sonnet 4.5 is proprietary.

Direct benchmark comparisons are unavailable — at least one of these models has not published scores on GPQA Diamond, SWE-Bench Verified, or MMMU.

Frequently asked questions

When was Claude Sonnet 4.5 released?
Claude Sonnet 4.5 was released by Anthropic on Sep 29 2025.
When was Mathstral 7B released?
Mathstral 7B was released by Mistral on Jul 16 2024.
Is Claude Sonnet 4.5 or Mathstral 7B open source?
Mathstral 7B is an open-source / open-weight model released by Mistral. Claude Sonnet 4.5 is a proprietary model released by Anthropic.

Other comparisons