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Claude Opus 4.5 vs Ministral 8B

2 vs 0 benchmarks won

Anthropic
Claude Opus 4.5
Mistral
Ministral 8B
Overview
CompanyAnthropicMistral
Release dateNov 24 2025Oct 2024
Model type
Open sourceNoYes
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
87%
Software engineering
SWE-Bench Verified
80.9%
Multimodal understanding
MMMU
Timeline
Release gapMinistral 8B shipped 419 days before Claude Opus 4.5

Which is better: Claude Opus 4.5 or Ministral 8B?

Claude Opus 4.5 leads Ministral 8B on 2 of the tracked benchmarks (GPQA Diamond, SWE-Bench Verified, MMMU). Ministral 8B shipped 419 days before Claude Opus 4.5, so benchmark comparisons should account for the intervening progress.

Ministral 8B is an open-source / open-weight model; Claude Opus 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 Opus 4.5 released?
Claude Opus 4.5 was released by Anthropic on Nov 24 2025.
When was Ministral 8B released?
Ministral 8B was released by Mistral on Oct 2024.
Is Claude Opus 4.5 or Ministral 8B open source?
Ministral 8B is an open-source / open-weight model released by Mistral. Claude Opus 4.5 is a proprietary model released by Anthropic.

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