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Gemini 1.5 Flash vs Devstral Small 2 (24B)

Google Gemini 1.5 Flash vs Mistral Devstral Small 2 (24B) — side-by-side specs.

Google
Gemini 1.5 Flash
Mistral
Devstral Small 2 (24B)
Overview
CompanyGoogleMistral
Release dateMay 14 2024Dec 9 2025
Model type
Open sourceNoYes
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
Software engineering
SWE-Bench Verified
Multimodal understanding
MMMU
Timeline
Release gapGemini 1.5 Flash shipped 574 days before Devstral Small 2 (24B)

Which is better: Gemini 1.5 Flash or Devstral Small 2 (24B)?

Gemini 1.5 Flash and Devstral Small 2 (24B) do not have directly comparable benchmark scores published on GPQA Diamond, SWE-Bench Verified, or MMMU. Gemini 1.5 Flash shipped 574 days before Devstral Small 2 (24B), so benchmark comparisons should account for the intervening progress.

Devstral Small 2 (24B) is an open-source / open-weight model; Gemini 1.5 Flash 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 Gemini 1.5 Flash released?
Gemini 1.5 Flash was released by Google on May 14 2024.
When was Devstral Small 2 (24B) released?
Devstral Small 2 (24B) was released by Mistral on Dec 9 2025.
Is Gemini 1.5 Flash or Devstral Small 2 (24B) open source?
Devstral Small 2 (24B) is an open-source / open-weight model released by Mistral. Gemini 1.5 Flash is a proprietary model released by Google.

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