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

Devstral Small vs o1

Mistral
Devstral Small
OpenAI
o1
Overview
CompanyMistralOpenAI
Release dateMay 21 2025Dec 5 2024
AccessOpen WeightProprietary
Specifications
Parameters
24B
Timeline
Release gapo1 shipped 167 days before Devstral Small

Which is better: Devstral Small or o1?

Devstral Small and o1 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. o1 shipped 167 days before Devstral Small, so benchmark comparisons should account for the intervening progress.

Devstral Small is open weight, while o1 is proprietary.

Direct benchmark comparisons are unavailable — Devstral Small and o1 don't publish scores on any of the same benchmarks.

Frequently asked questions

Devstral Small was released by Mistral on May 21 2025.

o1 was released by OpenAI on Dec 5 2024.

Devstral Small is an open weight model released by Mistral. o1 is a proprietary model released by OpenAI.

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