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

Devstral Small 2 (24B) vs Grok 4.20 Beta

Mistral
Devstral Small 2 (24B)
xAI
Grok 4.20 Beta
Overview
CompanyMistralxAI
Release dateDec 9 2025Feb 17 2026
Model type
Open sourceYesNo
Specifications
Parameters
Context window
Benchmarks
Timeline
Release gapDevstral Small 2 (24B) shipped 70 days before Grok 4.20 Beta

Which is better: Devstral Small 2 (24B) or Grok 4.20 Beta?

Devstral Small 2 (24B) and Grok 4.20 Beta don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Devstral Small 2 (24B) shipped 70 days before Grok 4.20 Beta, so benchmark comparisons should account for the intervening progress.

Devstral Small 2 (24B) is an open-source / open-weight model; Grok 4.20 Beta is proprietary.

Direct benchmark comparisons are unavailable — Devstral Small 2 (24B) and Grok 4.20 Beta don't publish scores on any of the same benchmarks.

Frequently asked questions

When was Devstral Small 2 (24B) released?
Devstral Small 2 (24B) was released by Mistral on Dec 9 2025.
When was Grok 4.20 Beta released?
Grok 4.20 Beta was released by xAI on Feb 17 2026.
Is Devstral Small 2 (24B) or Grok 4.20 Beta open source?
Devstral Small 2 (24B) is an open-source / open-weight model released by Mistral. Grok 4.20 Beta is a proprietary model released by xAI.

Other comparisons