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

Codestral Mamba 7B vs Grok 4.20 Beta

Mistral
Codestral Mamba 7B
xAI
Grok 4.20 Beta
Overview
CompanyMistralxAI
Release dateJul 16 2024Feb 17 2026
Model type
Open sourceYesNo
Specifications
Parameters
Context window
Benchmarks
Timeline
Release gapCodestral Mamba 7B shipped 581 days before Grok 4.20 Beta

Which is better: Codestral Mamba 7B or Grok 4.20 Beta?

Codestral Mamba 7B and Grok 4.20 Beta don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Codestral Mamba 7B shipped 581 days before Grok 4.20 Beta, so benchmark comparisons should account for the intervening progress.

Codestral Mamba 7B is an open-source / open-weight model; Grok 4.20 Beta is proprietary.

Direct benchmark comparisons are unavailable — Codestral Mamba 7B and Grok 4.20 Beta don't publish scores on any of the same benchmarks.

Frequently asked questions

When was Codestral Mamba 7B released?
Codestral Mamba 7B was released by Mistral on Jul 16 2024.
When was Grok 4.20 Beta released?
Grok 4.20 Beta was released by xAI on Feb 17 2026.
Is Codestral Mamba 7B or Grok 4.20 Beta open source?
Codestral Mamba 7B is an open-source / open-weight model released by Mistral. Grok 4.20 Beta is a proprietary model released by xAI.

Other comparisons