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

Codestral Mamba 7B vs gpt-oss-20b

Mistral
Codestral Mamba 7B
OpenAI
gpt-oss-20b
Overview
CompanyMistralOpenAI
Release dateJul 16 2024Aug 5 2025
AccessOpen WeightOpen Weight
Timeline
Release gapCodestral Mamba 7B shipped 385 days before gpt-oss-20b

Which is better: Codestral Mamba 7B or gpt-oss-20b?

Codestral Mamba 7B and gpt-oss-20b don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Codestral Mamba 7B shipped 385 days before gpt-oss-20b, so benchmark comparisons should account for the intervening progress.

Published specifications for these two models are limited — see each model page for the latest details.

Direct benchmark comparisons are unavailable — Codestral Mamba 7B and gpt-oss-20b don't publish scores on any of the same benchmarks.

Frequently asked questions

Codestral Mamba 7B was released by Mistral on Jul 16 2024.

gpt-oss-20b was released by OpenAI on Aug 5 2025.

Other comparisons