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

Mistral Medium vs Kimi K2 Thinking

Mistral
Mistral Medium
Moonshot AI
Kimi K2 Thinking
Overview
CompanyMistralMoonshot AI
Release dateDec 2023Nov 6 2025
AccessProprietaryOpen Weight
Specifications
Parameters
1T
Context window
256k
Benchmarks
Coding
SWE-Bench Verified
71.3%
Timeline
Release gapMistral Medium shipped 706 days before Kimi K2 Thinking

Which is better: Mistral Medium or Kimi K2 Thinking?

Mistral Medium and Kimi K2 Thinking don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Mistral Medium shipped 706 days before Kimi K2 Thinking, so benchmark comparisons should account for the intervening progress.

Mistral Medium is proprietary, while Kimi K2 Thinking is open weight.

Direct benchmark comparisons are unavailable — Mistral Medium and Kimi K2 Thinking don't publish scores on any of the same benchmarks.

Frequently asked questions

Mistral Medium was released by Mistral on Dec 2023.

Kimi K2 Thinking was released by Moonshot AI on Nov 6 2025.

Mistral Medium is a proprietary model released by Mistral. Kimi K2 Thinking is an open weight model released by Moonshot AI.

Other comparisons