Cracked AI Engineering

Mistral Medium 3.1 vs Kimi K2

Mistral Medium 3.1 offers 262K tokens context vs 131K tokens, Mistral Medium 3.1 supports vision, Kimi K2 has open weights. Compare full specs, pricing, and choose the best model for your use case.

Quick Overview

Mistral Medium 3.1

OpenRouter

262K tokens context • $0.40 / $2.00 per 1M tokens

View full specifications →

Kimi K2

OpenRouter

131K tokens context • $0.55 / $2.20 per 1M tokens

View full specifications →

Detailed Comparison

Specification
Mistral Medium 3.1
Kimi K2
Provider
OpenRouter
OpenRouter
Context Window
262K tokens
131K tokens
Max Output Tokens
262K tokens
33K tokens
Input Pricing (per 1M tokens)
$0.40
$0.55
Output Pricing (per 1M tokens)
$2.00
$2.20
Release Date
Aug 2025
Jul 2025

Capabilities

Capability
Mistral Medium 3.1
Kimi K2
Text Generation
Vision
Function Calling
File Attachments

Which Model Should You Choose?

Choose Mistral Medium 3.1 if:

  • • You need a larger context window
  • • Cost efficiency is a priority

Choose Kimi K2 if:

  • • You prefer open weights