o4 Mini vs Kimi K2
o4 Mini offers 200K tokens context vs 131K tokens, Kimi K2 is more cost-effective, o4 Mini includes advanced reasoning. Compare full specs, pricing, and choose the best model for your use case.
Quick Overview
Detailed Comparison
Specification
o4 Mini
Kimi K2
Provider
OpenRouter
OpenRouter
Context Window
200K tokens
131K tokens
Max Output Tokens
100K tokens
33K tokens
Input Pricing (per 1M tokens)
$1.10
$0.55
Output Pricing (per 1M tokens)
$4.40
$2.20
Release Date
Apr 2025
Jul 2025
Capabilities
Capability
o4 Mini
Kimi K2
Text Generation
Vision
Function Calling
Advanced Reasoning
File Attachments
Which Model Should You Choose?
Choose o4 Mini if:
- • You need a larger context window
- • You need advanced reasoning
Choose Kimi K2 if:
- • Cost efficiency is a priority
- • You prefer open weights