Claude Opus 4.1 vs Kimi K2
Claude Opus 4.1 offers 200K tokens context vs 131K tokens, Kimi K2 is more cost-effective, Claude Opus 4.1 includes advanced reasoning. Compare full specs, pricing, and choose the best model for your use case.
Quick Overview
Claude Opus 4.1
OpenRouter
200K tokens context • $15.00 / $75.00 per 1M tokens
View full specifications →Detailed Comparison
Specification
Claude Opus 4.1
Kimi K2
Provider
OpenRouter
OpenRouter
Context Window
200K tokens
131K tokens
Max Output Tokens
32K tokens
33K tokens
Input Pricing (per 1M tokens)
$15.00
$0.55
Output Pricing (per 1M tokens)
$75.00
$2.20
Release Date
Aug 2025
Jul 2025
Capabilities
Capability
Claude Opus 4.1
Kimi K2
Text Generation
Vision
Function Calling
Advanced Reasoning
File Attachments
Which Model Should You Choose?
Choose Claude Opus 4.1 if:
- • You need a larger context window
- • You need advanced reasoning
Choose Kimi K2 if:
- • Cost efficiency is a priority
- • You prefer open weights