R1 0528 (free) vs Kimi K2 Instruct 0905
Kimi K2 Instruct 0905 offers 262K tokens context vs 164K tokens, R1 0528 (free) is more cost-effective, R1 0528 (free) includes advanced reasoning. Compare full specs, pricing, and choose the best model for your use case.
Quick Overview
Kimi K2 Instruct 0905
OpenRouter
262K tokens context • $0.60 / $2.50 per 1M tokens
View full specifications →Detailed Comparison
Specification
R1 0528 (free)
Kimi K2 Instruct 0905
Provider
OpenRouter
OpenRouter
Context Window
164K tokens
262K tokens
Max Output Tokens
164K tokens
16K tokens
Input Pricing (per 1M tokens)
Free
$0.60
Output Pricing (per 1M tokens)
Free
$2.50
Release Date
May 2025
Sep 2025
Capabilities
Capability
R1 0528 (free)
Kimi K2 Instruct 0905
Text Generation
Function Calling
Advanced Reasoning
Which Model Should You Choose?
Choose R1 0528 (free) if:
- • Cost efficiency is a priority
- • You need advanced reasoning
Choose Kimi K2 Instruct 0905 if:
- • You need a larger context window