Sonar Reasoning Pro vs Kimi K2 Instruct
Kimi K2 Instruct is more cost-effective, Sonar Reasoning Pro includes advanced reasoning, Kimi K2 Instruct has open weights. Compare full specs, pricing, and choose the best model for your use case.
Quick Overview
Sonar Reasoning Pro
Vercel AI Gateway
127K tokens context • $2.00 / $8.00 per 1M tokens
View full specifications →Kimi K2 Instruct
Vercel AI Gateway
131K tokens context • $1.00 / $3.00 per 1M tokens
View full specifications →Detailed Comparison
Specification
Sonar Reasoning Pro
Kimi K2 Instruct
Provider
Vercel AI Gateway
Vercel AI Gateway
Context Window
127K tokens
131K tokens
Max Output Tokens
8K tokens
16K tokens
Input Pricing (per 1M tokens)
$2.00
$1.00
Output Pricing (per 1M tokens)
$8.00
$3.00
Release Date
Feb 2025
Jul 2025
Capabilities
Capability
Sonar Reasoning Pro
Kimi K2 Instruct
Text Generation
Advanced Reasoning
Function Calling
Which Model Should You Choose?
Choose Sonar Reasoning Pro if:
- • You need advanced reasoning
Choose Kimi K2 Instruct if:
- • You need a larger context window
- • Cost efficiency is a priority
- • You prefer open weights