GPT-5 Nano vs Kimi K2 Instruct
GPT-5 Nano offers 400K tokens context vs 131K tokens, GPT-5 Nano is more cost-effective, GPT-5 Nano includes advanced reasoning. Compare full specs, pricing, and choose the best model for your use case.
Quick Overview
GPT-5 Nano
Vercel AI Gateway
400K tokens context • $0.05 / $0.40 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
GPT-5 Nano
Kimi K2 Instruct
Provider
Vercel AI Gateway
Vercel AI Gateway
Context Window
400K tokens
131K tokens
Max Output Tokens
128K tokens
16K tokens
Input Pricing (per 1M tokens)
$0.05
$1.00
Output Pricing (per 1M tokens)
$0.40
$3.00
Release Date
Aug 2025
Jul 2025
Capabilities
Capability
GPT-5 Nano
Kimi K2 Instruct
Text Generation
Vision
Function Calling
Advanced Reasoning
File Attachments
Which Model Should You Choose?
Choose GPT-5 Nano if:
- • You need a larger context window
- • Cost efficiency is a priority
- • You need advanced reasoning
Choose Kimi K2 Instruct if:
- • You prefer open weights