GPT-5 Nano vs Grok 4
GPT-5 Nano offers 400K tokens context vs 256K tokens, GPT-5 Nano is more cost-effective, GPT-5 Nano supports vision. Compare full specs, pricing, and choose the best model for your use case.
Quick Overview
Detailed Comparison
Specification
GPT-5 Nano
Grok 4
Provider
FastRouter
FastRouter
Context Window
400K tokens
256K tokens
Max Output Tokens
128K tokens
64K tokens
Input Pricing (per 1M tokens)
$0.05
$3.00
Output Pricing (per 1M tokens)
$0.40
$15.00
Release Date
Aug 2025
Jul 2025
Capabilities
Capability
GPT-5 Nano
Grok 4
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