GPT OSS 120B vs Grok 4
Grok 4 offers 256K tokens context vs 131K tokens, GPT OSS 120B is more cost-effective, GPT OSS 120B has open weights. Compare full specs, pricing, and choose the best model for your use case.
Quick Overview
Detailed Comparison
Specification
GPT OSS 120B
Grok 4
Provider
FastRouter
FastRouter
Context Window
131K tokens
256K tokens
Max Output Tokens
33K tokens
64K tokens
Input Pricing (per 1M tokens)
$0.15
$3.00
Output Pricing (per 1M tokens)
$0.60
$15.00
Release Date
Aug 2025
Jul 2025
Capabilities
Capability
GPT OSS 120B
Grok 4
Text Generation
Function Calling
Advanced Reasoning
Which Model Should You Choose?
Choose GPT OSS 120B if:
- • Cost efficiency is a priority
- • You prefer open weights
Choose Grok 4 if:
- • You need a larger context window