Cracked AI Engineering

Claude Opus 4 vs Grok Code Fast 1

Grok Code Fast 1 offers 256K tokens context vs 80K tokens, Claude Opus 4 supports vision. Compare full specs, pricing, and choose the best model for your use case.

Quick Overview

Claude Opus 4

GitHub Copilot

80K tokens context • Pricing not available

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Grok Code Fast 1

GitHub Copilot

256K tokens context • Pricing not available

View full specifications →

Detailed Comparison

Specification
Claude Opus 4
Grok Code Fast 1
Provider
GitHub Copilot
GitHub Copilot
Context Window
80K tokens
256K tokens
Max Output Tokens
16K tokens
10K tokens
Release Date
May 2025
Aug 2025

Capabilities

Capability
Claude Opus 4
Grok Code Fast 1
Text Generation
Vision
Advanced Reasoning
File Attachments
Function Calling

Which Model Should You Choose?

Choose Claude Opus 4 if:

    Choose Grok Code Fast 1 if:

    • • You need a larger context window