Cracked AI Engineering

GPT-5 vs Claude Opus 4.1

GPT-5 offers 400K tokens context vs 200K tokens, GPT-5 is more cost-effective. Compare full specs, pricing, and choose the best model for your use case.

Quick Overview

GPT-5

OpenCode Zen

400K tokens context • $1.25 / $10.00 per 1M tokens

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Claude Opus 4.1

OpenCode Zen

200K tokens context • $15.00 / $75.00 per 1M tokens

View full specifications →

Detailed Comparison

Specification
GPT-5
Claude Opus 4.1
Provider
OpenCode Zen
OpenCode Zen
Context Window
400K tokens
200K tokens
Max Output Tokens
128K tokens
32K tokens
Input Pricing (per 1M tokens)
$1.25
$15.00
Output Pricing (per 1M tokens)
$10.00
$75.00
Release Date
Aug 2025
Aug 2025

Capabilities

Capability
GPT-5
Claude Opus 4.1
Text Generation
Vision
Function Calling
Advanced Reasoning
File Attachments

Which Model Should You Choose?

Choose GPT-5 if:

  • • You need a larger context window
  • • Cost efficiency is a priority

Choose Claude Opus 4.1 if: