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GPT 5 Codex

At a glance

GPT-5 optimized for code generation and software engineering tasks.

400K ctx$1.25/$10.00 per M
Agent Demos
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AI Output
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Benchmarks
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Reasoning
CodingInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:Epoch AI·OpenRouter· as of 2026-07-10
Agentic
Terminal Tasks44.3%
Specs
400K
Context
128K
Max output
Sep 2025
Released
Capabilities
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input$1.25/M tokens
Output$10.00/M tokens
Cache read$0.13/M tokens
Web search$0.01/search
Chat with GPT 5 CodexGo to model