How much does GPT-5 Codex cost?

GPT-5 Codex costs $1.25 per million input tokens and $10.00 per million output tokens. For a typical conversation (~2,000 tokens), that's approximately $0.013 per message.

What benchmarks has GPT-5 Codex been tested on?

GPT-5 Codex has not been benchmarked yet. Scores are added as benchmarks are published.

Is GPT-5 Codex open source?

No, GPT-5 Codex is a proprietary model by OpenAI.

How does GPT-5 Codex compare to 3b De Ft Research_release?

GPT-5 Codex has an average score of 0.0 while 3b De Ft Research_release scores 0.0. 3b De Ft Research_release slightly outperforms GPT-5 Codex overall. See full comparison →

Home/Models/GPT-5 Codex

GPT-5 Codex

Name: GPT-5 Codex
Price: 1.25 USD
Author: OpenAI

by OpenAI · Released Sep 2025

Multimodal

Compare

Context

400K tokens (~200 books)

Input $/1M

$1.25

Output $/1M

$10.00

Type

multimodal

License

Proprietary

Benchmarks

0 tested

Data updated today

About

GPT-5-Codex is a specialized version of GPT-5 optimized for software engineering and coding workflows. It is designed for both interactive development sessions and long, independent execution of complex engineering tasks....

No benchmark data available yet.

Model Family · OpenAI GPT-5

GPT-5Aug 2025

54.4

$1.25/M in400Kctx26 benchmarks

GPT-5 ChatAug 2025

81.9+27.5

$1.25/M in128Kctx(-272K)7 benchmarks

GPT-5 CodexSep 2025

$1.25/M in400Kctx(+272K)

GPT-5 ImageOct 2025

$10.00/M in(+8.75)400Kctx