GPT 5 Codex

gpt-5-codex
GPT-5-Codex is a specialized version of GPT-5 optimized for software engineering and coding workflows.
Reasoning
Speed
Price
$1.20 â€ĸ $9.60
Cache Price
$0.12 â€ĸ $1.20
Input
Output

Specifications

Context Window
400K
Max Output Tokens
100K
Reasoning Token Support
✓

Modalities

Text

Input and output

Image

Not supported

Audio

Not supported

Video

Not supported

Endpoints

OpenAI Compatible
Chat Completions
/v1/chat/completions
Responses
/v1/responses
Embeddings
/v1/embeddings
Image Generation
/v1/images/generations
Image Edit
/v1/images/edits
Videos
/v1/videos
Claude Compatible
Messages
/v1/messages
Gemini Compatible
Generate Content
/v1beta/models/{model}:{operator}