OpenAI
GPT-5.3-Codex
openai/gpt-5.3-codex
Input
$1.75
per 1M tokens
Output
$14.00
per 1M tokens
Cached input
$0.175
per 1M tokens
GPT-5.3-Codex is OpenAI’s most advanced agentic coding model, combining the frontier software engineering performance of GPT-5.2-Codex with the broader reasoning and professional knowledge capabilities of GPT-5.2. It achieves state-of-the-art results...
- Released
- Context window
- 400K tokens
- Max output
- 128K tokens
- Input
- text, image, file
- Output
- text
- Reasoning
- Yes
Price history
No price changes since we started tracking on .
Providers on OpenRouter
3 endpoints serve this model. Uptime is OpenRouter's share of successful requests; prices per 1M tokens.
| Provider | Input | Output | Context window | Uptime 30 min | Uptime 24 h |
|---|---|---|---|---|---|
| Azure | $1.75 | $14.00 | 400K | 100% | 100% |
| OpenAIvendor's own | $1.75 | $14.00 | 400K | 100% | 100% |
| OpenAIfastvendor's own | $3.50 | $28.00 | 400K | — | — |