GPT-5.3-Codex
LLM
by openai ·
openai-gpt-53-codex-20260224
Context window
400K
Max output
128K
Providers
2
Best input
$1.75
About this model
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...
Providers & prices
| Provider | Input $/MTok | Output $/MTok | Context | Upstream ID |
|---|---|---|---|---|
| MA Microsoft Azure | $1.75 | $14.00 | 400K | openai/gpt-5.3-codex |
| O OpenAI | $3.50 | $28.00 | 400K | openai/gpt-5.3-codex |