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OpenAI: GPT-5.3-Codex
openai/gpt-5.3-codex
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...
specs & pricing
- Type
- text
- Provider
- openai
- Model ID
- openai/gpt-5.3-codex
- Capabilities
- vision, tools, reasoning
- Context window
- 400K tokens
- Input price
- $1.93 / 1M tokens
- Output price
- $15.40 / 1M tokens
Cloud price is billed from prepaid credits when a request fails over to the cloud. Open-weight models run free on GPUs you own — the gateway routes to your nodes first.