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Model details
GPT 5.3 Codex
Find out what this model does, when it was released, and which provider serves it.
Vercel AI Gatewayopenai/gpt-5.3-codexgpt
Quick Info
- Provider
- Vercel AI Gateway
- Model key
- openai/gpt-5.3-codex
- Release date
- Feb 24, 2026
- Last updated
- Feb 24, 2026
- Knowledge
- Unknown
- Input modalities
- text, image, pdf
- Output modalities
- text
- Capabilities
- Reasoning, Tool calling, Attachments, Temp controls
- Cost summary
- In $1.75 · Out $14.00
- Limit summary
- 400,000 token context window
Cost
- Input token cost
- $1.75
- Output token cost
- $14.00
Limits
- Input tokens
- 272,000 tokens
- Output tokens
- 128,000 tokens