AI/ML API
GPT-5.3 Codex
Canonical ID:
aimlapi/openai/gpt-5.3-codex
Coding-optimized GPT model for repository edits, reviews, and agentic software work
Overview
Pricing and Limits
Token pricing
- Input
- $4.8139/1M
- Output
- $38.5112/1M
- Cached input
- N/A
Context and output
- Context window
- 400,000
- Max output tokens
- 128,000
- Qualified ID
- aimlapi/openai/gpt-5.3-codex
Model Summary
GPT-5.3 Codex is a model listing in the AI/ML API provider catalog. It is categorized under the gpt-codex family.
The model supports text, image, pdf modalities across input/output paths. Reported context capacity is 400,000. Pricing is listed at $4.8139/1M input and $38.5112/1M output.
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Same Family: gpt-codex
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