GPT-5.3 Codex
Coding-optimized GPT model for repository edits, reviews, and agentic software work
openai/gpt-5.3-codex- Lab
- OpenAI
- Family
- gpt-codex
- Providers
- 18
- Context
- 400,000
- Output limit
- 128,000
- Knowledge
- 2025-08
- Release
- 2026-02-05
- Updated
- 2026-02-05
- Weights
- Closed
- Input
- Output types
- Capabilities
- tools, reasoning, structured
Providers
18| Provider | Lab | Model ID | Context | Output | Price | Reasoning | Tool Call | Structured | Temperature |
|---|---|---|---|---|---|---|---|---|---|
| Abacus | OpenAI | gpt-5.3-codex | 400,000 | 128,000 | $1.75 / $14.00 | Yes | Yes | Yes | No |
| Cloudflare AI Gateway | OpenAI | openai/gpt-5.3-codex | 400,000 | 128,000 | $1.75 / $14.00 | Yes | Yes | Yes | No |
| FastRouter | OpenAI | openai/gpt-5.3-codex | 400,000 | 128,000 | $1.75 / $14.00 | Yes | Yes | Yes | No |
| FreeModel | OpenAI | gpt-5.3-codex | 400,000 | 128,000 | $1.75 / $14.00 | Yes | Yes | Yes | No |
| GitHub Copilot | OpenAI | gpt-5.3-codex | 400,000 | 128,000 | $1.75 / $14.00 | Yes | Yes | Yes | No |
| Kilo Gateway | OpenAI | openai/gpt-5.3-codex | 400,000 | 128,000 | $1.75 / $14.00 | Yes | Yes | - | - |
| LLM Gateway | OpenAI | gpt-5.3-codex | 400,000 | 128,000 | $1.75 / $14.00 | Yes | Yes | Yes | No |
| NanoGPT | OpenAI | openai/gpt-5.3-codex | 400,000 | 128,000 | $1.75 / $14.00 | Yes | Yes | Yes | - |
| Neon | OpenAI | gpt-5-3-codex | 400,000 | 128,000 | $1.75 / $14.00 | Yes | Yes | Yes | No |
| OpenAI | OpenAI | gpt-5.3-codex | 400,000 | 128,000 | $1.75 / $14.00 | Yes | Yes | Yes | No |
| OpenRouter | OpenAI | openai/gpt-5.3-codex | 400,000 | 128,000 | $1.75 / $14.00 | Yes | Yes | Yes | No |
| OrcaRouter | OpenAI | openai/gpt-5.3-codex | 400,000 | 128,000 | $1.75 / $14.00 | Yes | Yes | Yes | No |
| Pioneer | OpenAI | gpt-5.3-codex | 400,000 | 128,000 | $1.75 / $14.00 | Yes | Yes | Yes | No |
| Poe | OpenAI | openai/gpt-5.3-codex | 400,000 | 128,000 | $1.60 / $13.00 | Yes | Yes | - | No |
| Requesty | OpenAI | openai/gpt-5.3-codex | 400,000 | 128,000 | $1.75 / $14.00 | Yes | Yes | Yes | No |
| Venice AI | OpenAI | openai-gpt-53-codex | 400,000 | 128,000 | $2.19 / $17.50 | Yes | Yes | Yes | No |
| Vercel AI Gateway | OpenAI | openai/gpt-5.3-codex | 400,000 | 128,000 | $1.75 / $14.00 | Yes | Yes | Yes | Yes |
| ZenMux | OpenAI | openai/gpt-5.3-codex | 400,000 | 128,000 | $1.75 / $14.00 | Yes | Yes | - | Yes |
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