GPT-5.1 Codex
gpt-5.1-codex
Multimodal
3 gateways
1.54x price spread
Where you can run it
| Gateway | Its id | Context | Max output | Input / Mtok | Output / Mtok |
|---|---|---|---|---|---|
| Cheaper Inference Cheapest input | gpt-5.1-codex |
400K | 128K | $0.813 | $6.50 |
| Experiential Labs | gpt-5.1-codex |
400K | 128K | $1.25 | $10.00 |
| LLM Gateway | gpt-5.1-codex |
400K | — | $1.25 | $10.00 |
Prices are US dollars per million tokens, as published in each gateway's own catalog at the last crawl. A dash means that gateway publishes no value — not that it is free. Rows differ because gateways set their own markup, and some let you bring your own provider key.
- Canonical id
gpt-5.1-codex- Vendor
- OpenAI
- Type
- Multimodal
- Gateways serving it
- Cheaper InferenceExperiential LabsLLM Gateway
- Largest context window
- 400K tokens
- Input price range
- $0.813 – $1.25 / Mtok
- Price spread
- 1.54x between cheapest and dearest gateway
- Accepts
- Text, Image
- Returns
- Text
- Cataloged since
History
What changed for GPT-5.1 Codex
Recorded by the daily catalog crawl — when gateways picked this model up, dropped it, or repriced it.