GPT-5.1 Codex Max
OpenAI · model · context window 400,000 tokens.
Pricing (per 1M tokens)
Specifications
Where else you can run GPT-5.1 Codex Max
The same model is resold by 12 providers we track. The typical one charges 1.3× what the cheapest does — $3.44 against $2.75 per 1M tokens, blended 3:1. Routing the same workload to a different host is often a bigger saving than switching model.
| Provider | Input / 1M | Output / 1M | Blended |
|---|---|---|---|
| Ofox | $1.00 | $8.00 | $2.75 |
| Poe | $1.10 | $9.00 | $3.08 |
| Jiekou | $1.13 | $9.00 | $3.09 |
| Abacus | $1.25 | $10.00 | $3.44 |
| Azure | $1.25 | $10.00 | $3.44 |
| Edenai | $1.25 | $10.00 | $3.44 |
| Kilo | $1.25 | $10.00 | $3.44 |
| Opencode | $1.25 | $10.00 | $3.44 |
| OpenRouter ↗ | $1.25 | $10.00 | $3.44 |
| Vercel AI Gateway | $1.25 | $10.00 | $3.44 |
Showing the 10 cheapest of 12. The full list for every model is in the open endpoint dataset.
Third-party listings via models.dev, not rates we verify with each host the way we do first-party pricing. Treat them as a shortlist to check, not a quote — and confirm quantisation, context limits and rate limits before switching, since a cheaper host is not always serving the same thing.
Estimate cost with GPT-5.1 Codex Max
GPT-5.1 Codex Max is pre-selected below. Enter your token counts and volume to see the cost per request, per day and per month — then switch models to compare.
Results update automatically as you type.
- Input cost
- $0.00125
- Output cost
- $0.00500
- Per request
- $0.00625
- Per day
- $6.25
- Per month
- $187.50
Source: auto-discovery (models.dev). Prices are re-checked daily against the provider’s official pricing; this rate was last changed on 19 July 2026. A recent date here just means the price is still current, not that it moved.