GPT-5.1 Codex mini
OpenAI · model · context window 400,000 tokens.
Pricing (per 1M tokens)
Specifications
Intelligence & value
MeasuredWorth it? GPT-5.1 Codex mini is on the price/quality frontier — nothing we track matches its overall Arena score for less. If you can accept a small quality drop, the downgrade calculator finds cheaper options.
Intelligence scores are community Arena ratings from LMArena / arena.ai, used under CC BY 4.0. Snapshot last refreshed 18 September 2026. Scores are a relative signal, not an absolute measure of capability. A Measured score was voted on directly; an Estimated score is inherited from an identical base model (a regional/creator-prefixed hosting duplicate). See our methodology.
Where else you can run GPT-5.1 Codex mini
The same model is resold by 18 providers we track. The typical one charges 1.3× what the cheapest does — $0.6880 against $0.5500 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 | $0.2000 | $1.60 | $0.5500 |
| Poe | $0.2200 | $1.80 | $0.6150 |
| Jiekou | $0.2250 | $1.80 | $0.6190 |
| Aihubmix | $0.2500 | $2.00 | $0.6880 |
| Azure | $0.2500 | $2.00 | $0.6880 |
| Azure Cognitive Services | $0.2500 | $2.00 | $0.6880 |
| Edenai | $0.2500 | $2.00 | $0.6880 |
| Helicone | $0.2500 | $2.00 | $0.6880 |
| Impossibl | $0.2500 | $2.00 | $0.6880 |
| Kilo | $0.2500 | $2.00 | $0.6880 |
Showing the 10 cheapest of 18. 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 mini
GPT-5.1 Codex mini 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
- $0.000250
- Output cost
- $0.00100
- Per request
- $0.00125
- Per day
- $1.25
- Per month
- $37.50
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.