Cheapest GPT-5.1-Codex API providers
3 providers host GPT-5.1-Codex. The cheapest right now is OpenAI at $1.25/MTok input and $10.00/MTok output. Prices below are pulled live from each provider, updated daily.
What would GPT-5.1-Codex cost you?
Input tokens / month150M
Output tokens / month30M
Projected monthly cost = (input price × 150M) + (output price × 30M). Drag the sliders to match your actual workload; the chart re-ranks live.
| # | Host | Context | Input $/MTok | Output $/MTok | Blended | Uptime 30m | Quant |
|---|---|---|---|---|---|---|---|
| 1 | OpenAI | 400k | $1.25 | $10.00 | $2.71 | — | — |
| 2 | Azure | 400k | $1.25 | $10.00 | $2.71 | — | — |
| 3 | Azure | 400k | $1.25 | $10.00 | $2.71 | 100.00% | — |