Head to head
GPT-5.1 vs GPT-5 Pro
On a blended workload of one million input tokens and three million output tokens, GPT-5.1 is 12.0× cheaper than GPT-5 Pro.
| GPT-5.1 | GPT-5 Pro | |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Input / MTok | $1.25 | $15 |
| Output / MTok | $10 | $120 |
| Cache read / MTok | $0.125 | — |
| Context window | — | — |
| Blended 1M in + 3M out | $31.25 | $375.00 |
| Status | ga | ga |