Head to head
GPT-5.6 Terra vs GPT-5.5 Pro
On a blended workload of one million input tokens and three million output tokens, GPT-5.6 Terra is 15.0× cheaper than GPT-5.5 Pro.
| GPT-5.6 Terra | GPT-5.5 Pro | |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Input / MTok | $2 | $30 |
| Output / MTok | $12 | $180 |
| Cache read / MTok | $0.2 | — |
| Context window | — | — |
| Blended 1M in + 3M out | $38.00 | $570.00 |
| Status | ga | ga |