Head to head
Claude Sonnet 4.6 vs GPT-5.6 Terra
On a blended workload of one million input tokens and three million output tokens, GPT-5.6 Terra is 1.3× cheaper than Claude Sonnet 4.6.
| Claude Sonnet 4.6 | GPT-5.6 Terra | |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Input / MTok | $3 | $2 |
| Output / MTok | $15 | $12 |
| Cache read / MTok | $0.3 | $0.2 |
| Context window | 1,000,000 | — |
| Blended 1M in + 3M out | $48.00 | $38.00 |
| Status | ga | ga |