OpenAI-compatible — swap the base URL and it works with your existing SDK.
| Type | Price |
|---|---|
| Output | |
| Benchmark | Score | What it measures | Source | Retrieved |
|---|---|---|---|---|
| GPQA Diamond | 94.6% | Google-proof graduate science questions (hardest subset) | Source | September 22, 2026 |
GPT-5.6 became available on July 9, 2026.
Yes, GPT-5.6 can stream responses as they are generated.
Yes, GPT-5.6 supports both function calling and structured outputs.
GPT-5.6 was built by OpenAI.
