GPT-5.6 Sol vs GPT-6 Sol
MultiLangBench?lab
GPT-5.6 Sol26.8
GPT-6 Sol57.7
MirrorCode?
GPT-5.6 Solat high20
GPT-6 Sol—
| Benchmark | GPT-5.6 Sol | GPT-6 Sol |
|---|---|---|
| Terminal-Bench 4.0 | 14.6 | 18.7 |
| DeepSWE 1.1 | 61.1 | 70.5 · max |
| SciCode | 57.4 | 53.8 |
| Terminal-Bench Science 0.1 | 22.4 · max | 8.6 |
| MultiLangBenchlab | 26.8 | 57.7 |
| WebDev Arena | — | 1,683 · max |
| SWE-bench Pro (v2 full) | 95.5 · xhigh | — |
| SWE-bench Pro (v2 hard) | 82.4 · xhigh | — |
| Terminal-Bench Hard (version unstated) | 62.9 | — |
| MirrorCode | 20 · high | — |
Specs
| Spec | GPT-5.6 Sol | GPT-6 Sol |
|---|---|---|
| Input, per 1M | $4 | $2 |
| Output, per 1M | $20 | $10 |
| Cost per task? | $0.50 | $0.25 |
| Speed, tok/s | 75 | — |
| Context | 1.05M | 1.05M |
| Weights | Closed | Closed |
| Released | Jul 2026 | Sep 2026 |
| See images | ✓ | ✓ |
| Read PDFs | Partial | Partial |
| Hear audio | — | — |
| Watch video | — | — |
| Call tools | ✓ | ✓ |
| Force a tool call | Partial | Partial |
| Return strict JSON | ✓ | ✓ |
| Search the web | ? | ? |
| Run code | ? | ? |
| Use a computer | ? | ? |
What breaks when you switch
GPT-5.6 Sol → GPT-6 Sol
Nothing known.
GPT-6 Sol → GPT-5.6 Sol
Nothing known.