HEAD TO HEAD
Make the
right call.
Pick two to four models. Compare category evidence, price, context, speed and capabilities side by side.
Sign in to save this comparison →01 / SCORECARD
Coding focus · side by side
| Metric | GPT-5.6 Terra | GPT-6 Sol |
|---|---|---|
| Quantum Score | Insufficient verified data73% coverage | 48QUANTUM SCORE |
| Confidence / coverage | Limited evidence · 73% · 2 independent domains | Moderate confidence · 73% · 3 independent domains |
| Context window | 1,050,000 tokens | 1,050,000 tokens |
| Modalities / tools | text, image · tool use, vision | text, image · tool use, vision |
| Coding | 46 | 39 -7 vs first |
| Reasoning | 67 | 67 +0 vs first |
| Math | 80 | 79 -1 vs first |
| Research | — | — |
| Agents | 40 | 20 -20 vs first |
| Multimodal | — | — |
| Speed | — | — |
| Value | 40 | 37 -3 vs first |
| Input / 1M | $2.00 | $2.00 |
| Output / 1M | $12.00 | $10.00 |
| Measured output speed | — | — |
02 / EVIDENCE
Published benchmark evidence
| Benchmark | GPT-5.6 Terra | GPT-6 Sol |
|---|---|---|
| ARC-AGI-3 Semi-Private Standard harness best effort · 3 Semi-Private · ARC Prize Standard harness; best published effort per model | 0.8 % benchmark maintainer ↗ | 4.6236 % benchmark maintainer ↗ |
| LiveBench code_completion · 2026-06-25 · Public table; published model effort variant | 80.435 % benchmark maintainer ↗ | 80.435 % benchmark maintainer ↗ |
| LiveBench code_generation · 2026-06-25 · Public table; published model effort variant | 76.056 % benchmark maintainer ↗ | 83.099 % benchmark maintainer ↗ |
| LiveBench javascript · 2026-06-25 · Public table; published model effort variant | 68.182 % benchmark maintainer ↗ | 63.636 % benchmark maintainer ↗ |
| LiveBench AMPS_Hard · 2026-06-25 · Public table; published model effort variant | 98 % benchmark maintainer ↗ | 98 % benchmark maintainer ↗ |
| LiveBench olympiad · 2026-06-25 · Public table; published model effort variant | 91.535 % benchmark maintainer ↗ | 91.365 % benchmark maintainer ↗ |
| LiveBench theory_of_mind · 2026-06-25 · Public table; published model effort variant | 86.538 % benchmark maintainer ↗ | 84.615 % benchmark maintainer ↗ |
| LiveBench zebra_puzzle · 2026-06-25 · Public table; published model effort variant | 100 % benchmark maintainer ↗ | 100 % benchmark maintainer ↗ |
AS THE EVIDENCE CHANGED
Comparison history
Dated releases, price events, and benchmark publications. A price or test change can alter the factual comparison; this timeline does not pick a winner.
2026-09-22 · GPT-6 Sol and Luna added to the API ↗ · source
2026-07-09 · GPT-5.6 Terra released ↗ · source
2026-09-30 verified (test date not published) · gpt-5.6-terra entered LiveBench code_completion (2026-06-25) at 80.435 % · source ↗
2026-09-30 verified (test date not published) · gpt-5.6-terra entered LiveBench code_generation (2026-06-25) at 76.056 % · source ↗
2026-09-30 verified (test date not published) · gpt-5.6-terra entered LiveBench javascript (2026-06-25) at 68.182 % · source ↗
2026-09-30 verified (test date not published) · gpt-5.6-terra entered LiveBench AMPS_Hard (2026-06-25) at 98 % · source ↗
2026-09-30 verified (test date not published) · gpt-5.6-terra entered LiveBench olympiad (2026-06-25) at 91.535 % · source ↗
2026-09-30 verified (test date not published) · gpt-5.6-terra entered LiveBench theory_of_mind (2026-06-25) at 86.538 % · source ↗
2026-09-30 verified (test date not published) · gpt-5.6-terra entered LiveBench zebra_puzzle (2026-06-25) at 100 % · source ↗
2026-09-30 verified (test date not published) · gpt-6-sol entered LiveBench code_completion (2026-06-25) at 80.435 % · source ↗
2026-09-30 verified (test date not published) · gpt-6-sol entered LiveBench code_generation (2026-06-25) at 83.099 % · source ↗
2026-09-30 verified (test date not published) · gpt-6-sol entered LiveBench javascript (2026-06-25) at 63.636 % · source ↗
2026-09-30 verified (test date not published) · gpt-6-sol entered LiveBench AMPS_Hard (2026-06-25) at 98 % · source ↗
2026-09-30 verified (test date not published) · gpt-6-sol entered LiveBench olympiad (2026-06-25) at 91.365 % · source ↗
An overall score appears only after enough current, comparable, independently sourced results exist. Pricing and individual benchmark results remain visible meanwhile.