HEAD TO HEAD
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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 Luna | 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 | 70 | 39 -31 vs first |
| Reasoning | 51 | 67 +16 vs first |
| Math | 67 | 79 +12 vs first |
| Research | — | — |
| Agents | 20 | 20 +0 vs first |
| Multimodal | — | — |
| Speed | — | — |
| Value | 50 | 37 -13 vs first |
| Input / 1M | $0.20 | $2.00 |
| Output / 1M | $1.20 | $10.00 |
| Measured output speed | — | — |
02 / EVIDENCE
Published benchmark evidence
| Benchmark | GPT-5.6 Luna | GPT-6 Sol |
|---|---|---|
| ARC-AGI-3 Semi-Private Standard harness best effort · 3 Semi-Private · ARC Prize Standard harness; best published effort per model | 0.18 % benchmark maintainer ↗ | 4.6236 % benchmark maintainer ↗ |
| LiveBench code_completion · 2026-06-25 · Public table; published model effort variant | 86.957 % benchmark maintainer ↗ | 80.435 % benchmark maintainer ↗ |
| LiveBench code_generation · 2026-06-25 · Public table; published model effort variant | 78.873 % benchmark maintainer ↗ | 83.099 % benchmark maintainer ↗ |
| LiveBench javascript · 2026-06-25 · Public table; published model effort variant | 63.636 % 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 | 88.646 % benchmark maintainer ↗ | 91.365 % benchmark maintainer ↗ |
| LiveBench theory_of_mind · 2026-06-25 · Public table; published model effort variant | 73.077 % benchmark maintainer ↗ | 84.615 % benchmark maintainer ↗ |
| LiveBench zebra_puzzle · 2026-06-25 · Public table; published model effort variant | 93.5 % 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 Luna released ↗ · source
2026-09-30 verified (test date not published) · gpt-5.6-luna entered LiveBench code_completion (2026-06-25) at 86.957 % · source ↗
2026-09-30 verified (test date not published) · gpt-5.6-luna entered LiveBench code_generation (2026-06-25) at 78.873 % · source ↗
2026-09-30 verified (test date not published) · gpt-5.6-luna entered LiveBench javascript (2026-06-25) at 63.636 % · source ↗
2026-09-30 verified (test date not published) · gpt-5.6-luna entered LiveBench AMPS_Hard (2026-06-25) at 98 % · source ↗
2026-09-30 verified (test date not published) · gpt-5.6-luna entered LiveBench olympiad (2026-06-25) at 88.646 % · source ↗
2026-09-30 verified (test date not published) · gpt-5.6-luna entered LiveBench theory_of_mind (2026-06-25) at 73.077 % · source ↗
2026-09-30 verified (test date not published) · gpt-5.6-luna entered LiveBench zebra_puzzle (2026-06-25) at 93.5 % · 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.