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 Sol | Grok 4.5 |
|---|---|---|
| Quantum Score | 55QUANTUM SCORE | 40QUANTUM SCORE |
| Confidence / coverage | Moderate confidence · 85% · 4 independent domains | Moderate confidence · 85% · 3 independent domains |
| Context window | 1,050,000 tokens | 500,000 tokens |
| Modalities / tools | text, image · tool use, vision | text, image · vision, tool use |
| Coding | 71 | 0 -71 vs first |
| Reasoning | 69 | 90 +21 vs first |
| Math | 54 | 82 +28 vs first |
| Research | — | — |
| Agents | 20 | 32 +12 vs first |
| Multimodal | 67 | 22 -45 vs first |
| Speed | — | — |
| Value | 31 | 35 +4 vs first |
| Input / 1M | $4.00 | $2.00 |
| Output / 1M | $20.00 | $6.00 |
| Measured output speed | — | — |
02 / EVIDENCE
Published benchmark evidence
| Benchmark | GPT-5.6 Sol | Grok 4.5 |
|---|---|---|
| LiveBench code_completion · 2026-06-25 · Public table; published model effort variant | 84.783 % benchmark maintainer ↗ | 69.565 % benchmark maintainer ↗ |
| LiveBench code_generation · 2026-06-25 · Public table; published model effort variant | 83.099 % benchmark maintainer ↗ | 67.606 % benchmark maintainer ↗ |
| LiveBench javascript · 2026-06-25 · Public table; published model effort variant | 63.636 % benchmark maintainer ↗ | 72.727 % benchmark maintainer ↗ |
| LiveBench AMPS_Hard · 2026-06-25 · Public table; published model effort variant | 98 % benchmark maintainer ↗ | 99 % benchmark maintainer ↗ |
| LiveBench olympiad · 2026-06-25 · Public table; published model effort variant | 91.693 % benchmark maintainer ↗ | 89.239 % benchmark maintainer ↗ |
| LiveBench theory_of_mind · 2026-06-25 · Public table; published model effort variant | 84.615 % benchmark maintainer ↗ | 82.692 % benchmark maintainer ↗ |
| LiveBench zebra_puzzle · 2026-06-25 · Public table; published model effort variant | 100 % benchmark maintainer ↗ | 94 % benchmark maintainer ↗ |
| MMMU-Pro Mercor public leaderboard · MMMU-Pro Mercor public set · Mercor independent evaluation | 83.6 % independent lab ↗ | 79 % independent lab ↗ |
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.
2026-08-12 · Grok 4.6 released with published agent evaluations ↗ · source
2026-07-09 · GPT-5.6 Sol released ↗ · source
2026-09-30 verified (test date not published) · grok-4-5 entered LiveBench code_completion (2026-06-25) at 69.565 % · source ↗
2026-09-30 verified (test date not published) · grok-4-5 entered LiveBench code_generation (2026-06-25) at 67.606 % · source ↗
2026-09-30 verified (test date not published) · grok-4-5 entered LiveBench javascript (2026-06-25) at 72.727 % · source ↗
2026-09-30 verified (test date not published) · grok-4-5 entered LiveBench AMPS_Hard (2026-06-25) at 99 % · source ↗
2026-09-30 verified (test date not published) · grok-4-5 entered LiveBench olympiad (2026-06-25) at 89.239 % · source ↗
2026-09-30 verified (test date not published) · grok-4-5 entered LiveBench theory_of_mind (2026-06-25) at 82.692 % · source ↗
2026-09-30 verified (test date not published) · grok-4-5 entered LiveBench zebra_puzzle (2026-06-25) at 94 % · source ↗
2026-09-30 verified (test date not published) · gpt-5.6-sol entered LiveBench code_completion (2026-06-25) at 84.783 % · source ↗
2026-09-30 verified (test date not published) · gpt-5.6-sol entered LiveBench code_generation (2026-06-25) at 83.099 % · source ↗
2026-09-30 verified (test date not published) · gpt-5.6-sol entered LiveBench javascript (2026-06-25) at 63.636 % · source ↗
2026-09-30 verified (test date not published) · gpt-5.6-sol entered LiveBench AMPS_Hard (2026-06-25) at 98 % · source ↗
2026-09-30 verified (test date not published) · gpt-5.6-sol entered LiveBench olympiad (2026-06-25) at 91.693 % · source ↗
An overall score appears only after enough current, comparable, independently sourced results exist. Pricing and individual benchmark results remain visible meanwhile.