Verdict
GPT-5.6 Sol leads 16–0 across 16 shared benchmarks.
GPT-5.6 Sol 16 · GPT-5.6 Terra 0 · higher isn't always better — check the caveats below.
Reported scores — protocols may differ. How we compare
Reasoning: GPT-5.6 Sol leads 4–0 across 4 shared reasoning benchmarks (largest gap: SimpleQA Verified, 71.6 vs 43.1 — single evaluator).
Unknown: GPT-5.6 Sol leads 3–0 across 3 shared unknown benchmarks (largest gap: Mystery Game Puzzles, 53.73 vs 28.4 — single evaluator).
Coding: GPT-5.6 Sol leads 2–0 across 2 shared coding benchmarks (largest gap: FrontierCode, 47.5 vs 41.3 — single evaluator).
Math: GPT-5.6 Sol leads 2–0 across 2 shared math benchmarks (largest gap: FrontierMath-Tier-4-v2-Private, 82.93 vs 70.73 — single evaluator).
GPT-5.6 Sol leads 16–0 across 16 shared benchmarks. GPT-5.6 Sol leads 16 benchmarks and GPT-5.6 Terra leads 0. Higher isn't always better — see the integrity caveats on each benchmark.
GPT-5.6 Sol and GPT-5.6 Terra have 16 benchmarks in common in our data — those are the only rows where a direct, apples-to-apples comparison is drawn.
GPT-5.6 Sol leads reasoning 4–0. GPT-5.6 Sol leads unknown 3–0.