GPT-5.6 Luna vs GPT-6 Sol
45 SHARED BENCHMARKSAcross 45 shared benchmarks, GPT-5.6 Luna scores higher on 4 and GPT-6 Sol on 39, with 2 level. The widest gap is AA-Omniscience · Non-hallucination, where GPT-6 Sol scores 39.9 against 7.4. GPT-5.6 Luna is the cheaper of the two on tracked API pricing ($0.20 against $2.00 per million input tokens).
At a glance
Release dates per Artificial Analysis. Prices: Artificial Analysis for GPT-5.6 Luna; Artificial Analysis for GPT-6 Sol. ◆ = independently verified score.
Where each leadsby capability area · benchmark wins
Biggest gaps
GPT-5.6 Luna pulls furthest ahead on
No ratified-area lead of 3 points or more.
GPT-6 Sol pulls furthest ahead on
- AA-Omniscience · Non-hallucination39.9 vs 7.4
- Terminal-Bench 4.043.9 vs 11.6
- SimpleBench73.1 vs 46.8
Every shared benchmark45 · grouped by area
Reasoning 6
Coding 4
Agentic 3
Factuality 2
Instruction Following 1
Long Context 1
Math 1
Multimodal 1
Other shared benchmarks 26
Each score is the one the model's own page shows — the most authoritative tracked result for that benchmark, on the benchmark's standard methodology (source-attributed). ↓ marks lower-is-better metrics; ◆ an independently verified score. Open either model for its full surface, provenance and pricing. Quoted rates are the price-setter row we currently track for each model — its direct or vendor-official listing where one exists (direct, direct), otherwise the lowest tracked offer.