GPT-5.6 Sol vs GPT-6 Sol
32 SHARED BENCHMARKSAcross 32 shared benchmarks, GPT-5.6 Sol scores higher on 18 and GPT-6 Sol on 14. The widest gap is AA-Omniscience · Non-hallucination, where GPT-6 Sol scores 39.9 against 7.8. GPT-6 Sol is the cheaper of the two on tracked API pricing ($2.00 against $4.00 per million input tokens).
At a glance
Release dates per Artificial Analysis. Prices: Artificial Analysis for GPT-5.6 Sol; Artificial Analysis for GPT-6 Sol. ◆ = independently verified score.
Where each leadsby capability area · benchmark wins
Biggest gaps
GPT-5.6 Sol pulls furthest ahead on
- ARC-AGI-37.8 vs 4.6
- AA IT-Bench SRE56.2 vs 49.4
- GDPVal54.4 vs 49.3
GPT-6 Sol pulls furthest ahead on
- AA-Omniscience · Non-hallucination39.9 vs 7.8
- Vectara HHEM hallucination rate6.5 vs 12.4 ↓
- SimpleBench73.1 vs 64.8
Every shared benchmark32 · grouped by area
Reasoning 6
Coding 4
Agentic 3
Factuality 3
Instruction Following 1
Long Context 1
Math 1
Multimodal 1
Other shared benchmarks 12
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.