GPT-5.6 Luna vs GPT-6 Luna
25 SHARED BENCHMARKSAcross 25 shared benchmarks, GPT-5.6 Luna scores higher on 14 and GPT-6 Luna on 11. The widest gap is AA-Omniscience · Non-hallucination, where GPT-6 Luna scores 23.3 against 7.4. GPT-6 Luna is the cheaper of the two on tracked API pricing ($0.10 against $0.20 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 Luna. ◆ = independently verified score.
Where each leadsby capability area · benchmark wins
Biggest gaps
GPT-5.6 Luna pulls furthest ahead on
- GDPVal47.2 vs 43.4
- LiveBench · Instruction Following60.1 vs 55.9
- LiveBench · Coding82.9 vs 79
GPT-6 Luna pulls furthest ahead on
- AA-Omniscience · Non-hallucination23.3 vs 7.4
- LMArena · WebDev1593 vs 1520
Every shared benchmark25 · grouped by area
Reasoning 5
Coding 4
Agentic 2
Factuality 2
Instruction Following 1
Long Context 1
Math 1
Multimodal 1
Other shared benchmarks 8
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.