GPT-6 Luna vs Claude Opus 5
25 SHARED BENCHMARKSAcross 25 shared benchmarks, GPT-6 Luna scores higher on 2 and Claude Opus 5 on 23. The widest gap is Terminal-Bench 4.0, where Claude Opus 5 scores 49 against 12.6. GPT-6 Luna is the cheaper of the two on tracked API pricing ($0.10 against $5.00 per million input tokens).
At a glance
Release dates: Artificial Analysis for GPT-6 Luna; the vendor's own announcement for Claude Opus 5. Prices: OpenAI's own price page for GPT-6 Luna; Artificial Analysis for Claude Opus 5. ◆ = independently verified score.
Where each leadsby capability area · benchmark wins
Biggest gaps
GPT-6 Luna pulls furthest ahead on
- AA-LCR83.3 vs 79.3
Claude Opus 5 pulls furthest ahead on
- Terminal-Bench 4.049 vs 12.6
- AA-Omniscience · Non-hallucination39.2 vs 23.3
- ARC-AGI-290.4 vs 59.3
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 (openai-official, direct), otherwise the lowest tracked offer.