Claude Fable 5.2 (High, Default Fallback) vs GPT-6 Luna (Non-reasoning)
Which is better for the money: Claude Fable 5.2 (High, Default Fallback) by Anthropic or GPT-6 Luna (Non-reasoning) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-11-10.
Depends on your budget
Claude Fable 5.2 (High, Default Fallbac… scores 52.4 points higher (61.8 vs 9.4) but costs 134× as much to run the benchmark ($7106 vs $53.1; flagship vs mid-range cost classes). They are not alternatives at one budget: pick Claude Fable 5.2 (High, Default Fallbac… when you need intelligence above 9.4, and GPT-6 Luna (Non-reasoning) when 9.4 is enough.
| Metric | Claude Fable 5.2 (High, Default Fallback) | GPT-6 Luna (Non-reasoning) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 61.8 | 9.4 | −84.8% GPT-6 Luna (Non-reaso… is 84.8% less intelligent |
| Total AA cost (lower is better) | $7,105.77 | $53.14 | −99.3% GPT-6 Luna (Non-reaso… is 99.3% cheaper |
| End-to-end time (lower is better) | 36.05s | 6.05s | −83.2% GPT-6 Luna (Non-reaso… is 83.2% faster |
| Price per 1M tokens (in / out) | $8.00 / $40.0 | $0.10 / $0.50 | |
| Input modalities | Text, Image | Text, Image |
GPT-6 Luna (Non-reasoning) vs Claude Fable 5.2 (High, Default Fallback): 84.8% less intelligence, 99.3% less cost to run the AA benchmark, and 83.2% faster end-to-end.
Against the frontier
- Claude Fable 5.2 (High, Default Fallback) is on today's frontier: nothing is both smarter and cheaper.
- GPT-6 Luna (Non-reasoning) is off the frontier: at the same or lower cost, Claude Haiku 5.5 (Low) scores 18.60 for $39.6.
Compare something else
Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/claude-fable-5-2-high/gpt-6-luna-non-reasoning · Markdown: /api/v1/compare/claude-fable-5-2-high/gpt-6-luna-non-reasoning?format=md · llms.txt · agent skill