Claude Fable 5.2 (High, Default Fallback) vs GPT-6 Luna (Max)
Which is better for the money: Claude Fable 5.2 (High, Default Fallback) by Anthropic or GPT-6 Luna (Max) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-11-10.
Trade-off
Verdict
Depends on your budget
Claude Fable 5.2 (High, Default Fallbac… scores 33.9 points higher (61.8 vs 27.9) but costs 52× as much to run the benchmark ($7106 vs $136; 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 27.9, and GPT-6 Luna (Max) when 27.9 is enough.
| Metric | Claude Fable 5.2 (High, Default Fallback) | GPT-6 Luna (Max) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 61.8 | 27.9 | −54.9% GPT-6 Luna (Max) is 54.9% less intelligent |
| Total AA cost (lower is better) | $7,105.77 | $136.06 | −98.1% GPT-6 Luna (Max) is 98.1% cheaper |
| End-to-end time (lower is better) | 36.05s | 117.59s | +226.2% GPT-6 Luna (Max) is 226.2% slower |
| Price per 1M tokens (in / out) | $8.00 / $40.0 | $0.10 / $0.50 | |
| Input modalities | Text, Image | Text, Image |
GPT-6 Luna (Max) vs Claude Fable 5.2 (High, Default Fallback): 54.9% less intelligence, 98.1% less cost to run the AA benchmark, and 226.2% slower end-to-end.
Today's Pareto frontier
Against the frontier
- Claude Fable 5.2 (High, Default Fallback) is on today's frontier: nothing is both smarter and cheaper.
- GPT-6 Luna (Max) is off the frontier: at the same or lower cost, Muse Ember (Max) scores 36.00 for $117.
Claude Fable 5.2 (High, Default Fallback)GPT-6 Luna (Max)Today's Pareto frontierEvery other model
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