Claude Fable 5.1 (High, Default Fallback) vs GPT-6 Sol (High)
Which is better for the money: Claude Fable 5.1 (High, Default Fallback) by Anthropic or GPT-6 Sol (High) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-26.
Trade-off
Verdict
Depends on your budget
Claude Fable 5.1 (High, Default Fallbac… scores 8.8 points higher (51.2 vs 42.4) but costs 8.7× as much to run the benchmark ($5242 vs $605; flagship vs premium cost classes). They are not alternatives at one budget: pick Claude Fable 5.1 (High, Default Fallbac… when you need intelligence above 42.4, and GPT-6 Sol (High) when 42.4 is enough.
| Metric | Claude Fable 5.1 (High, Default Fallback) | GPT-6 Sol (High) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 51.2 | 42.4 | −17.2% GPT-6 Sol (High) is 17.2% less intelligent |
| Total AA cost (lower is better) | $5,241.59 | $604.52 | −88.5% GPT-6 Sol (High) is 88.5% cheaper |
| End-to-end time (lower is better) | 28.41s | 22.47s | −20.9% GPT-6 Sol (High) is 20.9% faster |
| Price per 1M tokens (in / out) | $10.0 / $50.0 | $2.00 / $10.0 | |
| Input modalities | Text, Image | Text, Image |
GPT-6 Sol (High) vs Claude Fable 5.1 (High, Default Fallback): 17.2% less intelligence, 88.5% less cost to run the AA benchmark, and 20.9% faster end-to-end.
Today's Pareto frontier
Against the frontier
- Claude Fable 5.1 (High, Default Fallback) is off the frontier: at the same or lower cost, Claude Opus 5.5 (Xhigh, Default Fallback) scores 56.00 for $4057.
- GPT-6 Sol (High) is off the frontier: at the same or lower cost, GPT-6.1 Sol (High) scores 50.20 for $521.
Claude Fable 5.1 (High, Default Fallback)GPT-6 Sol (High)Today's Pareto frontierEvery other model
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