Claude Fable 5.1 (High, Default Fallback) vs GPT-6.1 Sol (High)
Which is better for the money: Claude Fable 5.1 (High, Default Fallback) by Anthropic or GPT-6.1 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 1.0 points higher (51.2 vs 50.2) but costs 10× as much to run the benchmark ($5242 vs $521; 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 50.2, and GPT-6.1 Sol (High) when 50.2 is enough.
| Metric | Claude Fable 5.1 (High, Default Fallback) | GPT-6.1 Sol (High) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 51.2 | 50.2 | −2.0% GPT-6.1 Sol (High) is 2.0% less intelligent |
| Total AA cost (lower is better) | $5,241.59 | $521.32 | −90.1% GPT-6.1 Sol (High) is 90.1% cheaper |
| End-to-end time (lower is better) | 28.41s | 82.55s | +190.6% GPT-6.1 Sol (High) is 190.6% slower |
| Price per 1M tokens (in / out) | $10.0 / $50.0 | $2.00 / $10.0 | |
| Input modalities | Text, Image | Text, Image |
GPT-6.1 Sol (High) vs Claude Fable 5.1 (High, Default Fallback): 2.0% less intelligence, 90.1% less cost to run the AA benchmark, and 190.6% slower 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-6.1 Sol (High) is on today's frontier: nothing is both smarter and cheaper.
Claude Fable 5.1 (High, Default Fallback)GPT-6.1 Sol (High)Today's Pareto frontierEvery other model
Matchup
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