Claude Fable 5.1 (Xhigh, Default Fallback) vs GPT-6 Sol (Max)
Which is better for the money: Claude Fable 5.1 (Xhigh, Default Fallback) by Anthropic or GPT-6 Sol (Max) 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 (Xhigh, Default Fallba… scores 5.6 points higher (53.2 vs 47.6) but costs 5.9× as much to run the benchmark ($9063 vs $1536; flagship vs premium cost classes). They are not alternatives at one budget: pick Claude Fable 5.1 (Xhigh, Default Fallba… when you need intelligence above 47.6, and GPT-6 Sol (Max) when 47.6 is enough.
| Metric | Claude Fable 5.1 (Xhigh, Default Fallback) | GPT-6 Sol (Max) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 53.2 | 47.6 | −10.5% GPT-6 Sol (Max) is 10.5% less intelligent |
| Total AA cost (lower is better) | $9,063.11 | $1,535.80 | −83.1% GPT-6 Sol (Max) is 83.1% cheaper |
| End-to-end time (lower is better) | 108.69s | 124.49s | +14.5% GPT-6 Sol (Max) is 14.5% slower |
| Price per 1M tokens (in / out) | $10.0 / $50.0 | $2.00 / $10.0 | |
| Input modalities | Text, Image | Text, Image |
GPT-6 Sol (Max) vs Claude Fable 5.1 (Xhigh, Default Fallback): 10.5% less intelligence, 83.1% less cost to run the AA benchmark, and 14.5% slower end-to-end.
Today's Pareto frontier
Against the frontier
- Claude Fable 5.1 (Xhigh, Default Fallback) is off the frontier: at the same or lower cost, Claude Opus 5.5 (Max, Default Fallback) scores 57.60 for $8708.
- GPT-6 Sol (Max) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
Claude Fable 5.1 (Xhigh, Default Fallback)GPT-6 Sol (Max)Today's Pareto frontierEvery other model
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