Claude Fable 5 (Max, Opus 4.8 Fallback) vs GPT-6 Sol (Medium)
Which is better for the money: Claude Fable 5 (Max, Opus 4.8 Fallback) by Anthropic or GPT-6 Sol (Medium) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-24.
Trade-off
Verdict
Depends on your budget
Claude Fable 5 (Max, Opus 4.8 Fallback) scores 9.8 points higher (49.6 vs 39.8) but costs 27× as much to run the benchmark ($11161 vs $416; flagship vs mid-range cost classes). They are not alternatives at one budget: pick Claude Fable 5 (Max, Opus 4.8 Fallback) when you need intelligence above 39.8, and GPT-6 Sol (Medium) when 39.8 is enough.
| Metric | Claude Fable 5 (Max, Opus 4.8 Fallback) | GPT-6 Sol (Medium) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 49.6 | 39.8 | −19.8% GPT-6 Sol (Medium) is 19.8% less intelligent |
| Total AA cost (lower is better) | $11,160.86 | $416.32 | −96.3% GPT-6 Sol (Medium) is 96.3% cheaper |
| End-to-end time (lower is better) | 71.92s | Not reported | — not comparable |
| Price per 1M tokens (in / out) | $10.0 / $50.0 | $2.00 / $10.0 | |
| Input modalities | Text, Image | Text, Image |
GPT-6 Sol (Medium) vs Claude Fable 5 (Max, Opus 4.8 Fallback): 19.8% less intelligence, 96.3% less cost to run the AA benchmark, and end-to-end time not fully reported.
Today's Pareto frontier
Against the frontier
- Claude Fable 5 (Max, Opus 4.8 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 (Medium) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Medium) scores 47.80 for $361.
Claude Fable 5 (Max, Opus 4.8 Fallback)GPT-6 Sol (Medium)Today's Pareto frontierEvery other model
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