Claude Fable 5 (Max, Opus 4.8 Fallback) vs LongCat 2.0
Which is better for the money: Claude Fable 5 (Max, Opus 4.8 Fallback) by Anthropic or LongCat 2.0 by LongCat? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-25.
Trade-off
Verdict
Depends on your budget
Claude Fable 5 (Max, Opus 4.8 Fallback) scores 30.5 points higher (49.6 vs 19.1) but costs 20× as much to run the benchmark ($11161 vs $545; flagship vs premium cost classes). They are not alternatives at one budget: pick Claude Fable 5 (Max, Opus 4.8 Fallback) when you need intelligence above 19.1, and LongCat 2.0 when 19.1 is enough.
| Metric | Claude Fable 5 (Max, Opus 4.8 Fallback) | LongCat 2.0 | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 49.6 | 19.1 | −61.5% LongCat 2.0 is 61.5% less intelligent |
| Total AA cost (lower is better) | $11,160.86 | $544.74 | −95.1% LongCat 2.0 is 95.1% cheaper |
| End-to-end time (lower is better) | 85.62s | 37.06s | −56.7% LongCat 2.0 is 56.7% faster |
| Price per 1M tokens (in / out) | $10.0 / $50.0 | $0.75 / $2.95 | |
| Input modalities | Text, Image | Text |
LongCat 2.0 vs Claude Fable 5 (Max, Opus 4.8 Fallback): 61.5% less intelligence, 95.1% less cost to run the AA benchmark, and 56.7% faster end-to-end.
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.
- LongCat 2.0 is off the frontier: at the same or lower cost, GPT-6.1 Sol (High) scores 50.20 for $521.
Claude Fable 5 (Max, Opus 4.8 Fallback)LongCat 2.0Today's Pareto frontierOpen-weights frontierEvery other model
Matchup
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Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/claude-fable-5/longcat-2-0 · Markdown: /api/v1/compare/claude-fable-5/longcat-2-0?format=md · llms.txt · agent skill