Claude Fable 5.1 (Xhigh, Default Fallback) vs Gemini 3.5 Flash (High)
Which is better for the money: Claude Fable 5.1 (Xhigh, Default Fallback) by Anthropic or Gemini 3.5 Flash (High) by Google? 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 20.6 points higher (53.2 vs 32.6) but costs 2.1× as much to run the benchmark ($9063 vs $4222; both flagship class). Pick Claude Fable 5.1 (Xhigh, Default Fallba… when the extra intelligence is worth the premium, otherwise Gemini 3.5 Flash (High).
| Metric | Claude Fable 5.1 (Xhigh, Default Fallback) | Gemini 3.5 Flash (High) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 53.2 | 32.6 | −38.7% Gemini 3.5 Flash (Hig… is 38.7% less intelligent |
| Total AA cost (lower is better) | $9,063.11 | $4,222.12 | −53.4% Gemini 3.5 Flash (Hig… is 53.4% cheaper |
| End-to-end time (lower is better) | 86.63s | 16.71s | −80.7% Gemini 3.5 Flash (Hig… is 80.7% faster |
| Price per 1M tokens (in / out) | $10.0 / $50.0 | $1.50 / $9.00 | |
| Input modalities | Text, Image | Text, Image, Speech, Video |
Gemini 3.5 Flash (High) vs Claude Fable 5.1 (Xhigh, Default Fallback): 38.7% less intelligence, 53.4% less cost to run the AA benchmark, and 80.7% faster 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.
- Gemini 3.5 Flash (High) is off the frontier: at the same or lower cost, Claude Opus 5.5 (Xhigh, Default Fallback) scores 56.00 for $4057.
Claude Fable 5.1 (Xhigh, Default Fallback)Gemini 3.5 Flash (High)Today's Pareto frontierEvery other model
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