Claude Fable 5.1 (High, Default Fallback) vs Gemini 3.1 Flash-Lite
Which is better for the money: Claude Fable 5.1 (High, Default Fallback) by Anthropic or Gemini 3.1 Flash-Lite by Google? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-26.
Depends on your budget
Claude Fable 5.1 (High, Default Fallbac… scores 35.6 points higher (51.2 vs 15.6) but costs 34× as much to run the benchmark ($5242 vs $156; flagship vs mid-range cost classes). They are not alternatives at one budget: pick Claude Fable 5.1 (High, Default Fallbac… when you need intelligence above 15.6, and Gemini 3.1 Flash-Lite when 15.6 is enough.
| Metric | Claude Fable 5.1 (High, Default Fallback) | Gemini 3.1 Flash-Lite | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 51.2 | 15.6 | −69.5% Gemini 3.1 Flash-Lite is 69.5% less intelligent |
| Total AA cost (lower is better) | $5,241.59 | $155.87 | −97.0% Gemini 3.1 Flash-Lite is 97.0% cheaper |
| End-to-end time (lower is better) | 28.58s | 6.05s | −78.8% Gemini 3.1 Flash-Lite is 78.8% faster |
| Price per 1M tokens (in / out) | $10.0 / $50.0 | $0.25 / $1.50 | |
| Input modalities | Text, Image | Text, Image, Speech, Video |
Gemini 3.1 Flash-Lite vs Claude Fable 5.1 (High, Default Fallback): 69.5% less intelligence, 97.0% less cost to run the AA benchmark, and 78.8% faster end-to-end.
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.
- Gemini 3.1 Flash-Lite is off the frontier: at the same or lower cost, GPT-6 Luna (Max) scores 38.10 for $122.
Compare something else
Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/claude-fable-5-1-high/gemini-3-1-flash-lite-preview · Markdown: /api/v1/compare/claude-fable-5-1-high/gemini-3-1-flash-lite-preview?format=md · llms.txt · agent skill