Claude Fable 5.1 (Low, Default Fallback) vs GPT-6 Astra (Max)
Which is better for the money: Claude Fable 5.1 (Low, Default Fallback) by Anthropic or GPT-6 Astra (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
GPT-6 Astra (Max) scores 5.9 points higher (52.7 vs 46.8) but costs 1.7× as much to run the benchmark ($5324 vs $3158; both flagship class). Pick GPT-6 Astra (Max) when the extra intelligence is worth the premium, otherwise Claude Fable 5.1 (Low, Default Fallback).
| Metric | Claude Fable 5.1 (Low, Default Fallback) | GPT-6 Astra (Max) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 46.8 | 52.7 | +12.6% GPT-6 Astra (Max) is 12.6% more intelligent |
| Total AA cost (lower is better) | $3,157.66 | $5,324.10 | +68.6% GPT-6 Astra (Max) is 68.6% more expensive |
| End-to-end time (lower is better) | 11.25s | 388.52s | +3353.5% GPT-6 Astra (Max) is 3353.5% slower |
| Price per 1M tokens (in / out) | $10.0 / $50.0 | $10.0 / $50.0 | |
| Input modalities | Text, Image | Text, Image |
GPT-6 Astra (Max) vs Claude Fable 5.1 (Low, Default Fallback): 12.6% more intelligence, 68.6% more cost to run the AA benchmark, and 3353.5% slower end-to-end.
Today's Pareto frontier
Against the frontier
- Claude Fable 5.1 (Low, Default Fallback) is off the frontier: at the same or lower cost, Kimi K3.1 Pro scores 55.10 for $3117.
- GPT-6 Astra (Max) 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 (Low, Default Fallback)GPT-6 Astra (Max)Today's Pareto frontierEvery other model
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