Claude Fable 5.2 (Xhigh, Default Fallback) vs GPT-5.6 Terra (Max)
Which is better for the money: Claude Fable 5.2 (Xhigh, Default Fallback) by Anthropic or GPT-5.6 Terra (Max) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-11-10.
Trade-off
Verdict
Depends on your budget
Claude Fable 5.2 (Xhigh, Default Fallba… scores 29.9 points higher (62.2 vs 32.3) but costs 3.6× as much to run the benchmark ($11742 vs $3250; both flagship class). They are not alternatives at one budget: pick Claude Fable 5.2 (Xhigh, Default Fallba… when you need intelligence above 32.3, and GPT-5.6 Terra (Max) when 32.3 is enough.
| Metric | Claude Fable 5.2 (Xhigh, Default Fallback) | GPT-5.6 Terra (Max) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 62.2 | 32.3 | −48.1% GPT-5.6 Terra (Max) is 48.1% less intelligent |
| Total AA cost (lower is better) | $11,741.62 | $3,250.14 | −72.3% GPT-5.6 Terra (Max) is 72.3% cheaper |
| End-to-end time (lower is better) | 102.03s | 112.23s | +10.0% GPT-5.6 Terra (Max) is 10.0% slower |
| Price per 1M tokens (in / out) | $8.00 / $40.0 | $2.00 / $12.0 | |
| Input modalities | Text, Image | Text, Image |
GPT-5.6 Terra (Max) vs Claude Fable 5.2 (Xhigh, Default Fallback): 48.1% less intelligence, 72.3% less cost to run the AA benchmark, and 10.0% slower end-to-end.
Today's Pareto frontier
Against the frontier
- Claude Fable 5.2 (Xhigh, Default Fallback) is on today's frontier: nothing is both smarter and cheaper.
- GPT-5.6 Terra (Max) is off the frontier: at the same or lower cost, GPT-6 Astra (High) scores 54.80 for $3204.
Claude Fable 5.2 (Xhigh, Default Fallback)GPT-5.6 Terra (Max)Today's Pareto frontierEvery other model
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