Claude Fable 5.1 (Medium, Default Fallback) vs Solar Pro 3
Which is better for the money: Claude Fable 5.1 (Medium, Default Fallback) by Anthropic or Solar Pro 3 by Upstage? 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 5.1 (Medium, Default Fallb… scores 41.1 points higher (48.9 vs 7.8) but costs 25× as much to run the benchmark ($3983 vs $159; flagship vs mid-range cost classes). They are not alternatives at one budget: pick Claude Fable 5.1 (Medium, Default Fallb… when you need intelligence above 7.8, and Solar Pro 3 when 7.8 is enough.
| Metric | Claude Fable 5.1 (Medium, Default Fallback) | Solar Pro 3 | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 48.9 | 7.8 | −84.0% Solar Pro 3 is 84.0% less intelligent |
| Total AA cost (lower is better) | $3,983.28 | $159.22 | −96.0% Solar Pro 3 is 96.0% cheaper |
| End-to-end time (lower is better) | 14.35s | 18.89s | +31.6% Solar Pro 3 is 31.6% slower |
| Price per 1M tokens (in / out) | $10.0 / $50.0 | $0.15 / $0.60 | |
| Input modalities | Text, Image | Text |
Solar Pro 3 vs Claude Fable 5.1 (Medium, Default Fallback): 84.0% less intelligence, 96.0% less cost to run the AA benchmark, and 31.6% slower end-to-end.
Today's Pareto frontier
Against the frontier
- Claude Fable 5.1 (Medium, Default Fallback) is off the frontier: at the same or lower cost, Kimi K3.1 Pro scores 55.10 for $3117.
- Solar Pro 3 is off the frontier: at the same or lower cost, Claude Haiku 5.5 (Xhigh) scores 41.20 for $158.
Claude Fable 5.1 (Medium, Default Fallback)Solar Pro 3Today's Pareto frontierEvery other model
Matchup
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