Claude Sonnet 5.5 (Xhigh, Default Fallback) vs Solar Pro 3
Which is better for the money: Claude Sonnet 5.5 (Xhigh, 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 Sonnet 5.5 (Xhigh, Default Fallb… scores 44.1 points higher (51.9 vs 7.8) but costs 14× as much to run the benchmark ($2177 vs $159; flagship vs mid-range cost classes). They are not alternatives at one budget: pick Claude Sonnet 5.5 (Xhigh, Default Fallb… when you need intelligence above 7.8, and Solar Pro 3 when 7.8 is enough.
| Metric | Claude Sonnet 5.5 (Xhigh, Default Fallback) | Solar Pro 3 | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 51.9 | 7.8 | −85.0% Solar Pro 3 is 85.0% less intelligent |
| Total AA cost (lower is better) | $2,176.82 | $159.22 | −92.7% Solar Pro 3 is 92.7% cheaper |
| End-to-end time (lower is better) | 33.08s | 18.71s | −43.4% Solar Pro 3 is 43.4% faster |
| Price per 1M tokens (in / out) | $2.00 / $10.0 | $0.15 / $0.60 | |
| Input modalities | Text, Image | Text |
Solar Pro 3 vs Claude Sonnet 5.5 (Xhigh, Default Fallback): 85.0% less intelligence, 92.7% less cost to run the AA benchmark, and 43.4% faster end-to-end.
Today's Pareto frontier
Against the frontier
- Claude Sonnet 5.5 (Xhigh, Default Fallback) is off the frontier: at the same or lower cost, Claude Opus 5.5 (High, Default Fallback) scores 53.60 for $2172.
- Solar Pro 3 is off the frontier: at the same or lower cost, Claude Haiku 5.5 (Xhigh) scores 41.20 for $158.
Claude Sonnet 5.5 (Xhigh, Default Fallback)Solar Pro 3Today's Pareto frontierEvery other model
Matchup
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