GPT-5.5 (Xhigh) vs Solar Pro 3
Which is better for the money: GPT-5.5 (Xhigh) by OpenAI 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
GPT-5.5 (Xhigh) scores 30.6 points higher (38.4 vs 7.8) but costs 33× as much to run the benchmark ($5294 vs $159; flagship vs mid-range cost classes). They are not alternatives at one budget: pick GPT-5.5 (Xhigh) when you need intelligence above 7.8, and Solar Pro 3 when 7.8 is enough.
| Metric | GPT-5.5 (Xhigh) | Solar Pro 3 | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 38.4 | 7.8 | −79.7% Solar Pro 3 is 79.7% less intelligent |
| Total AA cost (lower is better) | $5,294.36 | $159.22 | −97.0% Solar Pro 3 is 97.0% cheaper |
| End-to-end time (lower is better) | 44.76s | 18.89s | −57.8% Solar Pro 3 is 57.8% faster |
| Price per 1M tokens (in / out) | $5.00 / $30.0 | $0.15 / $0.60 | |
| Input modalities | Text, Image | Text |
Solar Pro 3 vs GPT-5.5 (Xhigh): 79.7% less intelligence, 97.0% less cost to run the AA benchmark, and 57.8% faster end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-5.5 (Xhigh) is off the frontier: at the same or lower cost, Claude Opus 5.5 (Xhigh, Default Fallback) scores 56.00 for $4057.
- Solar Pro 3 is off the frontier: at the same or lower cost, Claude Haiku 5.5 (Xhigh) scores 41.20 for $158.
GPT-5.5 (Xhigh)Solar Pro 3Today's Pareto frontierEvery other model
Matchup
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Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gpt-5-5/solar-pro-3 · Markdown: /api/v1/compare/gpt-5-5/solar-pro-3?format=md · llms.txt · agent skill