Claude Sonnet 5.5 (Medium, Default Fallback) vs Solar Pro 4
Which is better for the money: Claude Sonnet 5.5 (Medium, Default Fallback) by Anthropic or Solar Pro 4 by Upstage? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-25.
Clear winner
Verdict
Pick Claude Sonnet 5.5 (Medium, Default Fallback)
Solar Pro 4 vs Claude Sonnet 5.5 (Medium, Default Fallback): 34.8% less intelligence, 18.4% more cost to run the AA benchmark, and end-to-end time not fully reported.
| Metric | Claude Sonnet 5.5 (Medium, Default Fallback) | Solar Pro 4 | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 40.8 | 26.6 | −34.8% Solar Pro 4 is 34.8% less intelligent |
| Total AA cost (lower is better) | $622.28 | $736.82 | +18.4% Solar Pro 4 is 18.4% more expensive |
| End-to-end time (lower is better) | 5.74s | Not reported | — not comparable |
| Price per 1M tokens (in / out) | $2.00 / $10.0 | $0.30 / $1.20 | |
| Input modalities | Text, Image | Text |
Today's Pareto frontier
Against the frontier
- Claude Sonnet 5.5 (Medium, Default Fallback) is off the frontier: at the same or lower cost, GPT-6.1 Sol (High) scores 50.20 for $521.
- Solar Pro 4 is off the frontier: at the same or lower cost, GPT-6.1 Sol (Xhigh) scores 51.00 for $662.
Claude Sonnet 5.5 (Medium, Default Fallback)Solar Pro 4Today's Pareto frontierEvery other model
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Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/claude-sonnet-5-5-medium/solar-pro4 · Markdown: /api/v1/compare/claude-sonnet-5-5-medium/solar-pro4?format=md · llms.txt · agent skill