Claude Sonnet 5 (Low) vs Solar Pro 4
Which is better for the money: Claude Sonnet 5 (Low) 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.
Trade-off
Verdict
Depends on your budget
Solar Pro 4 scores 2.3 points higher (26.6 vs 24.3) but costs 1.1× as much to run the benchmark ($737 vs $653; both premium class). Pick Solar Pro 4 when the extra intelligence is worth the premium, otherwise Claude Sonnet 5 (Low).
| Metric | Claude Sonnet 5 (Low) | Solar Pro 4 | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 24.3 | 26.6 | +9.5% Solar Pro 4 is 9.5% more intelligent |
| Total AA cost (lower is better) | $652.70 | $736.82 | +12.9% Solar Pro 4 is 12.9% more expensive |
| End-to-end time (lower is better) | 8.29s | Not reported | — not comparable |
| Price per 1M tokens (in / out) | $2.00 / $10.0 | $0.30 / $1.20 | |
| Input modalities | Text, Image | Text |
Solar Pro 4 vs Claude Sonnet 5 (Low): 9.5% more intelligence, 12.9% more cost to run the AA benchmark, and end-to-end time not fully reported.
Today's Pareto frontier
Against the frontier
- Claude Sonnet 5 (Low) 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 (Low)Solar Pro 4Today'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/claude-sonnet-5-low/solar-pro4 · Markdown: /api/v1/compare/claude-sonnet-5-low/solar-pro4?format=md · llms.txt · agent skill