GPT-5.6 Sol (Max) vs Solar Pro 4
Which is better for the money: GPT-5.6 Sol (Max) by OpenAI 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
GPT-5.6 Sol (Max) scores 20.4 points higher (47.0 vs 26.6) but costs 4.7× as much to run the benchmark ($3465 vs $737; flagship vs premium cost classes). They are not alternatives at one budget: pick GPT-5.6 Sol (Max) when you need intelligence above 26.6, and Solar Pro 4 when 26.6 is enough.
| Metric | GPT-5.6 Sol (Max) | Solar Pro 4 | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 47.0 | 26.6 | −43.4% Solar Pro 4 is 43.4% less intelligent |
| Total AA cost (lower is better) | $3,464.84 | $736.82 | −78.7% Solar Pro 4 is 78.7% cheaper |
| End-to-end time (lower is better) | 92.19s | Not reported | — not comparable |
| Price per 1M tokens (in / out) | $4.00 / $20.0 | $0.30 / $1.20 | |
| Input modalities | Text, Image | Text |
Solar Pro 4 vs GPT-5.6 Sol (Max): 43.4% less intelligence, 78.7% less cost to run the AA benchmark, and end-to-end time not fully reported.
Today's Pareto frontier
Against the frontier
- GPT-5.6 Sol (Max) is off the frontier: at the same or lower cost, Kimi K3.1 Pro scores 55.10 for $3117.
- Solar Pro 4 is off the frontier: at the same or lower cost, GPT-6.1 Sol (Xhigh) scores 51.00 for $662.
GPT-5.6 Sol (Max)Solar Pro 4Today's Pareto frontierEvery other model
Matchup
Compare something else
Agents:
Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gpt-5-6-sol/solar-pro4 · Markdown: /api/v1/compare/gpt-5-6-sol/solar-pro4?format=md · llms.txt · agent skill