GPT-5.6 Terra (Medium) vs Solar Pro 4
Which is better for the money: GPT-5.6 Terra (Medium) by OpenAI or Solar Pro 4 by Upstage? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-24.
Clear winner
Verdict
Pick GPT-5.6 Terra (Medium)
Solar Pro 4 vs GPT-5.6 Terra (Medium): 11.6% less intelligence, 65.0% more cost to run the AA benchmark, and end-to-end time not fully reported.
| Metric | GPT-5.6 Terra (Medium) | Solar Pro 4 | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 30.1 | 26.6 | −11.6% Solar Pro 4 is 11.6% less intelligent |
| Total AA cost (lower is better) | $446.53 | $736.82 | +65.0% Solar Pro 4 is 65.0% more expensive |
| End-to-end time (lower is better) | 5.85s | Not reported | — not comparable |
| Price per 1M tokens (in / out) | $2.00 / $12.0 | $0.30 / $1.20 | |
| Input modalities | Text, Image | Text |
Today's Pareto frontier
Against the frontier
- GPT-5.6 Terra (Medium) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Medium) scores 47.80 for $361.
- 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 Terra (Medium)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/gpt-5-6-terra-medium/solar-pro4 · Markdown: /api/v1/compare/gpt-5-6-terra-medium/solar-pro4?format=md · llms.txt · agent skill