GPT-5.6 Terra (High) vs Solar Pro 4
Which is better for the money: GPT-5.6 Terra (High) by OpenAI or Solar Pro 4 by Upstage? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-26.
Trade-off
Verdict
Depends on your budget
GPT-5.6 Terra (High) scores 7.6 points higher (34.2 vs 26.6) but costs 1.0× as much to run the benchmark ($768 vs $737; both premium class). Pick GPT-5.6 Terra (High) when the extra intelligence is worth the premium, otherwise Solar Pro 4.
| Metric | GPT-5.6 Terra (High) | Solar Pro 4 | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 34.2 | 26.6 | −22.2% Solar Pro 4 is 22.2% less intelligent |
| Total AA cost (lower is better) | $767.78 | $736.82 | −4.0% Solar Pro 4 is 4.0% cheaper |
| End-to-end time (lower is better) | 6.57s | Not reported | — not comparable |
| Price per 1M tokens (in / out) | $2.00 / $12.0 | $0.30 / $1.20 | |
| Input modalities | Text, Image | Text |
Solar Pro 4 vs GPT-5.6 Terra (High): 22.2% less intelligence, 4.0% 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 Terra (High) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Xhigh) scores 51.00 for $662.
- 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 (High)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-terra-high/solar-pro4 · Markdown: /api/v1/compare/gpt-5-6-terra-high/solar-pro4?format=md · llms.txt · agent skill