GPT-5.6 Terra (Xhigh) vs Solar Mini 4
Which is better for the money: GPT-5.6 Terra (Xhigh) by OpenAI or Solar Mini 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 (Xhigh) scores 13.9 points higher (38.0 vs 24.1) but costs 2.4× as much to run the benchmark ($1187 vs $502; both premium class). Pick GPT-5.6 Terra (Xhigh) when the extra intelligence is worth the premium, otherwise Solar Mini 4.
| Metric | GPT-5.6 Terra (Xhigh) | Solar Mini 4 | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 38.0 | 24.1 | −36.6% Solar Mini 4 is 36.6% less intelligent |
| Total AA cost (lower is better) | $1,186.77 | $502.02 | −57.7% Solar Mini 4 is 57.7% cheaper |
| End-to-end time (lower is better) | 28.74s | 22.36s | −22.2% Solar Mini 4 is 22.2% faster |
| Price per 1M tokens (in / out) | $2.00 / $12.0 | $0.10 / $0.40 | |
| Input modalities | Text, Image | Text |
Solar Mini 4 vs GPT-5.6 Terra (Xhigh): 36.6% less intelligence, 57.7% less cost to run the AA benchmark, and 22.2% faster end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-5.6 Terra (Xhigh) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
- Solar Mini 4 is off the frontier: at the same or lower cost, GPT-6.1 Sol (Medium) scores 47.80 for $361.
GPT-5.6 Terra (Xhigh)Solar Mini 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-xhigh/solar-mini4 · Markdown: /api/v1/compare/gpt-5-6-terra-xhigh/solar-mini4?format=md · llms.txt · agent skill