GPT-6 Astra (Medium) vs Solar Pro 4
Which is better for the money: GPT-6 Astra (Medium) by OpenAI or Solar Pro 4 by Upstage? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-25.
Trade-off
Verdict
Depends on your budget
GPT-6 Astra (Medium) scores 23.0 points higher (49.6 vs 26.6) but costs 3.3× as much to run the benchmark ($2434 vs $737; flagship vs premium cost classes). They are not alternatives at one budget: pick GPT-6 Astra (Medium) when you need intelligence above 26.6, and Solar Pro 4 when 26.6 is enough.
| Metric | GPT-6 Astra (Medium) | Solar Pro 4 | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 49.6 | 26.6 | −46.4% Solar Pro 4 is 46.4% less intelligent |
| Total AA cost (lower is better) | $2,434.12 | $736.82 | −69.7% Solar Pro 4 is 69.7% cheaper |
| End-to-end time (lower is better) | 13.84s | Not reported | — not comparable |
| Price per 1M tokens (in / out) | $10.0 / $50.0 | $0.30 / $1.20 | |
| Input modalities | Text, Image | Text |
Solar Pro 4 vs GPT-6 Astra (Medium): 46.4% less intelligence, 69.7% less cost to run the AA benchmark, and end-to-end time not fully reported.
Today's Pareto frontier
Against the frontier
- GPT-6 Astra (Medium) is off the frontier: at the same or lower cost, Claude Opus 5.5 (High, Default Fallback) scores 53.60 for $2172.
- Solar Pro 4 is off the frontier: at the same or lower cost, GPT-6.1 Sol (Xhigh) scores 51.00 for $662.
GPT-6 Astra (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-6-astra-medium/solar-pro4 · Markdown: /api/v1/compare/gpt-6-astra-medium/solar-pro4?format=md · llms.txt · agent skill