GPT-5.6 Luna (Medium) vs Solar Mini 4
Which is better for the money: GPT-5.6 Luna (Medium) by OpenAI or Solar Mini 4 by Upstage? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-25.
Clear winner
Verdict
Pick GPT-5.6 Luna (Medium)
Solar Mini 4 vs GPT-5.6 Luna (Medium): 3.6% less intelligence, 1032.7% more cost to run the AA benchmark, and 278.1% slower end-to-end.
| Metric | GPT-5.6 Luna (Medium) | Solar Mini 4 | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 25.0 | 24.1 | −3.6% Solar Mini 4 is 3.6% less intelligent |
| Total AA cost (lower is better) | $44.32 | $502.02 | +1032.7% Solar Mini 4 is 11× more expensive |
| End-to-end time (lower is better) | 6.11s | 23.10s | +278.1% Solar Mini 4 is 278.1% slower |
| Price per 1M tokens (in / out) | $0.20 / $1.20 | $0.10 / $0.40 | |
| Input modalities | Text, Image | Text |
Today's Pareto frontier
Against the frontier
- GPT-5.6 Luna (Medium) is off the frontier: at the same or lower cost, GPT-6 Luna (Medium) scores 29.90 for $31.2.
- 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 Luna (Medium)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-luna-medium/solar-mini4 · Markdown: /api/v1/compare/gpt-5-6-luna-medium/solar-mini4?format=md · llms.txt · agent skill