GPT-5.6 Luna (Low) vs Ministral 3 3B
Which is better for the money: GPT-5.6 Luna (Low) by OpenAI or Ministral 3 3B by Mistral? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-24.
Trade-off
Verdict
Depends on your budget
GPT-5.6 Luna (Low) scores 16.2 points higher (21.0 vs 4.8) but costs 2.2× as much to run the benchmark ($27.0 vs $12.2; both budget class). Pick GPT-5.6 Luna (Low) when the extra intelligence is worth the premium, otherwise Ministral 3 3B.
| Metric | GPT-5.6 Luna (Low) | Ministral 3 3B | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 21.0 | 4.8 | −77.1% Ministral 3 3B is 77.1% less intelligent |
| Total AA cost (lower is better) | $27.02 | $12.23 | −54.7% Ministral 3 3B is 54.7% cheaper |
| End-to-end time (lower is better) | 5.67s | 3.07s | −45.9% Ministral 3 3B is 45.9% faster |
| Price per 1M tokens (in / out) | $0.20 / $1.20 | $0.10 / $0.10 | |
| Input modalities | Text, Image | Text, Image |
Ministral 3 3B vs GPT-5.6 Luna (Low): 77.1% less intelligence, 54.7% less cost to run the AA benchmark, and 45.9% faster end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-5.6 Luna (Low) is off the frontier: at the same or lower cost, GPT-6 Luna (Low) scores 21.50 for $10.6.
- Ministral 3 3B is off the frontier: at the same or lower cost, GPT-6 Luna (Low) scores 21.50 for $10.6.
GPT-5.6 Luna (Low)Ministral 3 3BToday's Pareto frontierOpen-weights frontierEvery other model
Matchup
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