GPT-5.4 mini (Xhigh) vs GPT-5.6 Luna (Non-reasoning)
Which is better for the money: GPT-5.4 mini (Xhigh) by OpenAI or GPT-5.6 Luna (Non-reasoning) by OpenAI? 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-5.4 mini (Xhigh) scores 8.6 points higher (24.1 vs 15.5) but costs 59× as much to run the benchmark ($1349 vs $23.0; premium vs budget cost classes). They are not alternatives at one budget: pick GPT-5.4 mini (Xhigh) when you need intelligence above 15.5, and GPT-5.6 Luna (Non-reasoning) when 15.5 is enough.
| Metric | GPT-5.4 mini (Xhigh) | GPT-5.6 Luna (Non-reasoning) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 24.1 | 15.5 | −35.7% GPT-5.6 Luna (Non-rea… is 35.7% less intelligent |
| Total AA cost (lower is better) | $1,349.15 | $22.97 | −98.3% GPT-5.6 Luna (Non-rea… is 98.3% cheaper |
| End-to-end time (lower is better) | 129.21s | 5.06s | −96.1% GPT-5.6 Luna (Non-rea… is 96.1% faster |
| Price per 1M tokens (in / out) | $0.75 / $4.50 | $0.20 / $1.20 | |
| Input modalities | Text, Image | Text, Image |
GPT-5.6 Luna (Non-reasoning) vs GPT-5.4 mini (Xhigh): 35.7% less intelligence, 98.3% less cost to run the AA benchmark, and 96.1% faster end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-5.4 mini (Xhigh) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
- GPT-5.6 Luna (Non-reasoning) is off the frontier: at the same or lower cost, GPT-6 Luna (Low) scores 21.50 for $10.6.
GPT-5.4 mini (Xhigh)GPT-5.6 Luna (Non-reasoning)Today's Pareto frontierEvery other model
Matchup
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