GPT-6 Luna (Max) vs Mercury 2.5
Which is better for the money: GPT-6 Luna (Max) by OpenAI or Mercury 2.5 by Inception? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-24.
Clear winner
Verdict
Pick GPT-6 Luna (Max)
Mercury 2.5 vs GPT-6 Luna (Max): 67.7% less intelligence, 78.7% more cost to run the AA benchmark, and 94.6% faster end-to-end.
| Metric | GPT-6 Luna (Max) | Mercury 2.5 | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 38.1 | 12.3 | −67.7% Mercury 2.5 is 67.7% less intelligent |
| Total AA cost (lower is better) | $122.05 | $218.11 | +78.7% Mercury 2.5 is 78.7% more expensive |
| End-to-end time (lower is better) | 82.02s | 4.39s | −94.6% Mercury 2.5 is 94.6% faster |
| Price per 1M tokens (in / out) | $0.10 / $0.50 | $0.25 / $0.75 | |
| Input modalities | Text, Image | Text |
Today's Pareto frontier
Against the frontier
- GPT-6 Luna (Max) is on today's frontier: nothing is both smarter and cheaper.
- Mercury 2.5 is off the frontier: at the same or lower cost, MiMo-V2.6-Pro scores 46.30 for $207.
GPT-6 Luna (Max)Mercury 2.5Today'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-luna/mercury-2-5 · Markdown: /api/v1/compare/gpt-6-luna/mercury-2-5?format=md · llms.txt · agent skill