GPT-6 Luna (Xhigh) vs LongCat 2.0
Which is better for the money: GPT-6 Luna (Xhigh) by OpenAI or LongCat 2.0 by LongCat? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-26.
Clear winner
Verdict
Pick GPT-6 Luna (Xhigh)
LongCat 2.0 vs GPT-6 Luna (Xhigh): 44.8% less intelligence, 715.4% more cost to run the AA benchmark, and 56.7% slower end-to-end.
| Metric | GPT-6 Luna (Xhigh) | LongCat 2.0 | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 34.6 | 19.1 | −44.8% LongCat 2.0 is 44.8% less intelligent |
| Total AA cost (lower is better) | $66.81 | $544.74 | +715.4% LongCat 2.0 is 8.2× more expensive |
| End-to-end time (lower is better) | 23.90s | 37.44s | +56.7% LongCat 2.0 is 56.7% slower |
| Price per 1M tokens (in / out) | $0.10 / $0.50 | $0.75 / $2.95 | |
| Input modalities | Text, Image | Text |
Today's Pareto frontier
Against the frontier
- GPT-6 Luna (Xhigh) is on today's frontier: nothing is both smarter and cheaper.
- LongCat 2.0 is off the frontier: at the same or lower cost, GPT-6.1 Sol (High) scores 50.20 for $521.
GPT-6 Luna (Xhigh)LongCat 2.0Today's Pareto frontierOpen-weights 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-xhigh/longcat-2-0 · Markdown: /api/v1/compare/gpt-6-luna-xhigh/longcat-2-0?format=md · llms.txt · agent skill