GPT-5.6 Sol (Low) vs LongCat 2.0
Which is better for the money: GPT-5.6 Sol (Low) by OpenAI or LongCat 2.0 by LongCat? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-25.
Trade-off
Verdict
Depends on your budget
GPT-5.6 Sol (Low) scores 14.4 points higher (33.5 vs 19.1) but costs 1.2× as much to run the benchmark ($637 vs $545; both premium class). Pick GPT-5.6 Sol (Low) when the extra intelligence is worth the premium, otherwise LongCat 2.0.
| Metric | GPT-5.6 Sol (Low) | LongCat 2.0 | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 33.5 | 19.1 | −43.0% LongCat 2.0 is 43.0% less intelligent |
| Total AA cost (lower is better) | $637.28 | $544.74 | −14.5% LongCat 2.0 is 14.5% cheaper |
| End-to-end time (lower is better) | 8.26s | 37.06s | +348.7% LongCat 2.0 is 348.7% slower |
| Price per 1M tokens (in / out) | $4.00 / $20.0 | $0.75 / $2.95 | |
| Input modalities | Text, Image | Text |
LongCat 2.0 vs GPT-5.6 Sol (Low): 43.0% less intelligence, 14.5% less cost to run the AA benchmark, and 348.7% slower end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-5.6 Sol (Low) is off the frontier: at the same or lower cost, GPT-6.1 Sol (High) scores 50.20 for $521.
- LongCat 2.0 is off the frontier: at the same or lower cost, GPT-6.1 Sol (High) scores 50.20 for $521.
GPT-5.6 Sol (Low)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-5-6-sol-low/longcat-2-0 · Markdown: /api/v1/compare/gpt-5-6-sol-low/longcat-2-0?format=md · llms.txt · agent skill