gpt-oss-20b (High) vs LongCat 2.0
Which is better for the money: gpt-oss-20b (High) 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
LongCat 2.0 scores 10.1 points higher (19.1 vs 9.0) but costs 19× as much to run the benchmark ($545 vs $28.8; premium vs budget cost classes). They are not alternatives at one budget: pick LongCat 2.0 when you need intelligence above 9.0, and gpt-oss-20b (High) when 9.0 is enough.
| Metric | gpt-oss-20b (High) | LongCat 2.0 | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 9.0 | 19.1 | +112.2% LongCat 2.0 is 2.1× more intelligent |
| Total AA cost (lower is better) | $28.81 | $544.74 | +1790.8% LongCat 2.0 is 19× more expensive |
| End-to-end time (lower is better) | 16.48s | 35.69s | +116.6% LongCat 2.0 is 116.6% slower |
| Price per 1M tokens (in / out) | $0.05 / $0.22 | $0.75 / $2.95 | |
| Input modalities | Text | Text |
LongCat 2.0 vs gpt-oss-20b (High): 112.2% more intelligence, 1790.8% more cost to run the AA benchmark, and 116.6% slower end-to-end.
Today's Pareto frontier
Against the frontier
- gpt-oss-20b (High) is off the frontier: at the same or lower cost, GPT-6 Luna (Low) scores 21.50 for $10.6.
- LongCat 2.0 is off the frontier: at the same or lower cost, GPT-6.1 Sol (High) scores 50.20 for $521.
gpt-oss-20b (High)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-oss-20b/longcat-2-0 · Markdown: /api/v1/compare/gpt-oss-20b/longcat-2-0?format=md · llms.txt · agent skill