LongCat 2.5 Preview vs KAT-Coder-Pro V1
KAT-Coder-Pro V1 is cheaper on output tokens, while LongCat 2.5 Preview offers a larger context window. Choose LongCat 2.5 Preview or KAT-Coder-Pro V1 based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | LongCat 2.5 Preview | KAT-Coder-Pro V1 |
|---|---|---|
| Provider | NanoGPT | Vercel AI Gateway |
| Input / 1M tokens | $0.75 | $0.30 |
| Output / 1M tokens | $2.95 | $1.20 |
| Context window | 1M | 256K |
| Parameters | — | — |
| Open weights | No | No |
| Released | Sep 2026 | Nov 2025 |
| LMArena WebDev Elo score | — | 1256 |
FAQ
Is LongCat 2.5 Preview or KAT-Coder-Pro V1 cheaper?
KAT-Coder-Pro V1 is cheaper on output tokens ($1.20 vs $2.95 per 1M).
Which has the larger context window, LongCat 2.5 Preview or KAT-Coder-Pro V1?
LongCat 2.5 Preview has the larger context window (1M tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.