$ diff kimi-k3-1-pro longcat-2-0
Kimi K3.1 Pro vs LongCat-2.0
Values come from Kimi K3.1 Pro and LongCat-2.0, where each is cited to its source. This page states no benchmark result and ranks neither model — it puts two published specifications next to each other. Where a lab has not published a figure, the row says so rather than guessing.
Moonshot AIKimi K3.1 Pro
- context
- 1.0M
- weights
- —
- $/M in
- $2
- $/M out
- $10
- context
- 1M
- weights
- open
- $/M in
- $0.3
- $/M out
- $1.2
What actually differs
- Context window
- Kimi K3.1 Pro takes 1.0M against 1M — modestly more room in a single request.
- Input price
- LongCat-2.0 at $0.3/M against $2/M — 6.7× cheaper to feed. Standard rates: one of these labs also quotes a lower cached-input tier, which applies only when a prefix is reused — see the full spec below.
- Output price
- LongCat-2.0 at $1.2/M against $10/M — 8.3× cheaper to generate. Output dominates the bill on most agentic workloads, where the model writes far more than it reads.
- Recency
- Kimi K3.1 Pro shipped 115 days after LongCat-2.0 (2026-10-23 vs 2026-06-30).
Full spec
| Attribute | Kimi K3.1 Pro | LongCat-2.0 |
|---|---|---|
| Developer | Moonshot AI | Meituan |
| Released | 2026-10-23 | 2026-06-30 |
| Context window | 1,048,576 tokens ([source](../../sources/blogs/moonshot-2026-10-24-k3-pricing.md)) | 1 million tokens (LongCat Sparse Attention / LSA) |
| Pricing | $2.00/MTok input · $10.00/MTok output · $0.20/MTok cached input; cache writes $2.00/MTok (5m), $4.00/MTok (1h); excludes taxes ([source](../../sources/blogs/moonshot-2026-10-24-k3-pricing.md)) | $0.30/M input · $1.20/M output ($0.006/M cached input) — OpenRouter catalogue, read 2026-07-28. Open weights, so this is hosted-inference pricing rather than a licence fee. |
| License | not recorded | MIT (commercially permissive) |
| Availability | Kimi.ai, mobile apps, Kimi Work, Kimi Code, Kimi API; enterprise access off by default at launch ([source](../../sources/blogs/moonshot-2026-10-23-kimi-k3-1-pro.md)) | Open-sourced 2026-06-30; previously served on OpenRouter under the codename "Owl Alpha" |