$ diff hy4-preview longcat-2-0
Hy4 preview vs LongCat-2.0
Values come from Hy4 preview 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.
TencentHy4 preview
- context
- 1M
- weights
- open
- $/M in
- $0.834
- $/M out
- $2.501
- context
- 1M
- weights
- open
- $/M in
- $0.3
- $/M out
- $1.2
What actually differs
- Context window
- Identical — both accept 1M tokens, so context length is not a reason to pick either.
- Input price
- LongCat-2.0 at $0.3/M against $0.834/M — 2.8× 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 $2.501/M — 2.1× cheaper to generate. Output dominates the bill on most agentic workloads, where the model writes far more than it reads.
- Weights
- Both publish weights — Hy4 preview under Apache-2.0, LongCat-2.0 under MIT (commercially permissive). Check the licences rather than assuming they permit the same commercial use.
- Recency
- Hy4 preview shipped 59 days after LongCat-2.0 (2026-08-28 vs 2026-06-30).
Full spec
| Attribute | Hy4 preview | LongCat-2.0 |
|---|---|---|
| Developer | Tencent | Meituan |
| Released | 2026-08-28 | 2026-06-30 |
| Context window | over 1,000,000 | 1 million tokens (LongCat Sparse Attention / LSA) |
| Pricing | $0.834/M input · $2.501/M output | $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 | Apache-2.0 | MIT (commercially permissive) |
| Availability | Hugging Face (BF16 + FP8), ModelScope, GitCode, CNB, Tencent Cloud TokenHub, OpenRouter, WorkBuddy, CodeBuddy, Yuanbao, ima | Open-sourced 2026-06-30; previously served on OpenRouter under the codename "Owl Alpha" |