Tencent
Tencent Hy4 Preview
Tencent Hy4 Preview is a Tencent model with 1M context, Not verified in / Not verified out per million tokens, last verified September 2, 2026. Open weights: yes. Public-board scores are linked to the publisher; vendor-only figures stay in the watch-out, not on the board.
Tencent Hy4 Preview is Tencent's open-weight (Apache 2.0) flagship — 770B/49B MoE with 1M context, positioned as the open answer to Qwen 3.8 Max.
Catalog record checked September 2, 2026Individual provider fields may change
| Specification | Tencent Hy4 Preview |
|---|---|
| Provider | Tencent |
| Tier | Frontier |
| Context window | 1M |
| Max output | Not verifiedUnverified |
| Input / 1M tokens | Not verifiedUnverified |
| Output / 1M tokens | Not verifiedUnverified |
| Weights | Open |
| Parameters | 770B total / 49B active (MoE) |
| Reasoning levels | Not verifiedUnverified |
| Modalities | text |
| License | Apache 2.0 |
| Released | August 28, 2026 |
Pricing tiers: Open weights (Apache 2.0); no hosted token pricing verified yet — check Tencent Cloud. Adds a 10B/0.7B MTP speculative-decoding layer.
Best for
- Open-weight frontier work
- Long-context
- Self-hosting at scale
Watch out
Source receipts
Catalog figures for this model were checked against the following sources.
- Tencent — Hy4 Preview release (accessed 2026-08-30)
- Hugging Face — tencent/Hy4-preview (accessed 2026-08-30)
Common questions
Tencent Hy4 Preview
Answered from the verified figures on this page rather than general guidance.
What is Tencent Hy4 Preview's context window?
Tencent Hy4 Preview accepts about 1M tokens of context. That only matters if you routinely send very long documents, large codebases, or multi-turn histories that approach that limit.
What is Tencent Hy4 Preview best for?
Tencent Hy4 Preview is a frontier tier from Tencent. It suits open-weight frontier work, long-context, self-hosting at scale. Preview checkpoint; benchmark claims are vendor-reported (blind-test wins over GLM-5.3/Qwen3.8/K3 unverified). No verified hosted pricing.
Can I self-host Tencent Hy4 Preview?
Tencent Hy4 Preview publishes open weights, but self-hosting depends on the licence, hardware footprint, quantisation quality, and serving stack. A hosted API is often cheaper until you have measured throughput and concurrency on your own hardware.