When was Hy4 preview released?

Hy4 preview was released on August 28, 2026 by Tencent. This is the official Hy4 preview release date tracked on LLM Stats.

How big is Hy4 preview?

Hy4 preview has 770 billion parameters. It ships as an open-weight model, so you can download and run it on your own hardware.

Who created Hy4 preview?

Hy4 preview was created by Tencent.

What is the license for Hy4 preview?

Hy4 preview is released under the Apache 2.0 license. This is an open-source / open-weight license that permits self-hosting.

Where is the Hy4 preview paper or technical report?

Hy4 preview has a paper or technical report available at https://huggingface.co/tencent/Hy4-preview. Use that source for architecture, training, release and evaluation details.

What models should I compare Hy4 preview against?

Common Hy4 preview comparisons include Hy4 preview vs Gemini 3 Pro, Hy4 preview vs Claude Mythos Preview, Hy4 preview vs Qwen3.7 Max. Compare them side by side for benchmark scores, pricing, context window, latency and API availability.

Hy4 preview API Pricing, Context Window & Benchmarks

Name: Hy4 preview
Author: Tencent

Hy4 preview: API Pricing, Context Window & Benchmarks

Hy4 preview is a language model from Tencent, released in August 2026.

Hy4 preview is a new-generation Mixture-of-Experts (MoE) flagship model from the Tencent Hy Team (released 2026-08-28). It has 770B total parameters with 49B activated per token, plus a native MTP layer (10B total / 0.7B activated) for

Hy4 preview benchmarks

Capability tiers

Standing within each category, adjusted for leaderboard depth.

Real tasks performance

High-confidence performance for Hy4 preview across real-world prompt categories. Only 95% intervals at most 4 points wide are shown.

Performance by conversation depth

How Hy4 preview holds up as conversations get longer.

Quality Tracker

Hy4 preview Performance Across Datasets

Scores sourced from the model's scorecard, paper, or official blog posts

llm-stats.com - Mon Aug 31 2026

Notice missing or incorrect data?

Hy4 preview model size

Hy4 preview has 770 billion parameters. See how it compares to other models in the same parameter range.

Parameters

770BMoE

Frontier (200B+)

770B

1B7B70B405B

Hy4 preview latency

Hy4 preview time to first token, sustained output throughput, and failed-request rate from live API traffic over the trailing 7 days.

Hy4 preview examples

Recent arena outputs from Hy4 preview, picked from the highest-ranked matchups.

Hy4 preview license

Hy4 preview is released under the Apache 2.0 license, which permits commercial use, has 770.0B parameters.

License: Apache 2.0; Commercial use allowed
Parameters: 770.0B

Apache License 2.0 - allows commercial use

Hy4 preview resources

Official sources for Hy4 preview: official launch post, source repository.

Hy4 preview vs other models

The most-compared alternatives to Hy4 preview are Gemini 3 Pro, Claude Mythos Preview, Qwen3.7 Max. Open any pair side-by-side for benchmarks, pricing, context, and latency.