# Hy3

> **TL;DR.** Hy3 is Tencent Hunyuan's flagship open-weight large language model, a 295-billion-parameter Mixture-of-Experts system with 21B active parameters per token, a 256K context window, and Apache 2.

- **Category:** AI / Models / Open-Weight LLMs
- **Stage:** validating
- **Age:** 76 days
- **Origin date:** 2026-04-23
- **First detected:** 2026-07-07
- **Canonical URL:** https://earlyterms.com/term/hy3
- **Sources:** 7 primary URLs

## Definition

Hy3 is Tencent Hunyuan's flagship open-weight large language model, a 295-billion-parameter Mixture-of-Experts system with 21B active parameters per token, a 256K context window, and Apache 2.0 licensing built for agentic reasoning, tool use, and coding.

Tencent shipped the [Hy3 preview](https://github.com/Tencent-Hunyuan/Hy3-preview) on April 23, 2026, then followed with the [full general-availability release on July 6](https://www.tencent.com/en-us/articles/2202386.html), after collecting feedback from more than 50 internal product teams that cut hallucinations from 12.5% to 5.4% and lifted EU, UK, and South Korea license restrictions previously blocking deployment.

## Analogy

Think of Hy3 as a huge factory where only the relevant 21B-parameter shift clocks in per token, not the whole 295B workforce.

## Why it's emerging now

Tencent's July 6, 2026 general-availability release turned Hy3 from a mysterious model quietly topping OpenRouter's usage charts into a named, benchmarked rival to GLM-5.2 and DeepSeek — Apache 2.0 licensed, hallucination rate cut in half, and EU/UK/South Korea restrictions lifted for the first time.

## Related terms

- *competitor:* GLM-5.2
- *competitor:* GLM-5.1
- *competitor:* DeepSeek V4 Pro
- *competitor:* DeepSeek V4
- *competitor:* Kimi K2.6
- *competitor:* Qwen3.6
- *competitor:* MiniMax M3
- *competitor:* GPT-5.5
- *competitor:* Claude Opus 4.7
- *related:* Managed Agents
- *parent:* Mixture-of-Experts

## Sources

1. [Tencent — Tencent Hunyuan Officially Releases Hy3 (Jul 6, 2026)](https://www.tencent.com/en-us/articles/2202386.html)
2. [Tencent — Tencent Unveils Hy3 Preview (Apr 23, 2026)](https://www.tencent.com/en-us/articles/2202320.html)
3. [VentureBeat — Apache-licensed Hy3 takes on GLM-5.2 at half the size](https://venturebeat.com/technology/tencents-apache-licensed-hy3-takes-on-glm-5-2-at-half-the-size-and-wins-everywhere-except-coding)
4. [Hacker News — The mysterious Hy3 LLM is topping OpenRouter Model Rankings](https://news.ycombinator.com/item?id=48317294)
5. [GitHub — Tencent-Hunyuan/Hy3](https://github.com/Tencent-Hunyuan/Hy3)
6. [Hugging Face — tencent/Hy3 model card](https://huggingface.co/tencent/Hy3)
7. [MarkTechPost — Tencent Releases Hy3: An Open 295B MoE Model](https://www.marktechpost.com/2026/07/06/tencent-releases-hy3-open-295b-moe-model/)

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_Generated by EarlyTerms · https://earlyterms.com/term/hy3_