Model index
Tencent Hy·Hunyuan / Hy

Hy4

Tencent Hunyuan’s Hy4 general-release model supports image understanding, tool use, and long-horizon tasks; its TokenHub model ID is `hy4` with a 1M context.

CurrentLanguageReasoningAgentMultimodal

Tencent Hunyuan formally released Hy4 on 2026-11-03. Tencent Cloud TokenHub added the GA API on 2026-11-04 under model ID `hy4`; the same catalog continues to list the separate preview ID `hy4-preview`. API ID and capabilities reflect the current official catalog; GA weight availability and license are not specified there.

MODEL NUMBER199
First public date
2026-11-03
Organization
Tencent Hy
Family
Hunyuan / Hy
01

Specifications

Only published specifications are shown.

Context
1,000,000 tokens↗
Maximum input
960,000 tokens↗
Maximum output
64,000 tokens↗
Input modalities
Text · Image↗
Status
Current↗
02

Overview

Release dates

— Tencent Hunyuan’s official Research feed dates the Hy4 formal release to 2026-11-03. The originator previewed it for long-horizon productivity and first-time visual understanding; GA parameter count, weights, and license are not disclosed. ↗ — Tencent Cloud’s official TokenHub product update dates API support for Hy4 to 2026-11-04 under model ID `hy4`. This API-availability stage is recorded separately from the model release on November 3. ↗

Why it mattered

Hy4 is Tencent Hunyuan’s flagship language model for long-horizon productivity and agentic work. The official catalog lists the formal model separately from the still-available Hy4 preview, with a distinct API ID and image understanding. The archive therefore keeps separate model identities and does not transfer the preview’s weights or license to GA.

03

Specifications alongside predecessor

Compared with Hy4 preview ↗

PreviousHy4 preview770B · 1M ctx
CurrentHy4— · 1M ctx
04

Architecture & capabilities

Model capabilities

Deep reasoningTool useLong-horizon agentNative vision
05

Release history

General release

Tencent Hunyuan’s official Research feed dates the Hy4 formal release to 2026-11-03. The originator previewed it for long-horizon productivity and first-time visual understanding; GA parameter count, weights, and license are not disclosed.

View source
API launch

Tencent Cloud’s official TokenHub product update dates API support for Hy4 to 2026-11-04 under model ID `hy4`. This API-availability stage is recorded separately from the model release on November 3.

View source
06

Related models

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07

Sources

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