Tencent launches full Hy4 model with visual and computer use

Tencent released the full version of its Hy4 large language model on Nov. 4, 2026, at CNY 6 per million input tokens and CNY 18 per million output tokens. The Nov. 4 launch added visual understanding and computer use to the model Tencent previewed in August.

Tencent said the full version uses expanded pretraining and post-training data. The company said Hy4 can process images, reason over charts and complete mathematical visual tasks. The company also said Hy4 supports command-line and graphical interfaces.

What changed from the August preview?

TNGlobal reported that Tencent had open-sourced the preview, which had 770 billion total parameters, 49 billion active parameters and a context window exceeding 1 million tokens. Tencent did not disclose a revised parameter count or context limit for the full release.

TNGlobal’s report places the Nov. 4 full release roughly three months after the August preview. Tencent said it would publish the full model’s weights and system card later.

For now, that promise leaves direct access to the full weights pending. Tencent’s announced distribution strategy instead runs through hosted services and application programming interfaces.

How did Tencent train Hy4 for computer use?

Tencent said it conducted specialized training for professional software, including Blender and computer-aided design applications. The company also said Hy4 received training on longer jobs requiring work across multiple applications.

Tencent did not provide independently verified measurements of those computer-use capabilities. TechNode said the release came as Chinese developers competed to expand open-model capabilities for enterprise and consumer applications. The capabilities described by Tencent extend Hy4 into visual analysis and multi-application work rather than text alone.

Where can developers access Hy4?

Tencent said Hy4 is available through Tencent Cloud TokenHub, WorkBuddy, CodeBuddy, Yuanbao, WeCom’s AI assistant and ima. Tencent said third-party application programming interface access is available through OpenRouter, Hermes and OpenCode.

Tencent is also integrating Hy4 into QQ, Honor of Kings, Game of Peace, WeRead and Tencent News. Those six first-party services and three third-party API routes give developers alternatives to a single Tencent distribution channel.

What did the finance evaluation show?

Tencent reported that 213 finance professionals evaluated Hy4 on 579 tasks. External financial institutions supplied 153 of the 213 participants, nearly 72% of the group.

In Tencent’s evaluation, Hy4 received an average score of 3.04, compared with 2.97 for DeepSeek-V4.1-Flash-1017 and 2.68 each for Kimi K3.1 Pro and GLM-5.3. Its margin over DeepSeek was 0.07 points, while its lead over Kimi and GLM was 0.36. The results were organized or reported by Tencent and have not been independently verified.

What safety controls did Tencent apply?

Tencent said it trained Hy4 with defensive cybersecurity material related to proof-of-concept generation and vulnerability remediation. It excluded offensive material on exploitation, reverse engineering and penetration testing. Tencent’s release also emphasizes biological-safety controls.

Internal specialists from Tencent’s Xuanwu Lab and Keen Security Lab assessed cryptographic analysis, binary deobfuscation and vulnerability exploitation. Tencent said the tests “did not identify elevated offensive risks.”

Reuters reported that the findings “were based on the company’s internal testing.” Reuters also reported that Tencent plans to publish the model weights and a report describing the safety assessments.

What will Hy4 cost?

Tencent retained the preview’s pricing at CNY 6 per million input tokens, CNY 18 per million output tokens and CNY 0.30 per million cached input tokens. The company also plans a lower-cost Hy4 Flash version, without announcing its price or launch date.

At those rates, output tokens cost three times as much as input tokens, while cached input costs one-twentieth as much. Tencent’s next disclosures—the weights, system card, safety report and Flash terms—will show whether the November launch can match its technical and pricing claims.