Tencent Launches Hy4, One of the Leading Open-Source AI Models
Tencent announced Tencent Hy4, its latest large language model, which it says ranks among the world's leading open-source AI models.
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Tencent announced Tencent Hy4, its latest large language model, which it says ranks among the world's leading open-source AI models. The company says it plans to release model weights and system cards in the coming days, and that Hy4 adds visual understanding, computer-use capabilities, and improvements in instruction following, long-context comprehension, and agentic tasks. Tencent reports internal benchmark gains over Hy4 Preview, including a hallucination rate falling from 12.95% to 7.2%. Pricing is stated as unchanged from the preview.
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Source claims not independently checked; the benchmark results are Tencent's own internal or partner evaluations, and the model weights had not yet been released at the time of the announcement.
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Source claims not independently checked; the benchmark results are Tencent's own internal or partner evaluations, and the model weights had not yet been released at the time of the announcement.
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Tencent says Hy4 is the first in its line to include visual understanding and computer-use capabilities for CLI and GUI interaction.
Source: tencent.com ↗Stored source-based brief · key point 1 · AINewsIQ paraphraseIn a blind financial evaluation with 213 professionals, Tencent reports Hy4 scored 3.04, above DeepSeek-V4.1-Flash-1017 at 2.97.
Source: tencent.com ↗Stored source-based brief · key point 2 · AINewsIQ paraphraseTencent reports internal hallucination rate fell from 12.95% in Hy4 Preview to 7.2%.
Source: tencent.com ↗Stored source-based brief · key point 3 · AINewsIQ paraphraseTencent states Hy4 pricing is about US$0.90 per million input tokens and US$2.70 per million output tokens.
Source: tencent.com ↗Stored source-based brief · key point 4 · AINewsIQ paraphraseLimits from the stored brief
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Why this may matter
A widely available open-weight model with computer-use and visual capabilities could broaden what developers build locally and on cloud platforms. Tencent's safety claims about cybersecurity and biosafety would matter once weights and system cards are published for outside review.
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Source claims not independently checked; the benchmark results are Tencent's own internal or partner evaluations, and the model weights had not yet been released at the time of the announcement.
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