The facts
Tencent announced the Hy4 model on 4 November, describing visual understanding, long-context comprehension and long-horizon agent tasks as new or improved capabilities. [1][2]
Tencent Cloud’s TokenHub guide, updated on 4 November, lists hy4 as a supported model in its chat-completions API. [3]
Tencent said it planned to release Hy4’s model weights and system card in the coming days; the announcement did not provide a release date or licence. [1][2]
Tencent’s launch materials describe Hy4’s performance as among the strongest open-source models; those are company claims, not independent benchmark findings. [1][2]
The South China Morning Post reported that Tencent acknowledged Hy4 continued to trail top closed-source models on some internal benchmark tasks. [2]
Still unconfirmed
- The release date and licence for the official Hy4 model weights and system card are unknown.
- Independent benchmark performance for the released Hy4 version was not established in the opened sources.
Sources
References support the numbered facts above. Source checks: 4 Nov 2026, 15:00 UTC.
Tencent’s release and Cloud documentation establish its product announcement and current hosted API listing. SCMP provides independent reporting; self-reported benchmark claims are attributed, weights remain prospective, and no independent performance result is claimed.
- Tencent Launches Hy4, Joining the Ranks of the World’s Leading Open-Source AI Models
Tencent via PR Newswire APAC · Primary source · 4 Nov 2026
Opened Tencent’s 4 November release carried by PR Newswire. It describes the model launch, lists planned weights/system-card publication for the coming days, and makes company performance claims.
- Tencent unveils Hy4 as open-weight AI race with DeepSeek, Z.ai and Alibaba heats up
South China Morning Post · Reporting · 4 Nov 2026
Opened the independent report earlier in this review. It discusses Hy4’s visual and agent functions and reports Tencent acknowledged a remaining gap to top closed-source models on internal tasks. A later retrieval attempt was inaccessible.
- Hunyuan API guide for TokenHub
Tencent Cloud · Primary source · 4 Nov 2026
Opened Tencent Cloud API documentation updated 4 November; it lists model identifier hy4 for TokenHub API requests.