Tencent releases the full Hy4 model with vision and computer use, but only through its API, after an open-weight preview in August

Tencent took its Hy4 model out of preview on 4 November, Startup Fortune and Unite.AI report. Tencent's own page returned only its title to us, so the details are as the two outlets report them.

The release adds vision and computer use: Hy4 can read charts and documents and operate command-line tools and on-screen interfaces. The August preview was text-only and was released with open weights, Startup Fortune reports, and the full model ships API-only for now. Both outlets report that the weights and a system card will follow, with no date given.

Both report a price of $0.834 per million input tokens and $2.501 per million output tokens; Startup Fortune adds that it is free from 4 to 15 November. Both also report Tencent's claim that the hallucination rate in its internal search evaluations fell from 15.76% in the preview to 5.45%.

The independent benchmarker Artificial Analysis lists Hy4 at 35 on its Intelligence Index, 40th of 69 models, against a median of 37.

• Reported Hy4 left preview with vision and computer use and shipped API-only, with weights and a system card to follow, Startup Fortune reports. Startup Fortune
• Claimed Tencent says the hallucination rate in its internal search evaluations fell from 15.76% to 5.45%, as Startup Fortune reports. Startup Fortune
• Confirmed Artificial Analysis lists Tencent Hy4 at 35 on its Intelligence Index. Artificial Analysis