Tencent Expands WorkBuddy Tenfold as Hy4 Calls Surge

Tencent said on November 5 that it has expanded WorkBuddy tenfold after a surge in calls to its Hy4 model, according to a report by QbitAI.

A tenfold expansion is a concrete engineering move rather than a routine version bump: inference capacity, concurrency limits and service headroom were all raised together to keep the product responsive under heavier load.

QbitAI's headline also describes Hy4 as the top open-source model on agent capabilities. That ranking is the outlet's characterisation, and the available information does not set out which benchmarks or comparisons it rests on, so it should be read as a claim rather than a measurement.

The timing is the interesting part. Capacity expansion is usually a lagging indicator, so a tenfold jump implies demand moved before the announcement did, and the provider is closing a gap rather than pre-building for one.

Open-weight models are attractive to developers because they can be self-hosted, fine-tuned and cost-controlled, but serving them reliably is a separate problem from releasing them. By making the expansion public, Tencent effectively puts its serving stack into the story too.

It is also a shift in framing. Instead of arguing over benchmark scores, Tencent points at load, and the size of the buildout becomes the credibility behind that argument.

What to watch: the concrete version and parameter count behind Hy4, what WorkBuddy actually does for users, and whether service quality and per-call costs hold after the expansion.