Tencent open-sourced a 770B frontier model under Apache 2.0. Here is what open-weights AI really changes for marketing teams, and, just as important, what it doesn't.
Key takeaways
- On August 28, 2026, Tencent open-sourced Hy4 preview, a 770B-parameter mixture-of-experts model (49B active) with a 1M-token context, under Apache 2.0.
- Apache 2.0 is the point for business: it permits commercial use, modification, and redistribution without a separate agreement, so you can own and adapt the model.
- Tencent reports strong benchmarks, like 85.4 on Terminal Bench 2.1, but several are its own or internal figures, so treat them as promising, not independently confirmed.
- The honest catch: running a 770B model in-house needs serious infrastructure, so most marketing teams will use private or cheaper hosted access, not literally self-host.
- Vanaxity's recommendation: treat open-weights AI as leverage, for privacy, brand fine-tuning, and cost, and choose the deployment that fits your scale, not the biggest model.
📖 Read the full guide on Van Data Team → Open-Weights AI: What Tencent Hy4 Means for Marketers
