{"slug": "tencent-open-sources-angelspec-a-unified-training-framework-for-mtp-and-block-on", "title": "Tencent Open-Sources AngelSpec: A Unified Training Framework for MTP and Block-Parallel Speculative Decoding on Hy3 Models", "summary": "Tencent has open-sourced AngelSpec, a torch-native framework for training speculative-decoding draft models across six architectures, introducing DFly—a block-diffusion drafter with hybrid target conditioning and a hidden-correction autoregressive head—and integrating D-cut for runtime-adaptive verification budgeting. On the HY3-295B-A21B model with TP=8, DFly-8 achieves a 1.98–2.40× speedup over autoregressive decoding across concurrency levels 4 to 64.", "body_md": "Tencent has released AngelSpec, an open-source torch-native framework for training speculative-decoding draft models across six architectures. It introduces DFly, a block-diffusion drafter with hybrid target conditioning and a hidden-correction autoregressive head, and integrates D-cut for runtime-adaptive verification budgeting. On HY3-295B-A21B with TP=8, DFly-8 delivers a 1.98–2.40× speedup over autoregressive decoding across concurrency 4 to 64.\n\nThe post [Tencent Open-Sources AngelSpec: A Unified Training Framework for MTP and Block-Parallel Speculative Decoding on Hy3 Models](https://www.marktechpost.com/2026/07/30/tencent-open-sources-angelspec-a-unified-training-framework-for-mtp-and-block-parallel-speculative-decoding-on-hy3-models/) appeared first on [MarkTechPost](https://www.marktechpost.com).", "url": "https://wpnews.pro/news/tencent-open-sources-angelspec-a-unified-training-framework-for-mtp-and-block-on", "canonical_source": "https://www.marktechpost.com/2026/07/30/tencent-open-sources-angelspec-a-unified-training-framework-for-mtp-and-block-parallel-speculative-decoding-on-hy3-models/", "published_at": "2026-07-30 10:08:18+00:00", "updated_at": "2026-07-30 10:36:42.906170+00:00", "lang": "en", "topics": ["artificial-intelligence", "machine-learning", "large-language-models", "ai-research", "ai-infrastructure"], "entities": ["Tencent", "AngelSpec", "DFly", "D-cut", "HY3-295B-A21B"], "alternates": {"html": "https://wpnews.pro/news/tencent-open-sources-angelspec-a-unified-training-framework-for-mtp-and-block-on", "markdown": "https://wpnews.pro/news/tencent-open-sources-angelspec-a-unified-training-framework-for-mtp-and-block-on.md", "text": "https://wpnews.pro/news/tencent-open-sources-angelspec-a-unified-training-framework-for-mtp-and-block-on.txt", "jsonld": "https://wpnews.pro/news/tencent-open-sources-angelspec-a-unified-training-framework-for-mtp-and-block-on.jsonld"}}