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The Wire · Showcase

QWEN3.5 SPECULATIVE DECODING HITS 70% SPEEDUP ON LLAMA.CPP, OLLAMA ROUTES CLOUD MODELS

By RepoJournal · Filed · About Local LLMs

Qwen3.5's MTP head is now live across both Ollama and llama.cpp, delivering 24-70% inference speedup on dense models while Ollama adds smart cloud-model routing to end user confusion.

The speculative decoding win spans two major inference engines. Ollama loaded the MTP head for qwen3.5 and wired it as an automatic draft model in the MLX engine [1], pushing the 35B MoE from 131 to 162 tokens/s on code (24% faster) and the dense 27B from 31 to 53 tokens/s (70% speedup). Llama.cpp followed with its own MTP tensor loading [3], but added a load_mtp flag to skip MTP overhead when speculative decoding isn't requested. In parallel, Ollama shipped a UX fix [2] that probes for :cloud variants when a model pull fails, suggesting kimi-k3:cloud to users at the terminal instead of leaving them with a cryptic file-not-found error. On the vLLM side, the team landed a block-table alignment fix [4] that unifies width calculation across three indexer paths, preventing buffer mismatches under deep context packing. Across 4 repos, the stack logged 110 commits, 104 PRs, and 10 releases in 24 hours. SGLang is now routing Kimi Linear through paged MLA backends [5] and shipping fastsafetensors without GDS for hosts lacking the NVIDIA driver [6].

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Action items

References

  1. [1] mlx: qwen3.5 MTP speculative decoding ↗ ollama/ollama
  2. [2] cmd: suggest :cloud when a model has no default tag ↗ ollama/ollama
  3. [3] llama : load MTP tensors only if they are really used ↗ ggml-org/llama.cpp
  4. [4] [Bugfix] Universally align block table width to 128 tokens ↗ vllm-project/vllm
  5. [5] [unified-memory] Let Kimi-Linear use the paged MLA attention backends ↗ sgl-project/sglang
  6. [6] Support fastsafetensors no-GDS loading and page-cache release ↗ sgl-project/sglang

Quick answers

What shipped in Local LLMs on August 1, 2026?
Qwen3.5's MTP head is now live across both Ollama and llama.cpp, delivering 24-70% inference speedup on dense models while Ollama adds smart cloud-model routing to end user confusion. In total, 110 commits, 104 pull requests, and 10 releases landed.
Who contributed to Local LLMs on August 1, 2026?
16 developers shipped this update, including drifkin, jessegross, dhiltgen, arthw, johnkarlhill, Masato Nakasaka, fairydreaming, and MatthewBonanni, and 8 more.
What were the notable Local LLMs updates?
mlx: qwen3.5 MTP speculative decoding, cmd: suggest :cloud when a model has no default tag, and llama : load MTP tensors only if they are really used.

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