AnalysisOpinion / analysisEfficiency & Inference · Large Language Models · Reasoning & Planning1 source · Oct 14, 2026

Tessera-27B-B-CJK, Zellige AIs new finetune of Qwen with novel approaches to how we think about token savings

Tessera-27B-B-CJK is a Qwen3.8-27B coding agent that thinks in compressed CJK, and it spends fewer tokens doing it.

Proof1 community thread

Key points

  • Tessera is our lineup of models and tunes that try new ways to save tokens, run more efficiently and show other parts of our research.
  • So we taught Qwen3.8-27B to think less, and to think in compressed CJK, a shorthand that mixes English, Chinese words and symbols.
  • Here is one real turn from a held-out task, 27 tokens before two tool calls:
  • 0.50-0.64x the base model's thinking tokens per agent turn (typical turn 0.496x, 90% CI 0.385-0.624; token-weighted 0.644x)

Sources (1)

Extractive summary: sentences quoted from the sources.

Before this

  1. Oct 14, 2026New model from Telperion: Qwen3.8-27B-MLA & Qwen3.8-27B-GLA-g2. 4x smaller KV cache, smarter, and more efficient reasoning.
  2. Oct 14, 2026NVIDIA/TensorRT-LLM v1.4.0rc0
  3. Oct 14, 2026mistralai/Timestral-209M
  4. Oct 13, 2026Run fast, private agents on-device with LFM2.5-24B-A2B
  5. Oct 13, 2026black-forest-labs/flux-3-image-klein-comfy
  6. Oct 13, 2026SonicBoom: 52 tok/s decode on a laptop RTX 3050 (llama.cpp: 45) with the same quantized kernels, the difference is a graph compiler. No Python.

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