thinkingmachines.ai2026-07-30HN 33 pts · 2 comments2,416 words
Thinking Machines releases Inkling-Small, an efficient open-weights Mixture-of-Experts model with 276B total parameters and 12B active trained on NVIDIA GB300 NVL72 systems. The model features a context window of up to 1M tokens and achieves comparable performance to Inkling at a quarter of its size across agentic tool use (Terminal-Bench 2.1), reasoning (HLE text-only), and instruction following (IFBench) benchmarks. It is available for fine-tuning on Tinker and for text, image, and audio chat on Tinker Playground, with variable thinking effort to balance cost and performance.written, reviewed, cited
- Inkling-Small surpasses Inkling on reasoning and agentic coding benchmarks despite Inkling maintaining an advantage on knowledge coverage and factuality.
- The model uses an encoder-free architecture where images are divided into 40×40-pixel patches and transformed using a four-layer hMLP.
- ForecastBench and Prophet Arena results were obtained during testing between July 19 and July 28, 2026.