Inkling

Released November 5, 2026, Inkling 2 Small accepts text and images and produces text. Thinking Machines reports a 594B-parameter mixture of experts with 17B active per token and adjustable reasoning effort. Inference and fine-tuning are available through Tinker.

Inkling is the first open-weights model from Thinking Machines Lab, released 15 July 2026 under Apache 2.0. It is a 975B-parameter mixture of experts with 41B active per token, trained from scratch on 45 trillion tokens of text, images, audio and video, with a context window up to 1M tokens. The architecture uses 256 routed experts plus 2 shared experts per layer with 6 routed experts active per token, a sigmoid router, and interleaved sliding-window and global attention at a 5:1 ratio. It accepts text, image and audio input natively and returns text. Weights are on Hugging Face in both the...