Particle.news

Thinking Machines Releases Inkling 2 Small as Closed Model

The company says it will publish the model’s weights under an Apache 2.0 license after external safety testing, which leaves immediate self‑hosting and independent audits off the table.

Overview

  • Thinking Machines launched Inkling 2 Small as a proprietary model on its Tinker platform, making inference and on‑platform fine‑tuning available but not downloadable weights.
  • Inkling 2 Small uses a mixture‑of‑experts design with 594 billion total parameters and about 17 billion active parameters per request, which cuts per‑call compute while preserving large capacity.
  • The model is marketed for agentic coding, vision, reasoning, and knowledge work, accepts image inputs, and exposes a variable “thinking effort” control to trade latency and cost for deeper reasoning.
  • Thinking Machines published per‑token pricing of $0.30 per 1 million input tokens and $1.00 per 1 million output tokens and released benchmark results including a 31 on the AAI index and fourth place on DesignArena.
  • The company promises an eventual Apache 2.0 weights release after external safety testing but gave no date, a stance that will determine whether developers can self‑host, audit the model, or run it off‑platform.