Thinking Machines Lab Releases Inkling, a 975 Billion Parameter Open Weights AI Model Under Apache 2.0

Thinking Machines Lab released Inkling on Wednesday, an AI model with 975 billion parameters. The company, founded in early 2025 by former OpenAI CTO Mira Murati, is providing the model under the Apache 2.0 license, which allows developers to freely fine-tune and use it. Inkling is currently the largest open-weights model from the United States and is positioned as an alternative to Chinese open-weights models such as DeepSeek V4, GLM 5.2, and Kimi K2.6.