Thinking Machines

Mira Murati’s lab building open-weight multimodal base models and the Tinker customization platform—betting enterprises want models they can fine-tune, not only rent.

Thinking Machines

Role

Open-weight customization

Stack

MoE transformers, Tinker fine-tuning, multimodal RL

Status

Active

Thinking Machines Lab, founded by former OpenAI CTO Mira Murati, trains open-weight foundation models (Inkling family) and operates Tinker, a platform for fine-tuning and deploying customized checkpoints across inference partners.

Related Coverage

Mira Murati’s Thinking Machines Releases Inkling, Its First Open-Weight Model Jul 15, 2026

On July 15, 2026, Thinking Machines Lab—founded by former OpenAI CTO Mira Murati—released Inkling, a 975B-parameter open-weight MoE multimodal model (41B active) with a 1M-token context window, full weights on Hugging Face, and fine-tuning via the company’s Tinker platform.