Former OpenAI CTO does what Altman won't: releases a frontier AI model that's actually open

Thinking Machines Lab, founded by former OpenAI CTO Mira Murati, has released Inkling, a 975-billion-parameter open-weights frontier AI model under Apache 2.0 license, matching capabilities of Chinese models like DeepSeek V4 and available on Hugging Face and third-party API platforms. The model features million-token context, mixture-of-experts architecture, and efficient reasoning token usage, positioning it as the largest American open-weights alternative to proprietary closed models.

This Wire brief sits within Fusion42's coverage of AI Frontier Models.