Simon Willison’s Weblog

Databricks Signs Definitive Agreement to Acquire MosaicML, a Leading Generative AI Platform. MosaicML are the team behind MPT-7B and MPT-30B, two of the most impressive openly licensed LLMs. They just got acquired by Databricks for $1.3 billion dollars.

Posted 30th June 2023 at 1:43 am

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ChatGPT agent's user-agent - 4th August 2025
The ChatGPT sharing dialog demonstrates how difficult it is to design privacy preferences - 3rd August 2025
Reverse engineering some updates to Claude - 31st July 2025

open-source 261 ai 1484 generative-ai 1299 local-llms 132 llms 1277

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