AI researchers call for new tools that can slow automated model development
1,134 AI researchers from OpenAI, Anthropic, Google, and Meta just signed an open letter calling for speed bumps on automated model development. Here's what they're afraid of.

Why it matters
Frontier AI labs are publicly signaling concern about the pace of autonomous model development and calling for regulatory guardrails—a rare moment of industry self-regulation that signals internal risk perception among the companies building the fastest models.
The key facts
5 to know1,134 signatories across frontier AI companies
Signatories include researchers from Anthropic, OpenAI, Google, Meta
Open letter calls for new regulatory tools to slow automated AI development
Published July 28, 2026
Focuses on governance/regulation of automated model development initiatives
Go to the source
SiliconAnglesiliconangle.com
Publisher excerpt: A group of tech workers today published an open letter that calls for a new approach to regulating automated artificial intelligence development initiatives. All the document’s 1,134 signatories work at companies that are building frontier AI models. Anthropic PBC, OpenAI Group PBC, Google LLC and…

