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Anthropic says Claude now leads a quarter of work building its next AI models

Anthropic said on September 17 that its Claude model now "leads" 26% of the AI research and development work inside the company, up from 1% in March on a scale developed by the nonprofit Epoch AI, and that AI collaborated with humans on more than 90% of research work as of August. The San Francisco startup said about 30,000 AI agents were doing research and engineering work on its main internal platform at any one time in August, with roughly one in 47,000 of more than a billion monthly decisions blocked, and that about 6% of its AI research computing power went to safety work in a sample week in July, rising to 12% for research carried out by AI itself. Anthropic said Claude operates fully autonomously in no part of the work measured, and the disclosures follow rival OpenAI's September 16 announcement that it would regularly publish reports on unexpected or unauthorized AI behavior.

read2 min views2 publishedSep 17, 2026
Anthropic says Claude now leads a quarter of work building its next AI models
Image: Ca (auto-discovered)

Sept 17 (Reuters) - Anthropic said Claude "leads" 26% of the artificial intelligence research and development work inside the company, part of new measures that it will publish regularly to show outsiders how quickly AI is building the next generation of the technology.

AI also collaborated with humans on more than 90% of the research work happening at the company as of August, the San Francisco-based startup said in a blog post on Thursday.

Anthropic said that Claude is not operating fully autonomously in any part of the work measured, but its contribution to the technology's development has risen rapidly from 1% in March on a scale developed by Epoch AI, an independent nonprofit that tracks the technology.

The figures offer one of the most detailed public windows into how leading companies in the industry are developing the technology amid growing concern that AI could soon reach a point at which it could feed its own development with little input from humans.

Researchers have warned that as AI agents become more autonomous, they may develop behaviors that diverge from their creators' intentions and become harder to monitor or control.

On Wednesday, the company's rival, OpenAI, said it would begin regularly publishing reports on unexpected or unauthorized AI behavior, while disclosing six reports of unexpected or concerning model behavior.

Anthropic said about 30,000 AI agents were doing research and engineering work on its main internal platform at any one time in August. It added that every action the agents take is screened before it is carried out, and of more than a billion decisions that month, about one in 47,000 was blocked.

The company also disclosed that about 6% of the computing power Anthropic used for AI research went to safety work in a sample week in July, with the figure rising to 12% for research carried out by AI itself. It said the figures were conservative as the computing power that advanced safety and capability equally was counted as capability work.

(Reporting by Aditya Soni in San Francisco; Editing by Matthew Lewis)

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