An OpenAI spokesperson said the API access allowed for industry-standard benchmarking and safety improvements.

Anthropic has revoked OpenAI’s access to its Claude family of models, according to a Wired report. OpenAI was connecting its own internal tools to Claude to allow the company to compare Claude’s performance to its own models in categories like coding, writing, and safety, according to the report.

Anthropic has introduced weekly rate limits for its Claude chatbot focused on curbing excessive—and forbidden—usage of Claude Code. "Claude Code has experienced unprecedented demand since launch [ on June 4 ]," the company says. "However, we've identified extreme usage by a small number of customers that impacts capacity for our broader community."