Anthropic has cut off one of its biggest competitors, revoking OpenAI’s access to its Claude family of AI models.

OpenAI lost access to the Claude API this week after Anthropic claimed the company was violating its terms of service.

The new rate limits will go into effect August 28 for subscribers to Anthropic's $20-per-month Pro plan, as well as its $100- ...

Anthropic has terminated OpenAI's API access to its Claude AI models, alleging violations of terms of service. OpenAI ...

Anthropic cut off OpenAI’s ability to use its API for Anthropic models on Tuesday. The move followed Anthropic’s finding that ...

Anthropic says it has revoked OpenAI's access to the Claude API after ChatGPT's engineers were found using Claude's coding ...

Anthropic has introduced weekly rate limits for its Claude chatbot focused on curbing excessive—and forbidden—usage of Claude ...

OpenAI  has lost its access to the Claude API, just before the GPT 5 launch. The primary reason  behind this sudden move is ...

Anthropic claims that OpenAI has been using Claude's coding tools to train its next-gen AI model, GPT 5.

As large language models like Claude 4 express uncertainty about whether they are conscious, researchers race to decode their ...

Anthropic has cut off OpenAI's access to its Claude API, a move that comes after the former accused the latter of violating ...

Blaming users that run Claude Code 24/7, Anthropic instituted weekly rate limits for some Claude users resulting in backlash on social media.