Anthropic Revokes OpenAI's Access to Claude

Anthropic revoked OpenAI's access to the Claude API as of this week, citing violations of its terms of service. The move signals a sharp deterioration in relations between two of the AI industry's most prominent competitors. The article provides no detail on which specific terms OpenAI allegedly violated or whether OpenAI has publicly responded. Both companies have previously maintained a degree of parallel existence in the market, making the access revocation a notable escalation. The situation underscores growing competitive tension as frontier AI labs move to protect proprietary model access from direct rivals.