Explosive Usage: Anthropic revokes ChatGPT-maker OpenAI’s access to Claude; says OpenAI’s technical staff were using our coding tools to…

Anthropic has terminated OpenAI’s API access to its Claude AI models, alleging violations of terms of service. OpenAI reportedly utilized Claude’s coding capabilities to aid in the development of its upcoming GPT-5 model, specifically for benchmarking and safety evaluations. This decision reflects growing tensions within the AI industry, as companies increasingly restrict competitor access to their APIs.