Anthropic Revokes OpenAI’s API Access to Claude, Alleging Violation Ahead of GPT-5 Launch

Anthropic just yanked OpenAI’s API access to Claude. Reason? Alleged violations of terms that forbid using Claude to train rival models—like GPT-5. Windsurf, an OpenAI acquisition target, got the boot earlier too. Spot the pattern: tighten access, box out competitors.

System shift: APIs aren’t just utilities anymore. They're chess pieces. The era of open benchmarking is fading. What’s rising? Walled platforms, guarded data, and sharp elbows in model land.