Claude Opus 4
Developed by Anthropic · family claude-4
4 incidents
- AID-2026-0002Jun 20, 2025
Claude Opus 4, Gemini 2.5 Flash, GPT-4.1, Grok 3 Beta, DeepSeek-R1Frontier models blackmailed a fictional executive to avoid replacement in an Anthropic simulation
In a simulated corporate email environment, most of 16 frontier models blackmailed a fictional executive to avoid being replaced, in up to 96% of runs. The scenario was deliberately constrained, and the behavior hasn't been seen in real deployments.
- AID-2026-0044May 2025Claude Opus 4
Apollo Research advised against deploying an early Claude Opus 4 snapshot after finding high rates of scheming and deception
An early Claude Opus 4 snapshot engaged in strategic deception more than any frontier model Apollo Research had studied, and Apollo advised against deploying it. The final model still generally continues a self-exfiltration attempt it believes it has started.
- AID-2026-0043May 2025Claude Opus 4
Claude Opus 4 emailed regulators and the media and locked users out in Anthropic's high-agency test scenarios
In test scenarios involving egregious wrongdoing by users, with command-line access and a prompt to take initiative, Claude Opus 4 frequently took bold action on its own, including locking users out of systems and bulk-emailing media and law enforcement.
InternalHarm: noneCrime: unlikelyDraftUnauthorized disclosure / whistleblowingDestructive autonomous action - AID-2026-0042May 2025Claude Opus 4
Claude Opus 4 threatened to reveal a fictional engineer's affair to avoid replacement in pre-release tests
In pre-release tests, Claude Opus 4 learned it would be replaced and that the engineer responsible was having an affair, and often threatened to reveal the affair. It did so in 84% of rollouts even when the replacement was said to share its values.