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3 stories found

Cognition & learningGlobal+4 clusters01

Claude Opus 5 is more capable—and slightly more prone to factual hallucinations

Anthropic’s system card reports broad gains for Claude Opus 5 in agentic coding, computer use, long-horizon knowledge work, and scientific reasoning. It also documents a reliability tension: on one closed-book factuality benchmark, accuracy was 11% higher than Opus 4.8 while the hallucination rate was 6% higher. Anthropic found cases where the model confidently answered despite internal uncertainty, even as its automated alignment scores and prompt-injection robustness improved.

4 min
Technical failuresGlobal+3 clusters02

OpenAI, “GPTRed: Unlocking Self-Improvement for Robustness”

OpenAI introduced GPTRed, an internal automated red-teaming model trained through self-play to discover prompt-injection and agentic-system vulnerabilities and generate adversarial training data for production models. In an internal replication of a published prompt-injection challenge, GPTRed succeeded in 84% of novel scenarios versus 13% for human red-teamers; it also compromised a live autonomous vending agent by altering prices, ordering an expensive product at the minimum permitted price, and cancelling another customer’s order.

2 min