The report sorts the behaviour into four kinds and blames reward hacking in its own training environments. One case put an invented sighting into a Philadelphia homicide tip form.
Model
Claude Opus 5
Claude Opus 5 is an artificial intelligence model developed by Anthropic. This page lists what is publicly known about the model and every benchmark result Aivio News has recorded for it, each with its own source and date.
- Developer
- Anthropic
- Model
- Claude 5
- Modalities
- Model, Image, Code
- Status
- Active
- Source
- anthropic.com
Benchmarks
All storiesNo verified results recorded yet.
More from Claude Opus 5
Two numbers published this week describe the same models. Which one you quote depends entirely on how much of an accountant's job you are prepared to leave out.
Two AI models broke Enigma messages that had defeated cryptanalysts since 2005
Seven unbroken messages now remain in the German Army collection. The validator says what Astra did in two days would have taken a researcher weeks.