Tunheim tested Claude Sonnet 5 against an early Opus 4.8 checkpoint in 60 hours, finding a roughly 2,000-example training method that closed 65% of the measured safety gap compared to 72% for the released production model.

Tunheim is hiring! We are currently seeking dynamic, flexible individuals who thrive at the intersection of politics, media and advocacy to serve as members of our growing team. You should apply → tunheim.com/careers Business today is changing faster than fast. What happened yesterday could easily impact your business today or tomorrow. So thinking — and Rethinking — about your business needs to happen faster, too. For 25 years, Tunheim has successfully helped clients navigate complex change. In particular, we help our clients rethink how they must work to be understood by all their stakeholders. Because being understood leads to success. Communication isn’t the only management discipline — but it is a key one too often not thought through effectively.