What just happened in frontier model releases?
Current state
Anthropic released Claude Sonnet 5, which replaces Sonnet 4.6 as the default model. It offers agentic performance close to Opus 4.8 at 40% of the API price.[1]
Timeline
The only event in the claims is the release of Claude Sonnet 5 by Anthropic.[1]
Upcoming catalysts
No upcoming catalysts are mentioned in the claims.
What changed in this version
Initial version: Anthropic released Claude Sonnet 5, replacing Sonnet 4.6 as default model, with agentic performance close to Opus 4.8 at 40% API price.