Changelog

Track the evolution of Claude 5 with our comprehensive update history

Claude 5 Sonnet

February 2026
  • Claude 5 Sonnet available on claude.ai for all users
  • Extended 200K context window now accessible via web interface
  • Improved response quality based on user feedback
  • Enhanced mobile experience with responsive design

Claude 5 Sonnet API

January 2026
  • Initial release of Claude 5 Sonnet via API
  • 48.3% SWE-bench score achieved
  • 200,000 token context window introduced
  • Superior coding and reasoning capabilities demonstrated
  • Competitive API pricing at $3/$15 per million tokens

Upcoming Releases

Q2 2026 (Expected)
  • Claude 5 Opus: Flagship model with maximum capabilities
  • Claude 5 Haiku: Fast, economical model for high-volume tasks
  • Enhanced multimodal capabilities
  • Additional API features and integrations