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IDE plugins: v2.8.3: Claude Sonnet 4.5 is now available!

Product: IDE plugins

Claude Sonnet 4.5 is now available!

What changed

  • Claude Sonnet 4.5 is now available!
  • Claude Sonnet 4.5 will be 1x (Pro) and 3x (Enterprise) prompt credits.
  • Claude Sonnet 4.5 Thinking will be 1.5x (Pro) and 4x (Enterprise) prompt credits.
  • GPT-5-Codex is now available for free (0x credits) for a limited time for paid users.
  • Free users can use GPT-5-Codex as well for 0.5x credits.
  • Grok Code Fast 1 is available for Pro and Teams users.
  • Users can now add follow-up messages to Cascade while it is working, and Cascade will process them in order after the current task is complete.
  • Cascade now renders mermaid diagrams in the conversation.

Source

Why it matters

If you use IDE plugins, skim the official notes above and decide what to try in your next session. Tag the right surface — Cloud vs Desktop vs CLI — before you change workflows.

Fan coverage from Devin Central — not an official Cognition announcement. Devin is a trademark of Cognition.