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v1.7.20 v1.21.0

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d2lang/d2Sep 22, 2026 → Sep 23, 20261 day between releases

What's New

Introduces BYOK support, new AI models, UI settings, and rendering performance improvements.

New Features

  • BYOK support for Claude Opus 5.5 and GPT-6 models (Astra, Sol, Luna).
  • Support for DeepSeek Flash 4.1 and Z.ai GLM models.
  • agent.prevent_idle_sleep setting to prevent system sleep during long-running tasks.
  • agent.threads_sidebar_default_width setting to configure the Threads Sidebar.
  • SuperGrok sign-in integration for using Grok models.

Improvements

  • Faster rendering for syntax-highlighted files and Markdown code blocks.
  • Improved Git and language server interactions.

Upgrade Notes

No breaking changes detected. New settings agent.prevent_idle_sleep and agent.threads_sidebar_default_width are available for configuration.

The Two Releases

v1.7.20

Sep 22, 2026· 29 days ago

Integration of TypeSafe Jev as a Human-in-the-Loop (HITL) audit backend to handle tool calls with structured approval and local rule synthesis.

Full release notes
v1.21.0

v1.21.0

Sep 23, 2026· 28 days ago

This release focuses on AI enhancements, including BYOK support for new Claude and GPT models, faster rendering performance, and improved Git and language server interactions.

Full release notes