v0.27.1-nightly.119

Automated nightly build from main (2026-06-24)

v0.27.1-nightly.105

Automated nightly build from main (2026-06-23)

v0.27.1-nightly.101

Automated nightly build from main (2026-06-22)

v0.27.0

This release brings first-class support for the Claude Fable and Mythos models.

Additional improvements include:

• Improved Immersive Review performance
• /spawn built-in skill for indicating intent to run task in a sub-agent
• backslash symbols like \Pi for writing Π into the input box
• More ergonomic thinking effort keybinds: decrease with Ctrl+Shift+[ and increase with Ctrl+Shift+]

v0.26.1

This release brings some minor bug-fixes and usability improvements.

• Solved some long-standing layout flashes on chat send
• Added a per-model minimum thinking level (default: medium) so that cycling thinking is more ergonomic
• Refined plan mode instructions to relax guard on mutations, permitting the agent to delete its own plan file, use local FS for analysis work, create GitHub issues, etc.
  • Opus 4.8 is much more stringent about following the previous mutation guidelines, which lead to long (wasted) reasoning traces about how to execute a request w/o mutation.
• Refined ask_user_question tool call instructions to avoid presenting "recommended" option and focus on genuinely open questions with no clear path forward

v0.26.0

This release brings support for Opus 4.8 as well as a few minor improvements.

On the visual side, long plans are now more reviewable with a sticky table of contents that appears in the gutter:

• Cleaned up the Custom Agents system, removed unnecessary configuration options
• Fixed SSH runtime worktree bug
• Bounded syntax highlighting runtime to avoid long stalls
• Many bug-fixes and tweaks to the Goal system

v0.25.0

Happy to share the first substantial release in a while.

Key features:

• /goal for Codex-like auto-self-prompting towards a well-defined objective, early testing shows this approach is very useful
• /btw for Claude-Code style one-off Q&A while the agent is running, without disrupting main context
• Agent will now highlight code chunks in the Review Pane it wants you to focus on, further aiding in the transition to fully autonomous agents
• Agent status in sidebar now generated from small model at pre-defined intervals, so they're more consistently up-to-date

Honorable mentions:

• Orchestrator restored in part as /orchestrate built-in skill
• /truncate removed due to dubious value
• SSH workspace spawn times improved to ~2x RTT

v0.24.0

Major changes:

• First class support for DeepSeek V4 models
• Sections replaced with sub-projects, which makes context segregation in monorepos more manageable
  • Sections had no consistent adoption pattern and lacked analogues in Claude Code / Codex

Pleasantries:

• Sped up SSH runtime setup significantly
• Solved a variety of layout flashes and performance issues in transcript streaming

Removals:

• Removed the Orchestrator built-in agent
• Removed the file explorer

v0.23.2

This release brings GPT 5.5 and GPT-5.5-Pro, supporting both standard API billing and Codex authentication.

v0.23.1

This release brings Opus 4.7, which has the same UX as 4.6 with the exception of a new "xhigh" thinking in between "high" and "max".