v0.28.3-nightly.99

Automated nightly build from main (2026-08-26)

v0.28.2

This release makes Grok 4.6 the default Grok model, adds a Coder provider with OAuth login, redesigns the workspace chrome, and introduces a durable per-workspace timeline.

Models

• Grok 4.6 as the new default Grok model, with native xhigh reasoning effort and official pricing
• Grok priority processing (Fast mode) and a combined thinking + fast-mode selector
• Grok Responses default to store=false for zero-data-retention parity
• New Coder provider with "Login with Coder" OAuth
• OpenAI GPT-5.6 Luna and Terra price cuts applied

Chat & workspace

• Redesigned workspace chrome: footer info bar, title header, creation hero, and composer
• Durable per-workspace timeline with machine-authored turn classification and a transcript card
• Copy/download context menu and richer previews for tool result images
• Project switcher on the scratch creation page
• Stack-aware PR indicator with a gh-stack dropdown

Agents & tasks

• Simplified persistent sub-agent lifecycle; parents can update sub-agent guidance mid-flight
• Task kind, spawn intent, model, and thinking level surfaced in task_await summaries and reports
• Sub-agent reports resume parents directly and collapse by default

Platform

• Experimental settings backup to a git repository
• Experimental Agent Plugins 1.0.0 support (skills + MCP)
• MCP client migrated to the official TypeScript SDK v2 with 2026-07-28 spec support
• Analytics timezone mode

Plus roughly 30 fixes and performance improvements across transcripts, streaming, mobile layouts, task management, and idle CPU usage.

Full Changelog: v0.28.1...v0.28.2

v0.28.1

This release adds Claude Opus 5, native Kimi K3, and Gemini 3.6 Flash support, plus project-less scratch chats and message queueing.

Models

• Claude Opus 5 support
• Native Kimi K3 support via a new Moonshot AI provider
• Gemini 3.6 Flash as the new default Gemini Flash model
• GPT-5.6: native reasoning controls, explicit prompt cache breakpoints for direct OpenAI, and corrected context limits over Codex OAuth

Chat

• Project-less scratch chats
• Messages sent during special sends queue up (FIFO) instead of erroring
• Stage arbitrary pasted/dropped files into the workspace from chat and the creation composer
• Mid-turn thinking-level changes apply at the next model step

Agents & tasks

• Sub-agent reports presented in chat, with incremental in-progress updates
• Sticky sub-agents that persist after reporting
• Skills refresh: invocation control, $ARGUMENTS, dynamic context, and .claude compatibility

UX

• Per-model cost breakdown in the workspace Costs tab
• Context sections split into a Stats Context sub-tab

Plus roughly 17 fixes across streaming, task management, MCP OAuth, and mobile layouts.

Full Changelog: v0.28.0...v0.28.1

v0.28.0

This release introduces support for the GPT-5.6 family of models.

v0.27.1

This release focuses on durable workflows, agent memory, and background automation.

Durable workflows

• First-class nested workflows, inline workflow_run source, and streamlined authoring
• Workflows right-sidebar tab with live run streaming
• Wall-clock workflow scheduler, workspace tags, and workspace.* host actions
• /orchestrate routes to durable workflows with a gate/fixup verification loop
• Workflow CLI improvements: worktree trust, mux trust command, and the wf alias

Agent memory (experiment)

• Memory tool with global, project, and workspace scopes
• Curation UI, hot-set preloading, and background dream consolidation

Background automation

• Background bash monitors that wake the agent on matching output
• Workspace heartbeats with trigger and when-busy scheduling modes
• Notifications for terminal background work, including monitors lost to a Mux restart

Models

• Claude Sonnet 5 and Claude Mythos 5 support
• Refusal fallback with a transcript badge (default: Fable 5 falls back to Opus 4.8)

UX

• Pin chats to the top of the sidebar and reorder them
• Continue an interrupted stream by clicking the interrupted splitter
• Workspace-staged ZIP attachments
• Optional sidebar age grouping

Plus roughly 75 fixes and several performance improvements, including sealed chat history rotation at compaction boundaries.

Full Changelog: v0.27.0...v0.27.1

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