Google Antigravity

• Improved resilience to transient model API errors: the agent now retries errors such as 503 Unavailable for much longer with exponential backoff, so a brief service hiccup no longer aborts your session.
• Improved sign-in and startup speed by reading your signed-in identity from the stored credential instead of making a network request on every launch and after browser consent; a failed identity lookup no longer prevents sign-in from completing, and the displayed plan tier no longer briefly disappears during startup.
• Improved headless (-p) runs to exit promptly once the final answer is delivered: the CLI waits for running background tasks and scheduled timers to finish, bound by --print-timeout, and leaves daemon background tasks such as dev servers running instead of terminating them.
• Improved failure reporting in headless (-p) runs: fatal errors now appear on stderr with a stable error: marker, a note is printed when the response may be truncated, and runs that previously ended silently with no output now explain why.

• Added /model <name> <prompt>, which runs a single prompt on another model and then returns the session to the model it was using, so you can consult a different model mid-conversation without disturbing your saved default.
• Added a conversation_title field to the JSON payload passed to custom status line and window title scripts, so they can show the active conversation's name and pick up renames immediately.
• Added an agents list to custom agent Markdown frontmatter, letting an agent declare the subagents it depends on using the same workspace-relative, absolute, and agent-relative path rules as skills.
• Improved /model to show a [model] argument hint as you type, so the command's arguments are discoverable without opening help.
• Improved the /settings panel so each Verbosity option explains itself as you highlight it, describing whether tool calls, commands, and thoughts are shown in full or collapsed into a token metrics table.
• Improved the sign-in and Google Cloud setup screens to use the CLI's standard styled key hints, which follow your color scheme and keybindings and drop the navigation hint when only one option is available.

• Added half-page scrolling with Ctrl+D and Ctrl+U to the artifact viewer.
• Added the pickerGrouping setting to /config and settings.json to configure the default conversation list view in /resume (flat or grouped by workspace).
• Improved terminal ASCII diagram rendering for Mermaid flowcharts in the artifact viewer and conversation.
• Improved /logout execution time by short-circuiting token removal directly to file storage when keyring storage is bypassed or unreachable.
• Changed unselected model families in the interactive /model picker to default to medium reasoning effort instead of low.
• Fixed subagent tasks unexpectedly prompting for tool approval in always-proceed mode while viewing the subagent details panel.
• Fixed orphaned Git worktrees accumulating on disk under .system_generated/worktrees when killing subagents or deleting conversations.
• Fixed SQLite database WAL checkpointing on CLI exit so trailing session metadata updates are flushed to disk before shutdown.
• Fixed customization discovery logging spurious errors when accessing temporary directories or paths outside the active workspace.

• Added an opt-in workspace-grouped view to the /resume conversation picker, allowing users to toggle between a flat list and conversations grouped by directory with Ctrl+F.
• Added Gemini 3.8 Flash to the model catalog when connecting with a GEMINI_API_KEY.
• Changed custom agents defined in Markdown to inherit ambient skills, rules, and subagents by default, matching the configuration of default agents.
• Fixed MCP OAuth authentication failing when authorization servers return authorization codes longer than 1024 characters.
• Fixed skill path matching and grouping in the /skills panel on Windows where host path separators (``) caused global and workspace skills to be misclassified.
• Fixed relative path resolution in Markdown-defined custom agents so relative subagent and plugin paths resolve correctly against the agent definition's directory.
• Fixed duplicate permission grants accumulating in configuration settings across session reloads and subagent invocations.
• Fixed /boost failing at runtime by improving worker tool configurations.

2.12.2 September 3, 2026 Gemini 3.8 Flash using ADC in AGY Enterprise Antigravity 2.12.2 enables enterprise users to access Google's flagship Gemini 3.8 Flash reasoning models using ADC. Improvements (1) Enterprise users can now select and use Gemini 3.8 Flash via ADC for agentic tasks. Fixes (0) Patches (0) 2.12.0 September 2, 2026 Quoting, /boost, and improved Settings Antigravity 2.12.0 includes several UX improvements across settings, the chat panel, and sidebar navigation. This release also includes a new slash command for paid users. Improvements (7) You can now highlight portions of Antigravity responses to quote as context for follow-up prompts. Introduced the /boost slash command to enhance thinking effort by using a multi-agent reasoning pipeline. General Settings now shows which of your projects override a setting, with a link to jump straight to that project's settings, and opening Settings opens the active project's settings when overrides are present. Terminal split layouts are now preserved across window reloads. The side question panel now has back and forward controls for stepping through the questions you have asked in a session. You can now send a message with