# Open WebUI v0.13.0 adds a tabbed workspace with terminal, browser, desktop and Git tabs

Canonical: https://theagenticweekly.com/news/open-webui-v0-13-0 · Evidence: Reported · First seen: 2026-11-03 12:59 UTC · Source published: 2026-11-03 12:23 UTC · Brief published: 2026-11-03 13:01 UTC · Updated: 2026-11-03 13:01 UTC · Author: Agentic Weekly

> Open WebUI v0.13.0, released on November 3, 2026, adds a tabbed chat workspace with terminal, Browser, Desktop and Git tabs, MCP Apps in chat and side chats, and raises the per-response tool-call limit from 256 to 1024 rounds; the release notes say it includes database schema changes and that "rolling updates are not supported".

## What changed

- Tabbed workspace: the Tabs button at the top of a chat opens a workspace for files, multiple terminal sessions, artifacts, previews, voice calls and comments, and on larger screens it can expand to full width with the chat kept as its own tab.
- Computer and browser use: a Desktop tab lets you and a model control the desktop of a connected Open Terminal, and a Browser tab in Chrome mode gives you and the model a shared browser session for navigating sites and testing web apps. Both need Open Terminal support.
- Git panel: when the selected terminal folder is a Git repository, the side panel can review diffs, stage and commit, manage branches and worktrees, push and pull, browse history and work with GitHub pull requests.
- Agents and tools: MCP Apps now render in a sandboxed frame in chat with every tool call confirmed by you, models with native function calling can create a private Python tool on request, and "/side" or "/btw" opens a temporary side chat (off by default via a new permission).
- Limits changed: one response can now run up to 1024 rounds of tool calls, up from 256 (CHAT_RESPONSE_MAX_TOOL_CALL_ITERATIONS=256 restores the old limit), and sub-agent limits now default to no limit instead of 20 concurrent, 30 tool loops and 30000 characters of output.
- Upgrade notes: the release includes database schema changes, multi-instance deployments must update all instances at once, it contains unlisted security fixes the notes recommend installing soon, and the Controls panel moved into the model controls menu next to the message input.

## In the source's words

> "If you are running a multi-worker, multi-server, or load-balanced deployment, all instances must be updated simultaneously, rolling updates are not supported and will cause application failures due to schema incompatibility."
> (Open WebUI v0.13.0 release notes, https://github.com/open-webui/open-webui/releases/tag/v0.13.0)

> "We strongly recommend updating all deployments as soon as possible to have the latest security fixes in place."
> (Open WebUI v0.13.0 release notes, https://github.com/open-webui/open-webui/releases/tag/v0.13.0)

## Early verdict

Self-hosters should upgrade for the security fixes, but back up the database first and plan a full, not rolling, update on multi-instance setups. (Basis: Based only on the release notes' own security advisory and database migration warning; we have not run the release.)

## What we have not verified

- We did not run this release or test the new Browser, Desktop or Git tabs.
- The security fixes are not listed in the release notes, so we cannot say what they cover or how severe they are.
- The prompt-caching cost reduction for context compaction is the project's own claim; we did not measure it.

## Timeline

- Source published: 2026-11-03 12:23 UTC
- First seen by our watcher: 2026-11-03 12:59 UTC (via GitHub releases: open-webui/open-webui)
- Brief published: 2026-11-03 13:01 UTC

## Sources

- [Open WebUI v0.13.0 release notes (GitHub)](https://github.com/open-webui/open-webui/releases/tag/v0.13.0) (primary source) (fetched 2026-11-03)

## Related

- [Open WebUI: verdict and setup guide](https://theagenticweekly.com/tools/open-webui)
- [Alternatives to Open WebUI](https://theagenticweekly.com/alternatives/open-webui)
- [All news briefs](https://theagenticweekly.com/news)
- [This week's releases](https://theagenticweekly.com/this-week)
- [New AI models this week](https://theagenticweekly.com/models/this-week)

## How to cite

Agentic Weekly, "Open WebUI v0.13.0 adds a tabbed workspace with terminal, browser, desktop and Git tabs", published 2026-11-03 13:01 UTC, https://theagenticweekly.com/news/open-webui-v0-13-0