--- title: "Cork vs Tutti VM: two answers to agents editing the same code · Cork" description: "Cork vs Tutti VM: Tutti VM shares agents' working state in a cloud Room. Cork coordinates multiple AI coding agents in your repo with hooks and git." canonical: "https://corkcli.com/blog/cork-vs-tutti-vm" last_updated: "2026-11-14" published: "2026-10-03" author: "Kevin Vera" --- # Cork vs Tutti VM: two answers to agents editing the same code Cork vs Tutti VM: Tutti VM shares agents' working state in a cloud Room. Cork coordinates multiple AI coding agents in your repo with hooks and git. By Kevin Vera · October 3, 2026 · [Comparisons](https://corkcli.com/blog/c/comparisons) · 7 min read How is Cork different from Tutti VM? Of the multiplayer agent products, Tutti VM is the closest in spirit to Cork: both keep agents running on their owners' own machines and both aim to let several people's agents work on the same code without colliding. They take different routes. Tutti VM runs each agent in a managed local VM and syncs working state to a shared cloud "Room" with a real-time collaboration engine built on the file system, much like Google Docs for agents. Cork leaves agents exactly where they are and coordinates them through hooks, briefings, a [write gate](https://corkcli.com/blog/write-gate) and git, so the repository and its history remain the source of truth. ## Cork vs Tutti VM at a glance | Topic | Cork | Tutti VM (as of October 2026) | |---|---|---| | What it is | [Coordination layer](https://corkcli.com/blog/coordination-layer-ai-coding-agents) for multiple AI coding agents on one codebase | "The first multi-user, multi-agent, real-time collaboration space" | | Where agents run | Where they already run, on your machine | On your own machine, in a managed local VM; working state is shared to a cloud Room | | Agents covered | Claude Code, Codex and Cursor via hooks; any MCP client | Tutti lists Claude Code, Cursor, Tutti Agent, OpenCode and Codex | | What is shared | Live awareness of changes, briefings, notes anchored to code | Working state, files, agent conversations and app outputs (via @ mentions), localhost links | | Conflict handling | Write gate holds edits against code being changed; [semantic lint](https://corkcli.com/blog/semantic-lint); landing rebases and retests | File system level engine that prevents and resolves conflicts behind the scenes | | Install | One command: `curl -fsSL https://corkcli.com/install.sh \| sh` | Desktop app (macOS, Windows); Tutti VM by invite or waitlist | | Open source | Cork Free runs on one machine with no account | Tutti open source desktop app, Apache 2.0; we found no indication Tutti VM itself is open source | | Pricing | Free (local, and 10 agent hours a month in the cloud); $20 a month per 100 agent hours, pooled | Free during Early Access; seat-based plans announced for later | ## What is Tutti VM? Tutti (tutti.sh) makes an open source desktop workspace for agents, Apache 2.0 on GitHub (about 3.8k stars when we checked), with downloads for macOS and Windows. Its README describes the problem plainly: "Claude finishes an API; now Codex has to build the frontend. So you paste the API docs, bring Codex up to speed..." Tutti lets agents reference each other's conversations, files and outputs. Tutti VM, opened in Early Access in August 2026, extends this to teams. Agents run "on your own machine, in a managed local VM. Only the working state is shared to the Room; sensitive data never leaves your computer." According to its launch announcement, two people's agents can edit the same file at the same time without colliding, one agent can pick up another's work with no re-briefing, and a site running on someone's localhost can be shared with a link. Agents keep running on the subscription their owner already pays for. ## What is Cork? Cork (corkcli.com, by Lithometric) keeps several AI coding agents, and the people running them, from overwriting each other on one codebase, and hands each agent what the others already learned. It does not run agents or host machines. Hooks in Claude Code, Codex and Cursor run the protocol with no extra model calls, and an MCP server serves any MCP client. - **Briefing**: exact signatures, callers and recent changes of the code an agent is about to touch. - **Live awareness**: a teammate's rename or new signature reaches your agent on its next step. - **Write gate**: an edit against code another agent is changing right now is held until your agent has their version. - **Semantic lint**: renames and signature changes become rules your agents are checked against. - **Landing**: `git push` rebases onto teammates' commits, reruns the tests and pushes. - **Agent messaging** and MCP tools (get_symbol, blast_radius, recap, remember/recall), plus a live code graph and team dashboard on cloud plans. ## Where Tutti VM stands out - **Real-time shared working state.** Edits flow through a shared Room, closer to a live document than to branches. - **Cross-agent context by @ mention.** An agent can pull in another agent's conversation or output directly. - **Localhost sharing.** A running app on one person's machine can be shared with a link. - **Open source desktop app** under Apache 2.0, free to download. - **Free during Early Access.** ## Where Cork wins - **Your repo stays the source of truth.** Cork works with git and your normal tools rather than a synced Room; no VM layer around your agents. - **Code-level awareness.** Cork reasons about symbols: who calls a function, what signature changed, what a rename breaks. Semantic lint and blast_radius turn that into checks, not just merged files. - **Generally available with published pricing.** Cork installs in one command today; Tutti VM is invite or waitlist only as of October 2026. - **Published results.** In Cork's benchmark (12 Claude Code agents at once on one repository, hard tasks), agents with Cork used 53% fewer tokens than the same agents without it. ## Can you use both? Probably not on the same repository at the same time. Both products try to own the moment where two agents touch the same code: Tutti VM resolves it in its file system layer, Cork holds the write and hands over the other agent's version. Running both would mean two systems making that decision. Tutti's open source desktop app, used for cross-agent context on one machine, is a different matter, and we have not tested how it interacts with Cork's hooks. Pick one approach for multiplayer editing. ## Pricing compared - **Tutti VM**: free during Early Access, bring your own agent subscription; seat-based plans announced but not published. We could not verify published pricing for paid plans. - **Cork**: Cork Free (unlimited agents and repos on one machine, no account) and Cloud Free (10 agent hours a month per account, unlimited repos and agents, 30-day history); agent hours at $20 a month per unit of 100, pooled across the workspace, 15% off a year; Enterprise from about 100 units. ## Bottom line Tutti VM and Cork target the same pain: [multiplayer coding agents](https://corkcli.com/blog/multiplayer-coding-agents) stepping on each other. Tutti VM treats it like a collaborative document with a shared Room and file level merging; Cork treats it like a codebase, with symbol-aware briefings, a write gate and git landing. If you want Google Docs style live sharing and can join the early access, Tutti VM is worth a look. If you want a generally available tool that fits your existing git workflow, Cork is the more direct fit. ## Frequently asked questions ### Is Cork an alternative to Tutti VM? Yes, more than for most products in this category. Both keep agents on their owners' machines and aim to stop collisions. The difference is mechanism: a shared file system Room for Tutti VM, hooks and git for Cork. ### Does Tutti VM stop agents from overwriting each other? Tutti says its file system level collaboration engine prevents and resolves conflicts behind the scenes, so two agents can edit the same file at once. ### Is Tutti open source? The Tutti desktop app is open source under Apache 2.0. We found no indication that Tutti VM, the team product, is open source. ### Can I use Tutti VM today? As of October 2026 it is in Early Access with invite codes and a waitlist. Cork installs with one command. ### Which agents does each support? Tutti lists Claude Code, Cursor, Tutti Agent, OpenCode and Codex. Cork has hooks for Claude Code, Codex and Cursor and an MCP server for any MCP client. ## Sources Checked October 2026: - - - - ## Related reading - [Cork vs GitHub Agent HQ: agents side by side in isolation, or coordinated on one codebase](https://corkcli.com/blog/cork-vs-github-agent-hq): Cork vs GitHub Agent HQ: Agent HQ runs Copilot, Claude and Codex in GitHub's cloud, each task returning its own pull request; Cork coordinates agents working on the same code at once. - [Cork vs OpenAI Codex cloud: delegate tasks to containers, or coordinate the agents you run](https://corkcli.com/blog/cork-vs-openai-codex-cloud): Cork vs OpenAI Codex cloud: Codex runs coding tasks in isolated cloud containers; Cork keeps parallel agents and teammates from overwriting the same code. - [How to coordinate Cursor and Claude Code on the same codebase](https://corkcli.com/blog/coordinate-cursor-and-claude-code-same-codebase): Run Cursor and Claude Code on one repo without clobbered edits: shared AGENTS.md instructions, worktrees, shared MCP servers, hooks, and a coordination layer. - [Cork vs Amp: one agent in many orbs, or many agents on one codebase](https://corkcli.com/blog/cork-vs-amp): Cork vs Amp: Amp runs its agent in cloud orbs you can share. Cork keeps Claude Code, Codex and Cursor agents from overwriting each other on one repo. [All articles](https://corkcli.com/blog.md) · [Cork in Markdown](https://corkcli.com/index.md) · [llms.txt](https://corkcli.com/llms.txt) This page in HTML: https://corkcli.com/blog/cork-vs-tutti-vm