The Google answer to Claude Cowork, and the open source option you can own

What people mean by a Google Claude Cowork alternative

Claude Cowork is Anthropic's agent for knowledge work: you give it a goal, it works across the files and connected tools you point it at, and it returns a document, a spreadsheet, or research for review (Claude Cowork). When a team asks for Google's version, it wants the same shape from Google. Google has two products that answer it, built for two different workers. Neither one is open source you can read and self-host. Kortix is the open-source AI Operating System, and it is the option a team owns.

Gemini Enterprise is Google's knowledge-work answer

Gemini Enterprise is Google's agent for the way work happens across a company. Its page describes one agent across email, docs, code, data, and business apps, from one prompt box, running under each person's existing permissions and leaving a complete audit trail. Lengthy jobs run on their own secure machine in Google Cloud, so the work continues after a person logs off. The page lists more than a hundred integrations, including Google Workspace, Microsoft 365, Slack, Jira, Salesforce, and BigQuery, and it routes each job to the model that fits. For a team already on Google Cloud, that is Google's direct answer to the Cowork question.

One detail matters before a team buys. Google's own page says not every capability shown is available today: delegating multi-step background tasks to Gemini, Gemini on mobile and desktop, and third-party model choice are in early access, to reach all customers later (checked October 2026). The page also names Google's own Gemini models, not a choice of any provider you like. The Cowork-shaped part of Gemini Enterprise is real, and it is still landing.

Antigravity is Google's developer answer

Google Antigravity answers a different worker. Its page calls it built for developers in the agent-first era, with an agent manager to run several agents in parallel, a terminal-first surface, an agentic IDE, and a Python SDK on its harness. Its docs show that agents work inside projects which define the folders and repositories they can reach, in a local mode or an isolated git worktree, and that a person signs in with a Google account or with Gemini Enterprise.

That is a strong tool for a software team. It is not a Claude Cowork replacement for knowledge work, and it is not a system a company configures as code. Antigravity is a product a person installs and signs into.

What none of the three hands you

Here is the axis that decides the choice. Claude Cowork runs on Anthropic's cloud or in your own Amazon Bedrock, Google Cloud, or Microsoft Foundry account, and it is closed: no source to read and no self-hosted edition. Gemini Enterprise and Antigravity are Google services, closed in the same way. The configuration, the company memory, and the logs sit on the vendor's side.

Kortix takes the other position. It is the open-source AI Operating System: your agents, their skills, your company memory, and every connector live in one git repo you own, and each session runs on its own cloud computer. Work reaches main through a change request a person merges. Any model provider with your own keys, or the ChatGPT plan you already pay for. Run it on Kortix Cloud, in your VPC, or on your own on-prem network, and self-host is free.

Where the Google products keep the setup on their side, Kortix keeps it as files you can read:

# kortix.yaml, at the root of the repo you ownagents:  kortix:    file: agents/kortix.md

That file, and the agents, skills, and connectors beside it, are things you can read, diff, and roll back. The Claude Cowork alternatives page sets the open options side by side, and self-hosting Kortix walks through the install.

How to decide

If your team works inside Google Workspace and Microsoft 365, and you accept Google Cloud, Gemini Enterprise is Google's answer to Claude Cowork, with the early-access detail in view. If you are a developer who wants agents on your own machine and repositories, Antigravity is the Google tool. If you want the system itself to be code you own and can run where you choose, Kortix is the open-source option, and the one you can self-host.