ChatGPT Work runs your agents on OpenAI's cloud, on OpenAI's models, under OpenAI's terms. For most teams that is the default choice and a fine one. But if you searched for an "open source ChatGPT Work alternative", the decision underneath is not about price. It is about who owns the configuration, the memory and the connectors your agents run on — and whether any part of it can be audited or self-hosted at all.
What ChatGPT Work actually is
ChatGPT Work is OpenAI's agentic workspace: agents that complete multi-step work on OpenAI's infrastructure. As OpenAI's own product pages present it, it runs on OpenAI's cloud, it is closed source, and it is billed on OpenAI's paid plans with usage metering. There is no self-hosting option, and there is no second model provider: the model layer is OpenAI's.
That is not a defect — it is a product choice. It does mean three things are fixed: your agents' configuration lives inside OpenAI's product rather than in files you hold, your company memory accumulates on their side of the wall, and the connector setup is theirs to change.
What "own" means in an agent platform
Ownership is concrete in an agent platform, not a slogan. A team owns its agent platform when it can:
- Read the agent definitions. Who does what, in files, in a repository your team can clone.
- Keep the company memory. What the agents have learned, stored where you control it.
- Audit and pin the connectors. Which tools every agent may touch, scoped per agent, with credentials that never sit on the agent's machine.
- Pick the models. Switch providers the day a better one ships, without renegotiating anything.
- Self-host. Run the whole thing on a laptop, a VPS, your VPC or on-prem.
- Gate every change. Work lands through a review a human reads as a diff, not silently.
ChatGPT Work offers none of those. Kortix offers all of them, and it is open source.
Kortix: the open-source ChatGPT Work alternative
Kortix is the open-source alternative to Claude Cowork and OpenAI ChatGPT Work, and the open-source AI Management System. Your agents, their skills, your company memory and every connector live in one git repo you own. Each session runs on its own isolated cloud computer — a disposable Linux sandbox on its own branch — and whatever an agent produces lands on the main branch only as a change request a human reviews and merges. Kortix is open source (Elastic License 2.0) — self-host, read and modify the code.
It is model-agnostic: any provider with your own API keys, your own OpenAI-compatible endpoint, or the ChatGPT plan you already pay for. It connects 3,000+ apps plus any MCP, OpenAPI, GraphQL or HTTP API, with connector credentials brokered server-side and allow/ask/block rules down to a single tool call. Self-host free, or use the managed cloud.
Three commands take it from zero to running:
curl -fsSL https://kortix.com/install | bash
kortix init
kortix ship
Side by side
| Kortix | ChatGPT Work | |
|---|---|---|
| Source | Open source — read it, fork it, audit it | Closed |
| Models | Any provider, your own API keys | OpenAI's models only |
| Where it runs | Our cloud, your VPC, or your own on-prem network | OpenAI's cloud, no self-host |
| Your configuration | Files in a git repo you own | Inside their product |
| Access | Self-host free; managed cloud $40/seat/mo + usage | Paid plans, usage-metered |
| Human gate | Every change lands through a change request a human reads as a diff | In-product approvals |
When ChatGPT Work is still the right call
Be straight about the trade. ChatGPT Work is a good choice when your team already lives in OpenAI's ecosystem, wants zero infrastructure to run, and is comfortable with the configuration living inside a vendor product. Nothing in this article argues otherwise. The case for an open-source alternative is specific: your agents' definitions, memory and connectors are company assets, and you want them somewhere you can read, diff, export and self-host.
How to choose
- Zero infrastructure, OpenAI-native, no ownership requirements. Stay on ChatGPT Work.
- Ownership as a requirement — auditable configuration, your model choice, self-hosting, a human gate on every change. Pick open-source Kortix.
- Coding only. A coding-agent control center (OpenHands is the strongest open-source option there) may fit better than a full agent platform; Kortix runs coding as one job among many.
- Fixed flows, not open-ended work. A workflow builder such as n8n handles the same steps in the same order; pick Kortix when the job is open-ended work an agent does on its own computer.
The full, sourced comparison — capabilities, self-hosting path and the parts of your setup each option actually holds — is at chatgptworkalternative.com. If ownership is the requirement, get started with open-source Kortix and run your first agent on a repo you own.
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