Short answerLangflow is an MIT-licensed visual builder you can run yourself. You can publish a flow through an API, an embedded chat widget, an MCP server or an OpenAI Responses-compatible endpoint. We found no official Custom GPT migration guide and no official hosted cloud or pricing page.
What it offers
- MIT license; install with pip or uv, run with Docker, or use the desktop app.
- Agent components with tools; MCP client and MCP server support.
- Publishing: API, an embedded chat widget, an MCP server and an OpenAI Responses-compatible endpoint.
What we could not verify
- An official hosted cloud or pricing. We found no official pricing page.
- Exact supported file types for knowledge.
Official images require setting a superuser password before first login, per the repository. This suits technical teams comfortable running software. If that is not you, look at other options. Compare with Dify.
Check your GPT before you move it
Paste your instructions, file names and Actions schema into the free checker. It runs in your browser and builds a portable bundle. Nothing is uploaded.
Open the free checkerRelated guides
Sources
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