Mike is an open source alternative to Harvey and Legora. Open source legal AI platform for document review, drafting, and spreadsheet-style extraction with per-cell citations. Self-host with your own API keys. AGPL-3.0 licensed, 4.1k GitHub stars, and last released 2026-07-17.
Open source legal AI platform for document review, drafting, and spreadsheet-style extraction with per-cell citations. Self-host with your own API keys.
How to start todayIn the product
Should you switch?
Law firms and legal teams that want to run document review, contract drafting, and tabular extraction workflows with per-cell citations on their own infrastructure, using their own Anthropic, Gemini, or OpenAI API keys, with no data leaving their control.
You need a managed cloud service with SLA-backed uptime: Mike has no hosted offering; the mikeoss.com demo instance explicitly warns against uploading confidential documents. Self-hosting requires Node.js 20+, a Supabase project, and an S3-compatible object storage bucket.
Mike launched in April 2026 and is under active early development (v0.4.0 as of July 2026). It does not include its own legal database: case law research requires a CourtListener API token. AGPL-3.0 requires publishing modifications if you run Mike as a network service.
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Community proof
Some quotes here endorse the approach rather than report first-hand use, or report a problem. We label those.
"I believe this is the direction enterprise software is generally going. An open-source base with a very permissive license that then each company can adapt (with claude, codex, etc.) for it's own needs."
"Self-hostable legal AI as open source is a useful direction in principle. Hard to tell how mature this actually is... the repo is pretty fresh and the marketing site is doing a lot of heavy lifting. I'd revisit in a few weeks."
Maintenance health
Can you do it today?
No public launch path found.
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