Mike: Open-Source Legal AI with Self-Hosting, Multi-Model Support
Mike is an open-source legal AI platform positioned as a drop-in replacement for Harvey and Legora. It provides the same feature set without enterprise contracts or per-seat pricing; you only pay the model API costs. The codebase is fully auditable and forkable.
Core Features
- Assistant: Chat interface that reads uploaded documents, cites verbatim, runs multi-step workflows, and drafts/edits contracts end-to-end. Supports plugging in Claude or Gemini keys for full model control.
- Projects: Matter-scoped workspaces that maintain full context across conversations and documents (credit agreements, SPAs, leases, diligence packs).
- Tabular Review: Spreadsheet-style extraction across hundreds of documents in parallel. Every cell is cited back to a page and quote — no hallucinations.
- Workflows: Save proven prompts as reusable templates (CP checklists, credit agreement summaries, change-of-control reviews). Juniors can run them in one click firm-wide.
Why Open Source
- Zero license cost, no vendor lock-in, no rising per-seat fees.
- Self-hostable by design — documents stay within your infrastructure for compliance, data residency, and privilege control.
- Fork, extend with practice-specific workflows, integrate your DMS, or wire in your own citation engine.
- Audit every line: no black boxes around prompt construction, citation parsing, or data flow.
Start in the cloud or clone the repo. Available as a hosted product or to self-deploy from source.
📖 Read the full source: HN AI Agents
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