Harmonai vs Horch

A side-by-side look at pricing, capabilities, pros, cons, and our editorial scores.

	Harmonai Audio	Horch Audio
Tagline	Open-source generative audio lab from Stability AI building diffusion models for music production.	Privacy-first, on-device meeting assistant for macOS
Category	Audio	Audio
Pricing	Free· Free open-source models and code; no hosted product on this site	Paid· One-time purchase: €49 once
Model	Dance Diffusion / Stable Audio family	Whisper (local) for transcription; optional Ollama / MLX local LLMs for summarization
Editorial score	6.8 / 10	—
Use cases	music-generationsound-designsample-library-creationaudio-researchmodel-fine-tuning	Confidential client meeting transcriptionAutomatic action-item extractionPer-contact relationship historyPre-meeting briefings from prior callsLocal Whisper transcription without cloud uploadFeeding meeting context into Claude or Cursor via MCPPersonal second-brain in MarkdownLegal, medical, or NDA-bound conversation notes
Pros	Genuinely open-source weights and code under a real research lab Backed by Stability AI with serious audio-diffusion expertise Useful for fine-tuning custom sample libraries and unique sound design Active Discord and GitHub community around the models	Fully on-device by default — audio and transcripts never leave the Mac unless the user opts in One-time €49 purchase instead of a recurring per-seat SaaS bill Records at OS level so no bot appears in the meeting and any app (Zoom, Meet, Teams, in-person) works Notes stored as plain Markdown in ~/Meetings — portable, greppable, Obsidian-friendly Auto-generates action items, topic summaries, and per-person profiles from spoken content MCP server exposes meeting history to Claude, Cursor, and other agent clients Local Whisper transcription plus optional Ollama/MLX means you pick the summarizer
Cons	Landing page is sparse; you need to dig into GitHub to find tools No hosted UI or one-click product for non-technical users Release cadence is research-paced, not product-paced	macOS only — no Windows, Linux, iOS, or web client Local Whisper and summarization need a reasonably modern Apple Silicon Mac to feel fast No cloud sync or team workspace, so sharing across a team requires bring-your-own storage Small independent product without the integrations catalog of Fireflies, Otter, or Fathom OS-level capture depends on macOS screen/audio permissions, which some corporate MDM setups block
Website	harmonai.org	horch.app

Pick Harmonai if

✅ Genuinely open-source weights and code under a real research lab
✅ Backed by Stability AI with serious audio-diffusion expertise
✅ Useful for fine-tuning custom sample libraries and unique sound design
✅ Active Discord and GitHub community around the models

Pick Horch if

✅ Fully on-device by default — audio and transcripts never leave the Mac unless the user opts in
✅ One-time €49 purchase instead of a recurring per-seat SaaS bill
✅ Records at OS level so no bot appears in the meeting and any app (Zoom, Meet, Teams, in-person) works
✅ Notes stored as plain Markdown in ~/Meetings — portable, greppable, Obsidian-friendly

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