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Memo AI vs Sonix

Two fact sheets from our own research, side by side — pricing, platforms, API access and status re-checked by us rather than quoted from the vendors.

The short answer

Entry price
Memo AI from $25.99/yr, Sonix from $25/mo — different billing units, so no direct winner
Free plan
Only Memo AI (Sonix has paid plans only)
Public API
Sonix has one; not confirmed by us for Memo AI
Higher Trust score
Sonix — 94 vs 82 for Memo AI
Best fit
Memo AI: Researchers and students transcribing recordings they cannot upload to a cloud service · Sonix: Journalists and researchers cleaning up long interview recordings

From our own records as of each tool's last check. Anything we have not confirmed is left out rather than guessed. How we verify

Side by side

FactMemo AISonix
CategorySpeech-to-Text & TranscriptionSpeech-to-Text & Transcription
Pricing modelFreemiumPaid
Starts at$25.99/yr$25/mo
Public APINot confirmedYes
Trust score82 / 10094 / 100
PlatformsmacOS, WindowsWeb, API
CompanyPemo LLCSonix, Inc.
Launched20232017
Last verifiedOct 15, 2026Oct 15, 2026

What our research says

Memo AI

Memo AI is a local-first transcription app rather than the web service our earlier card described: files and YouTube links are processed on your own GPU, which is the right trade for interview, lecture and podcast transcripts you would rather not upload. The free tier is unusually complete, so the paid licences are closer to a tip jar with priority support than a feature unlock. Expect to bring your own model key for summaries and to live without a web or mobile client.

Pros

  • Runs on-device with GPU acceleration and works offline, so recordings stay on the machine
  • Free Basic tier has no cap on transcription, translation or voice synthesis and no device limit
  • YouTube links, batch mode, speaker diarization, 90-plus translation languages and export to subtitles, Markdown and Notion
  • Lifetime licence at $49.99 avoids a subscription

Cons

  • Desktop only: no web, iOS or Android client
  • AI summaries need your own API key and send text to that provider, which the offline claim does not cover
  • Paid tiers are licensed for one device and buy little beyond priority support
  • Pemo LLC publishes no address, country or governing law

Sonix

Pick Sonix when the transcript is a working document you will correct, subtitle and hand off — the editor is the product, not the ASR. If you mainly want live meeting notes, Otter is cheaper and better suited; if the recording is legally critical, Rev's human tier is the safer route.

Pros

  • The word-locked editor makes correcting a long transcript far faster than re-typing
  • 50+ languages for both transcription and translation, priced at the same hourly rate
  • REST API with batch processing and custom vocabulary is included with subscriptions
  • SOC 2 Type II, HIPAA posture and a stated no-training policy on customer files

Cons

  • Per-seat pricing at $25/mo each punishes small teams sharing one library
  • Hour allowances are the real constraint; Core's 5 hrs/mo goes fast on video
  • The 99% accuracy claim is vendor marketing — independent tests put it near peers, around the mid-90s
  • No free plan, only a 30-minute trial

Which one fits

Choose Memo AI if you need

  • Researchers and students transcribing recordings they cannot upload to a cloud service
  • Podcast and YouTube viewers who want subtitles and translations from a link on a Mac or Windows machine
  • Anyone who wants speaker-labelled transcripts without a per-minute meter

Choose Sonix if you need

  • Journalists and researchers cleaning up long interview recordings
  • Video teams producing multilingual subtitle tracks from one master file
  • Legal, medical and academic work where custom vocabulary matters
  • Engineering teams batch-transcribing a media archive through the API

Memo AI vs Sonix: the questions people ask

Is Memo AI cheaper than Sonix?

They charge in different units, so there is no like-for-like answer: Memo AI starts at $25.99/yr, Sonix at $25/mo. Entry price is the lowest paid plan as we last verified it.

Does Memo AI or Sonix have a free tier?

Memo AI has a free tier; Sonix has paid plans only.

Which has a public API, Memo AI or Sonix?

Sonix ships a public API, as of our last verification. A public API for Memo AI is not confirmed by us — check its developer docs before you plan an integration.

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