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Konch 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. Konch starts at $14, Sonix at $25. Only Konch has a free tier. Both ship a public API.

KonchTranscribes audio and video in 56 languages, with optional human certification in 24 to 48 hoursSonixTranscription, translation and subtitles with a browser editor

Side by side

FactKonchSonix
CategorySpeech-to-Text & TranscriptionSpeech-to-Text & Transcription
Pricing modelFreemiumPaid
Starts at$14 month$25 month
Public APIYesYes
PlatformsWeb, APIWeb, API
CompanyKonch Inc.Sonix, Inc.
Launched20182017
Last verifiedSep 6, 2026Sep 6, 2026

What our research says

Konch

Konch's differentiator is that human certification is a tier of the same product rather than a separate vendor you have to go find, and unlimited translation into 75 languages comes with every paid plan. The constraint is the minute allowance: $14 buys two hours, so anyone with real volume ends up on pay-as-you-go at about 13 cents a minute.

Pros

  • Human-certified transcripts are a tier of the same product, not a separate vendor
  • Unlimited transcript translation into 75 languages on every paid plan
  • A developer API at developer.konch.ai for pipeline use
  • Pay-as-you-go credits exist alongside subscriptions, so occasional jobs are not forced onto a plan

Cons

  • 120 minutes on the $14 plan is low next to unlimited-hour competitors
  • The company's country is never stated on the site; only a US phone number gives it away
  • Discount codes are plastered across the site, which makes the list price hard to trust
  • Human certification adds a 24-48 hour wait, so it is not for same-day turnarounds

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 Konch if you need

  • Researchers and legal users who need a certified, human-checked transcript
  • Multilingual work where the transcript must also be translated
  • Occasional users who prefer non-expiring credits to a subscription

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

More comparisons

All Konch alternatives →Browse all Speech-to-Text & Transcription →