Softwr

Translation · head to head

Smartling vs Sonix

Smartling logo

Smartling

Translation

Enterprise translation management sold alongside first-party language services priced per word

From
On request
Rated
-
Full reviewWebsite
Sonix logo

Sonix

Translation

Automated transcription and translation with per-hour pricing published up front

From
$10/month
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Smartling translation memory is retained for only 180 days on the Core tier, so the asset that would make a future migration cheap expires on the plan most likely to be used by a team testing the water.; Sonix monthly hour allowances are small relative to the subscription price: the $25 Core plan includes five hours, which at the published $10 overage rate means the subscription is only worth buying for storage and features rather than for the hours.
  • They diverge on capability: Smartling covers Translation memory, Sonix covers Automated transcription.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Smartling and Sonix actually diverge.

Attributes where Smartling and Sonix differ
AttributeSmartlingSonix
Starting priceOn request$10/month
Pricing modelquotePer hour of transcription

Identical on both: free tier (No), platforms (Web, API), user rating (Not yet rated), category (Translation).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Smartling

  • Translation memory
  • Visual context CAT editor
  • Configurable workflows
  • First-party language services
  • Linguistic quality assurance
  • Connectors and API

Only in Sonix

  • Automated transcription
  • Translation
  • Synchronised editor
  • Subtitle export
  • Custom dictionary
  • Search across media
  • Pay-as-you-go option
  • Enterprise compliance

What people use each for

The jobs each tool is most often brought in to do.

Smartling

  • A company that wants one supplier answerable for both the translation platform and the quality of the translated outputnot Sonix
  • Marketing sites where a translator needs to see the rendered page, not a spreadsheet of strings, to get tone and length rightnot Sonix
  • Replacing a platform vendor plus several separate agencies with a single contract and a single invoicenot Sonix
  • Content operations at a volume where per-word rates are the dominant cost and the tooling fee is noisenot Sonix

Sonix

  • A journalist transcribing interviews in several languages who needs the transcript searchable and quotable within minutes rather than accurate to a contractnot Smartling
  • A qualitative research team coding focus group transcripts, where speaker separation and an editable transcript matter more than a certified accuracy figurenot Smartling
  • A podcast producer generating subtitle files and show notes from each episode without adding a human transcription suppliernot Smartling
  • A small documentary team subtitling foreign-language footage where transcription and translation in one tool avoids a second vendornot Smartling

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Smartling

  • Translation memory is retained for only 180 days on the Core tier, so the asset that would make a future migration cheap expires on the plan most likely to be used by a team testing the water.
  • The platform subscription is not published while the per-word service rates are, so you can model the variable cost precisely and cannot model the fixed cost at all until you have been through a sales sizing exercise.
  • The vendor earns on words routed through it, so the commercial relationship rewards volume flowing to Smartling rather than volume being avoided through better reuse of existing memory.
  • Per-word pricing multiplies by target language, so adding a market to a product that ships in twelve languages costs a thirteenth of the current translation bill rather than a marginal amount.
  • Minimum contract term, minimum annual spend and whether individual connectors carry their own charge are all absent from the public site, so three of the numbers that determine total cost only appear inside a proposal.

Sonix

  • Monthly hour allowances are small relative to the subscription price: the $25 Core plan includes five hours, which at the published $10 overage rate means the subscription is only worth buying for storage and features rather than for the hours.
  • Unused hours do not accumulate into a meaningful reserve, so an irregular workload of a heavy month followed by a quiet one pays overage in the first and wastes allowance in the second.
  • There is no human correction tier at self-service prices, so anyone with an accessibility or legal accuracy obligation has to add a separate supplier or a member of staff to the workflow.
  • The cited 99 percent accuracy is a best-case figure on clean single-speaker audio, and overlapping speakers, strong accents, technical vocabulary and room noise degrade it enough that editing time, not transcription cost, becomes the real expense.
  • Storage is capped per plan at 25GB to 100GB, and video files consume it fast, so long-running teams end up deleting source media or upgrading a tier for storage they do not otherwise need.

Pricing, plan by plan

Smartling

On request
  • Core$undefined/year
    • Subscription price not published
    • Basic workflow, user and project management
    • Browser CAT editor with visual context
  • Enterprise$undefined/year
    • Subscription price not published
    • Fully configurable dynamic workflows
    • Translation memory with unlimited storage
  • Language services, charged separately per word$undefined/year
    • Machine translation from 0.0075 USD per word
    • AI translation from 0.06 USD per word
    • AI translation with human review from 0.12 USD per word

Sonix

$10/month
  • Pay As You Go$10/month
    • $10 per hour transcribed
    • No subscription
    • 30 minutes free to trial without a card
  • Core$25/month
    • 5 hours a month of transcription and translation
    • 25GB storage
    • $275 a year if billed annually
  • Advanced$50/month
    • 20 hours a month
    • 50GB storage
    • $550 a year if billed annually
  • Pro$80/month
    • 40 hours a month
    • 100GB storage
    • $880 a year if billed annually

Which should you pick?

Choose Smartling if

  • You need translation memory.
  • You work on Web, API.
  • You also want visual context cat editor.
Smartling review

Choose Sonix if

  • You need automated transcription.
  • You work on Web, API.
  • You also want translation.
Sonix review

Questions people ask

Is Smartling or Sonix better?
Neither clearly leads. Smartling starts at On request and Sonix at $10/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Smartling or Sonix?
Smartling starts at On request and Sonix at $10/month.
Does Smartling or Sonix run on more platforms?
Both run on Web, API, so platform support will not decide this one for you.
What is Smartling best used for?
Smartling is most often used for a company that wants one supplier answerable for both the translation platform and the quality of the translated output, marketing sites where a translator needs to see the rendered page, not a spreadsheet of strings, to get tone and length right, replacing a platform vendor plus several separate agencies with a single contract and a single invoice, content operations at a volume where per-word rates are the dominant cost and the tooling fee is noise. Of those, a company that wants one supplier answerable for both the translation platform and the quality of the translated output and marketing sites where a translator needs to see the rendered page, not a spreadsheet of strings, to get tone and length right are not what Sonix is typically brought in for.
What can Smartling do that Sonix cannot?
Smartling covers Translation memory, Visual context CAT editor, Configurable workflows, First-party language services. Sonix covers Automated transcription, Translation, Synchronised editor, Subtitle export.

Answered from the vendors’ own pages

Smartling: Is there a free plan?

The Core tier is advertised as free to start, but translation memory is kept for only 180 days on it and any production deployment is a quoted subscription. Treat it as an evaluation route, not a plan.

Sonix: What does Sonix cost per hour?

$10 an hour on pay-as-you-go, and $10 an hour for any usage beyond the monthly allowance on every subscription tier. That overage rate is published, which is unusual in this market.

Smartling: What does the platform actually cost?

Smartling does not publish it. The published figures are per-word service rates. Expect an annual subscription sized against your content volume, workflows and language count, quoted after a scoping call.

Sonix: Is there human transcription?

No. Sonix is automated transcription plus an editor for you to correct. If you need a contracted accuracy level, this is the wrong category of product.

Smartling: Can I use Smartling with my own translators?

Yes, the platform works with your own vendors and freelancers. You then pay for software and forgo the services revenue the pricing model is built around, which weakens your negotiating position on the subscription.

Sonix: How accurate is it really?

The 99 percent claim assumes clean, single-speaker, standard-accent audio. Multi-speaker recordings with background noise land noticeably lower, and the cost shows up as your editing time.

Smartling: What happens to my translation memory if I leave?

Translation memory is exportable, but on Core it only covers the previous 180 days, so leaving after two years on the entry tier means most of the asset is already gone.

Sonix: How many languages?

Transcription in over fifty languages and translation into a similar number, which is wider than most self-service competitors.

Share

Related pages

More on Smartling

More on Sonix

Keep looking

Other head to heads