Overview

Soniox is a transcription and translation service built around an API, with support for 60 languages, speaker identification and timestamps. It suits developers and teams integrating speech processing into existing workflows. The main trade-off is that the plan descriptions give a clear feature promise for Pro but no usage caps to help buyers estimate what “unlimited” means in practice.

Key features

Support for 60 languages gives Soniox a broad language range for applications that serve multilingual users. Speaker identification and speaker labels can help distinguish who said what, while timestamps make it easier to connect transcript text to points in an audio recording. These features are relevant when an integration needs structured transcript output rather than plain text.

API access is the product’s defining fit: Soniox is suited to adding transcription and related capabilities to software, not to buyers seeking a range of consumer apps or desktop platforms. The platform is listed as API-only, so teams should choose it for integration rather than expecting a native mobile or desktop experience.

Pricing

Soniox uses a freemium model. The Free plan costs 0.00 USD per free, with credits added every week. Weekly credits provide a way to evaluate or use the service without a subscription, but the plan’s usage ceiling is determined by those credits.

Pro costs 19.99 USD per month, billed once per month, and includes unlimited transcription, unlimited translation and unlimited AI actions. It is the clearest fit for an individual or team that needs those capabilities regularly and prefers a monthly subscription. The plan description does not give a seat count or a numeric usage allowance, so buyers should not assume a particular team size or volume beyond the stated unlimited features.

Business costs 30.00 USD per month with per-user billing. That makes the price scale with the number of users, unlike Pro’s stated monthly price. Its plan description does not identify additional features, so the practical reason to consider it is the per-user billing structure rather than a stated capability difference.

Platforms

Soniox is available as an API. That makes it relevant to developers who can build it into their own products or workflows, but a poor match for buyers who want a standalone iOS, Android, desktop or web app.

Who it's for

Soniox is strongest for builders who need multilingual speech processing through an API and value speaker labels and timestamps in their output. The weekly-credit Free plan can suit early evaluation or light use; Pro is the straightforward subscription choice for recurring transcription, translation and AI actions. Teams comparing per-user costs can consider Business, while those who need a ready-made note-taking app should look at app-oriented alternatives instead.

Pros and cons

Pros: 60 supported languages broaden its usefulness for multilingual products.
Pros: Speaker identification and timestamps add structure that can make transcripts more useful in downstream workflows.
Pros: Pro combines unlimited transcription, translation and AI actions for 19.99 USD per month.
Cons: The API-only platform is not a direct fit for people looking for a finished recording or note-taking app.
Cons: Business is billed per user, and its stated plan description does not explain what it adds beyond that billing model.

Alternatives

For people choosing among voice and transcription tools, these AI Voice Note Apps, Voice Note Apps, Transcription Software, Speech-to-Text Software, Speech Recognition Software and Audio Transcription Software directories offer broader category comparisons.

Audionotes is a better fit for people who want a multi-platform voice-note app, with a free plan that includes one-minute voice notes, transcripts and summaries in 99+ languages. AudioPen is another app-oriented option, with a free tier for recordings up to three minutes and transcription and rewrite features.

Memex is worth considering for users who want a free Android or iOS app and are willing to configure a model service for AI features. Memoth offers extension, iOS and macOS access, including a free account plan with a 10-minute monthly allowance.

Cleft is a better match for iOS and macOS users who want five-minute recordings, on-device transcription, tags, search and export in its free Basic plan. Dayheld is an iOS alternative. Humoze suits web users seeking a free plan with five hours of AI transcription per month, summaries and up to three notebooks. Memonium is an iOS and macOS option with seven lifetime memos on its free plan.

Verdict

Choose Soniox if you are building a product or workflow that needs API-based transcription across many languages, with speaker identification and timestamps, and Pro’s stated capabilities fit your recurring use. Look elsewhere if you need a ready-to-use app, want a clearly quantified free allowance, or need to compare team costs against a defined Business feature set.

	pmTrans	Soniox
Free plan	No	Yes
Free trial	No	No
Paid from	—	$19.99/mo
Open source	No	No
Platforms	—	api
Free plan	Yes	Yes
Speaker identification	No	Yes
Timestamp support	Yes	Yes
API access	No	Yes
Paid from	—	19.99 /mo
Languages supported	—	60 languages

pmTrans vs Soniox

pmTrans

Soniox