Soniox named best-in-class STT for voice agents
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Soniox App

Dictate lesson plans by voice in Portuguese

Type with your voice in any app — up to 4× faster than typing. Built for teachers who need accurate, hands-free text input across 60+ languages. Works with Portuguese and 60+ other languages.

mobileDownload on the App Store and Google Play

Apple App StoreGoogle Store
Free to start, with free credits added every week.

Say it once, it is written in Portuguese

Typing is slow. Speaking is natural. Soniox App turns your voice into finished text as you speak. Get seamless Portuguese transcriptions today.

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Hands-free input

Keep your hands free while composing Portuguese text. Ideal for multitasking or when typing is inconvenient.

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Professional vocabulary

Soniox App handles specialized Portuguese terminology and professional language with accuracy.

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Works in any app

Portuguese Voice Typing works system-wide across all apps and text fields — no integrations or plugins needed.

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Easier on your body

Reduce strain from extended Portuguese typing sessions. Voice Typing lets you write comfortably for longer.

Voice input that works everywhere in Portuguese

Voice Typing works system-wide across all apps — no integrations or plugins needed. Handles Portuguese across varieties like Brazilian Portuguese and European Portuguese.

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One tap to dictate

Activate Portuguese Voice Typing with a single tap and start speaking. Text appears instantly wherever your cursor is.

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60+ languages

Dictate in Portuguese and 60+ other languages with seamless mid-sentence language switching.

text_fields

Works in any text field

Dictate Portuguese into any app or text field — emails, documents, messages, search bars, and more.

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Choose your writing style

Set the tone for your Portuguese text — formal, casual, or anything in between — and Voice Typing adapts the output accordingly.

Portuguese at a glance

Key facts about Portuguese.

Português

native name

280 million

speakers worldwide

9

countries where spoken

Portuguese is spoken in Brazil, Portugal, Angola, Mozambique, Guinea-Bissau, Cape Verde, São Tomé and Príncipe, East Timor, and Equatorial Guinea. Soniox App is trained on real-world Portuguese speech from multiple regions and accents.

Portuguese transcription accuracy

Soniox App is powered by next-gen speech AI model developed inhouse by Soniox. The table below shows how Soniox AI performs on Portuguese transcription compared to 8 other providers.

ProviderWER (Portuguese)Accuracy
Soniox#14.8%95.2%
AssemblyAI8%92.0%
Speechmatics8.1%91.9%
ElevenLabs8.4%91.6%
OpenAI9%91.0%
Azure10.7%89.3%
AWS13.4%86.6%
Deepgram13.4%86.6%
Google34.1%65.9%

Word error rate (WER) measures how many words a speech-to-text engine gets wrong. Lower is better.

Soniox outperforms AssemblyAI, Speechmatics, ElevenLabs, OpenAI, Azure, AWS, Deepgram, and Google on Portuguese transcription accuracy.

Soniox App works with Portuguese and 60+ more languages

Soniox App transcribes and translates in Portuguese and over 60 other languages with professional-grade accuracy.

AfrikaansAlbanianArabicAzerbaijaniBasqueBelarusianBengaliBosnianBulgarianCatalanChineseCroatianCzechDanishDutchEnglishEstonianFinnishFrenchGalicianGermanGreekGujaratiHebrewHindiHungarianIndonesianItalianJapaneseKannadaKazakhKoreanLatvianLithuanianMacedonianMalayMalayalamMarathiNorwegianPersianPolishPortuguesePunjabiRomanianRussianSerbianSlovakSlovenianSpanishSwahiliSwedishTagalogTamilTeluguThaiTurkishUkrainianUrduVietnameseWelsh

Soniox App: The all-in-one AI speech toolkit

Smart Scribe, Translator, and Voice Typing cover three ways people work with speech.

Smart Scribe

Caption Portuguese conversations live

App feature Smart Scribe
See Smart Scribe arrow_forward

Translator

Translate Portuguese and 60+ other languages live

App feature Translator
See Translator arrow_forward

Voice Typing

Speak to type in Portuguese

App feature Voice Typing
See Voice Typing arrow_forward

One app. Everything you do with voice in Portuguese.

Get started free

Transcribe conversations in real time with Soniox.

mobileDownload on the App Store

Apple App StoreGoogle Store
Free to start, with free credits added every week.

Learn everything Soniox can do

Need more details? The Soniox Help Center provides complete documentation for the app, including guides, videos, screenshots, and feature walkthroughs.

Learn how to use Smart Scribe, Translator, Voice Typing, and more.

Explore the Help Center

Built for any use case

From clinical documentation to creative workflows, Soniox App is built for the situations where accurate transcription and translation matter most.

groups

Meeting transcription

Capture every decision and action item from meetings automatically.

school

Lecture transcription

Record complete lecture transcripts for study and accessibility.

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Medical dictation

Document clinical encounters hands-free with professional accuracy.

hearing

Hearing accessibility

Real-time captions for deaf and hard-of-hearing users in any setting.

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Travel translator

Communicate across language barriers with real-time spoken translation.

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Voice notes

Capture ideas and thoughts hands-free and turn them into searchable text.

Private by default

Soniox never stores your recordings and never uses your audio to train models. Everything is processed securely in real-time, then gone.

Portuguese language trivia

Olá - that's how you say hello in Portuguese.

History and background

  • history

    Portuguese is the most spoken language in the Southern Hemisphere.

  • history

    Brazil, with over 210 million people, is the largest Portuguese-speaking country.

  • history

    Portuguese spread globally through maritime exploration in the 15th and 16th centuries.

Distinctive features

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    Portuguese has nasal vowels and diphthongs that distinguish it from Spanish.

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    Portuguese has a personal infinitive that can be conjugated for person and number — rare among world languages.

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    The future subjunctive tense is actively used in Portuguese, unlike in Spanish where it is archaic.

Dialects and varieties

Brazilian PortugueseEuropean PortugueseAfrican Portuguese

Official language in

BrazilPortugalAngolaMozambiqueGuinea-BissauCape VerdeSão Tomé and PríncipeEast Timor

Related languages we support

SpanishGalicianFrenchItalian

Frequently asked questions about Portuguese dictate lesson plans by voice

Does Soniox App work for Portuguese speakers across different countries?arrow_downward
Yes. Portuguese is spoken across Brazil, Portugal, Angola, Mozambique, Guinea-Bissau, Cape Verde, and 3 more countries, and every region has its own accent, pace, and everyday vocabulary. Soniox App is trained on real-world Portuguese speech from multiple regions, so it stays accurate whether you are at home or traveling to another Portuguese-speaking country.
How well does Soniox App handle Portuguese as it is actually spoken day to day?arrow_downward
Very well. Portuguese has 280 million speakers across 9 countries, and it sounds noticeably different depending on where you are. Most tools are trained on one standardized accent and struggle the moment speech gets regional, fast, or casual. Soniox App is trained on real-world Portuguese from multiple regions, so it stays accurate regardless of who is speaking or where they are from.
How accurate is Soniox for Portuguese compared to other providers?arrow_downward
Soniox achieves a 4.8% word error rate for Portuguese, outperforming AssemblyAI, Speechmatics, ElevenLabs, and 5 other providers in independent benchmarks. Lower word error rate means fewer mistakes in your transcripts.
What writing system does Portuguese use?arrow_downward
Portuguese is written in the Latin script. The script uses diacritical marks to convey additional phonetic information. Soniox App handles Portuguese text natively, including all script-specific characters.
Does Soniox handle different Portuguese dialects?arrow_downward
Portuguese has several recognized varieties, including Brazilian Portuguese, European Portuguese, and African Portuguese. Soniox is trained on diverse Portuguese speech data, so it handles regional variation and dialectal differences effectively.
What language family does Portuguese belong to?arrow_downward
Portuguese belongs to the Indo-European > Romance > Western Romance language family. Among the languages Soniox supports, related languages include Spanish, Galician, French, and Italian. Understanding these linguistic relationships helps Soniox deliver better accuracy across language families.
What is Soniox App?arrow_downward
Soniox App is a real-time speech app that turns spoken conversations into text and translations instantly. You can transcribe, translate, dictate, and summarize speech across 60+ languages — live, as people speak.
Is Voice Typing faster than typing?arrow_downward
For most people, yes. Speaking is typically up to 4× faster than typing, especially for longer text.
Where can I use Voice Typing?arrow_downward
You can use Voice Typing across apps and text fields — wherever you normally type — on supported platforms.
Is my audio or data stored?arrow_downward
No. Soniox App never stores your audio or uses it to train models. Text outputs are stored only to provide the service to you and are never used for model training.
Is Soniox App free to use?arrow_downward
Yes. Soniox App offers free usage to get started, with paid plans available for unlimited and advanced features.