Spanish speech-to-text transcription and translation
Designed for real-world Spanish conversations
Spanish is spoken by over 500 million people worldwide — across Spain, Mexico, Colombia, Argentina, Peru, Venezuela, Chile, and beyond. But most speech-to-text solutions struggle with real-world Spanish, which comes with regional accents, fast speech, background noise, or mixed languages.
Understand how Spanish is really spoken.
Accents, slang, fast speech, code-switching, and overlapping dialogue? No problem. Soniox handles the Spanish used in real conversations with ease.
Transcribe and translate instantly - in one call.
Use a single API call to transcribe or translate Spanish into English and other languages, as it's being spoken. Get token-level output in mere milliseconds.
Industry-leading accuracy in any condition.
Get top-tier accuracy on Spanish audio with a Word Error Rate of just 5.3% — even in challenging conditions with multiple speakers, overlapping speech, and real-world noise.
Built for production and scale.
Supports real-time (streaming) and asynchronous (batch/file) Spanish transcription, structured JSON output, low latency, and reliable back end.
Use Soniox anywhere Spanish is spoken
Build Spanish-speaking agents and assistants
Power fast and responsive voice agents that understand, transcribe, and respond to Spanish.
Capture clinical conversations in Spanish
Securely transcribe medical conversations and generate structured notes in Spanish.
Generate live Spanish captions and translations
Turn Spanish podcasts, interviews, and videos into ready-to-publish subtitle files and live captions.
Transcribe and translate Spanish on wearable devices
Power hands-free voice features on smartwatches, glasses, and fitness devices.
Built-in tools for Spanish speech-to-text
Everything you need for real-time Spanish transcription and translation - built right into the Soniox API.
- Real-time streaming and async support
- On the fly language detection
- Speaker-aware diarization with punctuation
- JSON formatted and production-ready
- Translate between Spanish and 60 other languages
Spanish transcription with industry-leading accuracy
Never miss a word in Spanish, even when it's fast, messy, accented, or hard to hear. That accuracy means fewer errors, better UX, and apps people can trust.
- Streams fluent, full-sentence output in real time
- Handles regional Spanish accents, noise, and overlapping speech
- Built to perform across real-world conditions
Soniox outperforms other providers for Spanish accuracy (async model):
| Provider | Spanish WER |
|---|---|
| Soniox | 5.3% |
| OpenAI | 14.5% |
| 14.4% | |
| AWS | 11.4% |
| Azure | 9.5% |
| Deepgram | 10.1% |
| AssemblyAI | 7.1% |
| Speechmatics | 7.1% |
| ElevenLabs | 8.7% |
Don't take our word for it. Use your own Spanish audio to compare Soniox against other providers live.
Compare nowBenchmark reportFor developers
Build fast, accurate Spanish voice features - live agents, subtitles, notes - all in one API. It's easy to add Spanish voice capabilities to any app, bot, or tool.
Get API key For everyone
Transcribe, translate, and summarize Spanish conversations on the go. Record live audio and get instant results - perfect for meetings, travel, or everyday conversations.
Get the App Frequently asked questions
How is Soniox different from other Spanish speech APIs?
Most speech APIs are designed for lab conditions and struggle with real-world Spanish speech and conversations, which can include fast talkers, messy audio, regional accents, interruptions, and more. Soniox is speaker-aware and can deliver live, fluent, and organized output with incredible accuracy. Use our live compare tool to test us against other providers.
Is Soniox just for transcription, or can I use Soniox to translate Spanish speech as well?
You can transcribe and translate Spanish in real time with a single API call, even when there are multiple languages being spoken at once. Perfect for multilingual meetings, support conversations, travel, or accessibility tools.
What types of apps can I build with Soniox?
Anything that needs to quickly and accurately understand Spanish speech. Think: voice agents, call centers, media transcription, meeting assistants, wearable tools, medical note systems, and more.
What does the output look like?
You get structured JSON with words, timestamps, speakers, and optional translation. All ready to use in production. Check out our API docs.
How fast is Soniox?
Soniox streams transcription in milliseconds, with token-level updates and sentence-level fluency.
How much does Soniox cost?
For most use cases, it's simple: $0.10/hour for async (file uploads) and $0.12/hour for real-time (streaming). For advanced use cases with translation, custom context, or fine-grained control, pricing is based on token usage. See more on our pricing page.
Go global with one API
Get production-ready speech-to-text recognition, transcription, and translation in 60+ languages.