Hindi speech-to-text API for AI voice agents

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Why Soniox is the best speech-to-text API for Hindi AI voice agents

“Best” for Hindi voice agents isn’t just about top benchmark scores on clean audio, it’s about predictable, reliable behavior in real production systems.

To serve a potential market of over 600,000,000 Hindi speakers primarily in India, with speakers around the world, Hindi AI voice agents requires a deep understanding of regional accents and a predictable behavior in live production.

A speech-to-text system for Hindi voice agents should:

Deliver highly accurate transcription that keeps up with live Hindi conversations.
Run with ultra-low latency, enabling real-time LLM processing and fast responses.
Reliably detect end-of-turn speech so agents respond at the right moment.
Perform in real-world conditions with noise, accents, interruptions, and multilingual speech.
Scale economically, with pricing that works for high-volume deployments.

Soniox is built around these requirements from the ground up, delivering fast, reliable speech recognition for voice agents for Hindi and all other 60+ supported languages. One unified model supports true multilingual and language-switching speech, without changing configurations, switching models, or restarting streams.

With real-time Hindi language transcription starting at ~$0.12 per hour, Soniox makes it practical and cost-effective to deploy Hindi voice agents at massive scale, anywhere.

“As the leading provider of voicebots for automotive dealerships in Germany, we’ve faced significant challenges recognizing license plates accurately. Soniox has solved this problem with exceptional recognition of alphanumeric sequences, resulting in a much higher acceptance rate for our voicebot.”

Dr. Steven Zielke,
Founder & CEO of mobilApp

Lowest-latency Hindi speech-to-text in practice

Low latency in voice agents isn’t achieved through a single optimization. It’s the result of an end-to-end system: streaming Hindi audio, real-time decoding, turn detection, and fast transcript delivery, working together so agents can respond naturally without waiting for full utterances.

The Soniox API is built for this. Developers can configure transcription behavior to match their agent’s requirements, balancing responsiveness, accuracy, and conversational timing in production.

Real-time Hindi streaming transcription

At the core is a real-time speech-to-text engine built for continuous conversational streams rather than offline batch requests.

Audio is streamed over a persistent connection, and transcripts are returned immediately as speech arrives. This enables Hindi voice agents and downstream LLM systems to begin reasoning and responding in real time, without waiting for the user to finish speaking.

chevron_rightLearn about Hindi real-time transcription

Endpoint detection for Hindi conversations

Knowing when a user has finished speaking is just as important as knowing what they said.

Soniox includes built-in endpoint detection that identifies speech boundaries and emits end events. Hindi AI voice agents can use these events to decide when to respond without relying on fragile client-side silence timers.

The result is smoother turn-taking, fewer interruptions, and faster, more natural conversations.

chevron_rightUnderstand endpoint detection

Custom context with Hindi vocabulary

Transcription quality shouldn't drop when users mention specific Hindi brands or regional terms.

Soniox supports request-time context feature, allowing developers to inject domain-specific Hindi vocabulary, such as product names, jargon, entities, or topic knowledge, directly into the transcription stream.

This improves accuracy through simple configuration, without maintaining separate fine-tuned models for every agent or use case.

chevron_rightRead more about context customization

Precise multilingual transcription for 60+ languages including Hindi

Voice agents often need to handle users who switch between Hindi and other languages mid-sentence.

Soniox delivers highly-accurate real-time Hindi transcription and translation using a single model. Language identification happens automatically, keeping the conversation fluid without reconnecting the stream.

chevron_rightSee supported languages list

Data residency for industry compliance

For many production voice agents, data residency isn’t optional, it’s a compliance requirement. Regulated industries such as healthcare, legal, finance, and enterprise environments often require that speech and transcript data remain within specific geographic regions.

Soniox supports regional data residency, allowing voice agents to operate in regulated deployments while keeping customer data within required boundaries, all through the same real-time API.

chevron_rightGet more details about data residency

Putting it all together

Voice agents demand more than high benchmark accuracy. They require speech recognition that is fast, predictable, multilingual, and reliable in real-world production conditions.

Soniox brings these capabilities together in a single real-time API: ultra-low latency streaming, built-in turn detection, context control, speaker-native accuracy for Hindi and across 60+ other languages, and regional data residency for regulated deployments.

If you're building Hindi voice agents that need to run at scale, Soniox is the speech layer designed for production.

Start building with Soniox API

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Use Soniox in popular frameworks

Hindi voice agents for every use case

smart_toy

Smart assistants in Hindi

Deliver fast, natural voice interactions in Hindi to help answer questions or complete tasks in speaker's native language.

support_agent

Customer support

Support agents can instantly handle Hindi-speaking customers without any model switching, resolving issues much faster.

mobile_sound

In-app voice agents

Add natural Hindi voice automation directly into your app – from onboarding to scheduling to self service – with fast, structured responses.

phone_forwarded

Call routing agents

Identify intent early and respond immediately, even before the user finishes speaking. No phone menus necessary.

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Privacy and compliance, built right in

Never stored, never saved.

Audio stays in memory, everything is processed in real-time.

Built for privacy-critical use cases.

SOC 2 Type II–certified and HIPAA-ready from day one.

Trusted where privacy matters most.

Used in industries where speech is sensitive — from healthcare to enterprise.

SOC 2 Type 2 compliant

HIPAA compliant

GDPR compliant

Power up your Hindi AI voice agent

Production-ready speech recognition for Hindi and 60+ other languages.

Frequently asked questions about Soniox Speech-to-Text API for Hindi AI voice agents

What is the Soniox Speech-to-Text API for Hindi?arrow_downward

Soniox provides a real-time Hindi speech-to-text API designed for AI voice agents. It converts live Hindi speech into text with low latency, supports streaming use cases, and works alongside more than 60 other languages without switching models or restarting the stream.

Is Soniox suitable for building Hindi AI voice agents?arrow_downward

Yes. Soniox's multilingual AI speech models can easily handle real-time Hindi voice agent workflows, including streaming transcription, early token delivery, and endpoint detection for conversational turn-taking, all configurable through the API.

What makes Soniox a low-latency Hindi speech-to-text API?arrow_downward

Soniox uses a real-time streaming architecture that processes Hindi audio continuously and emits transcription results incrementally as speech arrives. This allows voice agents to begin processing Hindi speech before an utterance is complete.

How does Soniox detect when Hindi-speaking users finish talking?arrow_downward

Soniox includes built-in endpoint detection that identifies speech boundaries in Hindi. Voice agents can use emitted end events to decide when to respond without relying on client-side silence timers.

Can I customize transcription behavior for Hindi voice agents?arrow_downward

Yes. The Soniox API is configurable, allowing developers to adjust transcription behavior for Hindi speech, including custom context for domain-specific vocabulary, eliminating the need for separate fine-tuned models.

Can Soniox handle language switching involving Hindi within a conversation?arrow_downward

Yes. Soniox can recognize and transcribe speech when speakers switch between Hindi and other supported languages mid-sentence or mid-conversation, without requiring stream restarts or language-specific routing.

Is Soniox suitable for regulated industries using Hindi speech?arrow_downward

Yes. Soniox supports data residency for regulated environments such as medical and legal use cases, allowing Hindi speech and transcript data to remain within required geographic regions while using the same real-time API.

Is Hindi audio stored when using the Soniox API?arrow_downward

No. Hindi audio is processed in real-time and kept in memory only. Soniox is designed for privacy-critical voice agent applications where speech data should not be stored by default.

How do developers get started with Hindi speech-to-text in Soniox?arrow_downward

Developers can generate an API key on Soniox Console and start streaming Hindi audio over WebSockets to Soniox immediately. The API integrates with common voice agent frameworks and real-time media pipelines.