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URL: https://www.gladia.io/

⇱ Gladia | AI Audio Infrastructure for Voice Products

Solaria-3

9.6% WER on real English audio · strongest gains across EN, FR, DE, ES & IT

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APIs
Real-time STT First fully multilingual real-time transcription engine with <300ms latency
Batch STT Asynchronous transcription and add-ons with no hallucinations
Models
Solaria-3 Built for real production audio — noisy, fast-paced, and conversational
New

Feature: Partials

Achieve faster, smoother real-time conversations with partial transcripts in <100 ms.

Learn more
Use Case
Customer experience Real-time AI to boost productivity of contact center agents
Sales intelligence AI transcription and insights to supercharge sales calls
Meeting assistants Flawless transcription for LLM-based AI assistants with note-taking capabilities
Media Streamlined editing and subtitles with time-stamped transcription
Industry
Voice agents AI-powered productivity for voice-based customer interactions
Contact center as a service (CCaaS) Flexible AI transcription for scalable contact center solutions
Business process outsourcing (BPO) Smart transcription tools for efficient outsourced operations
Playground Explore our APIs with a dedicated playground app
Documentation All you need to know to get started with Gladia
Discord Where our community lives
Status Real-time updates on the status and performance of our services
Free tier

Test Gladia in action

Take a tour of our playground and explore core API features — no credit card required.

Try for free
Blog Read our latest articles about speech-to-text, LLMs and more
Library Discover our ebooks, webinars, guides, and more
Whisper TCO Calculator Calculate the cost of ownership of hosting open-source Whisper ASR
Real-time API benchmarks Comparing Gladia's performance against pure players
Compliance Hub See how Gladia protects and manages your data
Featured

STT Voice agent buyer's guide

A clear framework for technical leaders evaluating STT vendors — all essential criteria in one guide.

Get the copy
About us Our team and company story
Careers For current job openings
Press Our latest press features, media kit and boilerplate
Partners Join our ecosystem of partners
Testimonials Hear the voices that shape our story
Series A

Our road to real-time audio AI

$16M in series A funding — speed, accuracy, and insight, finally delivered at scale.

Learn more
Live 19,854,990 hours of audio transcribed

Turn audio into your
most valuable dataset

Gladia is the end-to-end audio infrastructure to record, transcribe and enrich audio through a single API — with precise key entity capture, true multilingual support and 100% EU data residency.

Explore
2B+ Minutes transcribed
300K+ Developers
99.95% Uptime SLA
Trusted by over 300,000 users and 2,000+ enterprise teams
How it works

The foundation of every voice product

Bad speech-to-text doesn't just stay in the transcript — it corrupts everything downstream. We make the rest of your stack reliable.

Step 1

Capture

Upload audio or video from any source — live streams, uploads, or real-time mic input.

  • WebSocket streaming, REST upload, and live mic input
  • Any audio format — MP3, WAV, FLAC, Opus, and more
  • SDKs for Python, Node.js, and direct API access
  • Native meeting bot integration (Zoom, GMeet, Microsoft Teams) on demand
Step 2

Transcribe

Transform audio into a clean, editable transcript — regardless of how noisy, multilingual, or jargon-heavy the input may be.

  • Top accuracy on conversational audio (Switchboard)
  • #1 speaker detection on the market (pyannoteAI)
  • 100+ languages, with accent-sensitive automatic detection
Step 3

Enrich

Enrich the raw transcript with native audio intelligence features at no additional cost.

  • Audio-to-LLM pipeline (native or BYOM)
  • PII redaction for sensitive data
  • Semantic sentiment analysis
  • Entity detection (names, emails, addresses)
Step 4

Integrate

Push enriched data to power your downstream workflows and enrich your stack, with enterprise-grade security at every step.

  • Push to your CRM, database, or data warehouse
  • Webhooks, Zapier, and 50+ native integrations
  • SOC 2 Type II certified, GDPR compliant
Microphone
Phone Call
Video Stream
Audio stream received
Live Transcript Streaming
EN 284ms
00:12 We've been seeing a 40% increase in API calls this quarter
00:15 That's significant. What's driving the growth?
142 words
Named Entity Recognition
14 entities
PERSON ORG DATE
Sentiment Analysis
94% confidence
Overall Positive
Summary & Topics
2 topics
KEY TOPICS
Revenue Growth API Scaling
✓Connected
Salesforce CRM
Contact created✓
Call log synced✓
✓Sent
Email Digest
Recipients3 users
Summary included✓
✓Connected
Webhook / API
Endpoint/webhooks/transcript
Payload size4.2 KB
Pipeline complete · 3.29s total
Powered by Gladia Audio Intelligence API
Product

Why teams build on Gladia

Accurate, multilingual transcription with built-in audio intelligence.
Designed for developer velocity, with enterprise security standards in mind.

Built for the world, not just English

Real conversations rarely stay in one language. Your STT layer needs to handle accents and noisy audio without forcing a different stack per market.

Accuracy that compounds

Transcription is the foundation for everything downstream. Your assistant, CRM, and coaching workflows are only as reliable as this first layer.

Built-in audio intelligence

Every conversation carries useful signals. Access speaker turns, sentiment, and action items without chaining multiple providers.

Enterprise-grade infrastructure

The best transcription layer is the one your team never has to think about. No capacity planning or manual failover, just reliable scale and data handling.

Ship in hours, not weeks

Gladia plugs into the voice stack your team already runs. Native integrations and SDKs mean less middleware and fewer moving parts to audit.

Comparison

See the difference, at a glance

Compare Gladia across key capabilities that actually matter in production.

Feature
Gladia
Deepgram
AssemblyAI
Speechmatics
ElevenLabs
Async / batch STT
Real-time STT
Languages (async)
100+
30+
99
55+
90+
Languages (real-time)
100+
30+
6 only
55+
90+
Code-switching
Speaker diarization
Included
Add-on ($)
Add-on ($)
Included
Included
Named entities
Included
Limited
Custom vocabulary
Sentiment analysis
Summarization
Partial
Audio-to-LLM
Partial
EU & US hosting
Yes, with EU for Enterprise-only
Certifications
SOC 2 Type II, GDPR, HIPAA, ISO 27001
SOC 2 Type II, HIPAA
SOC 2 Type II, HIPAA
SOC 2 Type II, GDPR, HIPAA, ISO 27001
SOC 2 Type II
Data training opt-out
By default
Paid opt-out
Paid opt-out
Paid opt-out
Unclear
On-premise
Ready to build with Gladia?
Start for free with 10 hours of audio processing. No credit card required.
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Testimonials

Voices that shape our story

We power products with millions of monthly active users worldwide.
Here's how they feel about working with us.

👁 Matthias Wickenburg
Matthias Wickenburg CTO & Co-founder at Attention
CCaaS

The speed and accuracy improvements were game-changers. We cut transcription time by 95% and the multilingual support is unmatched.

👁 Farid Issabhaï
Farid Issabhaï Staff Engineer at Aircall
👁 Amanda Zhu
Amanda Zhu Co-Founder at Recall

Gladia's real-time code-switching has been a real 'wow' factor! Plus, the accuracy of transcription has been excellent.

Meeting Assistants
Meeting Assistants

Gladia's real-time code-switching has been a real 'wow' factor! Plus, the accuracy of transcription has been excellent.

👁 Amanda Zhu
Amanda Zhu Co-Founder at Recall
Media

We are 100% benchmark & evaluation driven. Gladia was one of the best providers selected on merit to transcribe user videos.

KH
Kojo Hinson CTO at VEED
Meeting Assistants

We initially attempted to host Whisper AI, which required significant effort to scale. Switching to Gladia brought a welcome change.

👁 Robin Lambert
Robin Lambert CTO at Livestorm
👁 Kwin Kramer
Kwin Kramer Co-Founder at Daily

We just plugged in Gladia Solaria model — ultra-fast, crazy accurate transcription in 100+ languages. The results are incredible.

Video & Voice
Video & Voice

We just plugged in Gladia Solaria model — ultra-fast, crazy accurate transcription in 100+ languages. The results are incredible.

👁 Kwin Kramer
Kwin Kramer Co-Founder at Daily
Sales Intelligence

Everything we do based on transcription became better after we switched to Gladia. The accuracy across European languages has been transformative.

👁 Valentijn van Gastel
Valentijn van Gastel CTO at Carv
Media

Having tried numerous STT solutions, I can confidently say: Gladia's API outshines the rest. Its balance of accuracy, speed, and precise word timings is unparalleled. It's become the backbone of our entire subtitling pipeline.

👁 Jean Patry
Jean Patry Co-Founder at Mojo

The future is voice-first

At Gladia, we believe that the future of human–machine interaction is voice. Our mission is to deliver an audio infrastructure that will give voice products true intelligence across every conversation. Build it together with us.

Start buildingStart building Talk to sales
Why Gladia

Built for the world, not just English

Real conversations rarely stay in one language. Your STT layer has to keep up with multiple languages, accents, and noisy audio - without requiring your team to ship a different model or stack for each market.

Gladia was built for 100+ languages from the start, including seamless switching when speakers change languages mid-sentence. The same endpoint handles global support conversations, multilingual voice agents, and media workflows with consistent behavior across locales.

Designed for your global expansion

  • Native code-switchingHandle sentences that shift languages mid-flow without breaking structure or timestamps.
  • Accent resilienceRobust on non-native speakers and regional accents, not just studio English.
  • Any-to-any translationTranslation returned alongside the transcript in the same API call.
  • Locale-level consistencySame latency, pricing, and SLA across every supported language.
Why Gladia

Accuracy that compounds

Transcription lays the foundation for everything built on top of it. Every downstream system – such as your assistant, CRM, or coaching model – is only as reliable as the words captured in the first layer.

Designed for real-world noisy audio, Gladia combines high-performance ASR with enterprise-grade post-processing - including advanced hallucination filters - to capture names, numbers, emails, and domain-specific jargon accurately at the source. The output is reliable enough to feed directly into automation, RAG pipelines, and models.

Built for error-proof downstream workflows

  • Named entity recognitionNames, companies, emails, dates - structured at the source.
  • Custom vocabulary & spellingTeach your domain once, reuse across every pipeline and team.
  • Context-aware formattingPunctuation, casing, numerals ready for CRMs and LLMs.
  • Reproducible benchmarksOpen methodology, so procurement and audit teams can verify claims.
Why Gladia

Built-in audio intelligence

Every transcribed conversation is packed with insights. Metadata like who spoke when, how sentiment evolved, and what actions to take next should be accessible to everyone – without chaining multiple providers or paying a premium.

At Gladia, diarization, sentiment, and structured outputs live alongside the core STT layer. Our Audio-to-LLM pipeline turns conversations into structured data your models can act on directly. Choose from integrated LLM options or bring your own model.

From audio to decisions, natively

  • Speaker diarizationKnow who said what, with speaker-level confidence and timestamps.
  • Sentiment analysisSignals ready to feed into routing, QA scoring, and CX dashboards.
  • Summaries & action itemsNative outputs — no second-hop LLM call to maintain.
  • Audio-to-LLM contractSummaries, action items, entity extraction, sentiment, and more.
Why Gladia

Enterprise-grade infrastructure

The best transcription layer is the one your team never has to think about. No capacity planning, no DevOps overhead, no manual failover - just complete trust in your provider's ability to handle your volumes and data reliably.

Headquartered in the EU, we architect sovereignty and regulatory expectations from the product level. Our API processes billions of minutes of audio every year, with the operational discipline teams expect from a foundational AI infrastructure.

A straightforward story for security & legal

  • Full compliance stackGDPR, HIPAA, SOC 2 Type II, and ISO 27001 — documented and audited.
  • EU data residencySovereignty by design, not a contract addendum.
  • No training on your audioContractual, not marketing — verifiable in the DPA.
  • Enterprise support & SLAsNamed contacts, incident review, and predictable latency at scale.
Integrations

Ship in hours, not weeks

Gladia plugs into the voice stack enterprise teams already run: native integrations, official SDKs, and a developer-first API. Less middleware to maintain, fewer moving parts to audit.

Whether you build on Pipecat, LiveKit, Twilio, or orchestrate workflows through Zapier and Make, Gladia connects natively. Teams that would have spent weeks integrating or maintaining self-hosted solutions are in production the same day, with direct Slack support to help along the way.

Fits perfectly with your stack

  • Native voice stack integrationsPipecat, LiveKit, Twilio, and Retell out of the box.
  • Official SDKsPython, Node.js, and WebSocket streaming with reference clients.
  • Webhooks & async jobsResults delivered the moment processing completes.
  • Workflow automationFirst-party connectors for Zapier, Make, and n8n.