Gladia is an advanced AI-powered audio transcription API designed for real-time and asynchronous speech-to-text, serving businesses, developers, and AI solution providers that require fast, accurate, and multilingual transcription. Built on proprietary models like Solaria and Whisper-Zero, Gladia offers ultra-low latency (<300ms), support for over 100 languages, and a rich API that goes beyond basic transcription to include diarization, translation, summarization, and more. Its focus on precise, flexible audio intelligence and developer-centric integrations makes it well-suited for use in contact centers, virtual meetings, sales enablement, media production, and speech AI solutions.
Gladia aims to give platforms a powerful but simple audio-to-text backbone. Whether you have a recorded file, a live call, or a stream, Gladia’s API converts speech into structured text fast and reliably. The system handles diverse audio sources: multiple languages, mixed accents, noisy environments, and even code-switching between languages in a single conversation.
Beyond plain transcription, Gladia offers a set of “audio intelligence” extensions: speaker diarization (so you know who spoke when), word-level timestamps, named-entity recognition (extracting names, places, key data), sentiment analysis, summarization, translation, and more.
The API uses standard web protocols and works with almost any tech stack or telephony protocol (SIP, VoIP, Asterisk etc.), making integration straightforward.
Gladia’s flexibility makes it useful across many domains: meeting-recording tools, media editors, content-creation platforms, customer support centers, CRM systems, podcasts, legal or medical transcription, and any setup that handles spoken content.
Users can start with a free tier (a limited number of free transcription hours) and then scale usage as needed, or move to pay-as-you-go / enterprise plans depending on volume.
Offers one of the fastest real-time transcription APIs, with latency below 300ms
Supports more than 100 languages natively, making it highly versatile
Integrates advanced features like speaker diarization, punctuation, and custom vocabulary directly in the API
Accurate transcription even in noisy or dynamic environments, thanks to proprietary models
Compliant with GDPR, HIPAA, and SOC 2 for data privacy and security
Ultra-fast real-time transcription with latency under 300 milliseconds
Highly accurate speech-to-text transcription supporting over 100 languages and dialects.
Transcription accuracy for highly specialized or technical jargon may depend on proactive use of custom vocabularies and tuning
Occasional delays reported when handling extremely large audio files or heavy concurrent requests
Lack of a drag-and-drop web UI primarily API-based, with limited no-code/low-code interface support
Some advanced features are only available in higher-tier or enterprise plans
