Gladia

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Gladia is an AI-powered speech recognition API that provides real-time and async audio transcription with speaker diarization and multilingual support.

AI Categories

speech to text, audio transcription, AI audio, real-time transcription

Pricing Model

freemium

Skill Level

Intermediate

Best For

Technology & SaaS Media & Broadcasting Legal & Compliance Customer Support & Contact Centers

Use Cases

speech-to-text real-time-transcription speaker-diarization audio-intelligence

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4.0/5

Overall Score

Features

Pricing Plans

FAQs

Updated 1 Apr 2026

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What is Gladia?

Gladia is a speech recognition and audio intelligence platform built for developers and businesses that need accurate, fast transcription via API. It is built on top of OpenAI Whisper and proprietary models, offering enhancements such as real-time transcription, speaker diarization, translation, and audio summarization. Gladia is designed to be embedded into third-party applications, workflows, and contact center platforms.

Gladia is an AI-powered speech recognition API that provides real-time and async audio transcription with speaker diarization and multilingual support.

Gladia is widely used by professionals, developers, marketers, and creators to enhance their daily work and improve efficiency.

Key Features

Real-Time Transcription

Gladia supports live audio streaming transcription with low-latency output suitable for real-time applications.

Speaker Diarization

The API identifies and separates individual speakers within an audio file or live stream.

Multilingual Support

Gladia supports transcription and translation across more than 100 languages using its underlying Whisper-based engine.

Audio Intelligence Layer

Beyond transcription, Gladia offers summarization, sentiment analysis, topic detection, and named entity recognition on audio content.

Async Batch Transcription

Users can submit pre-recorded audio files for asynchronous transcription processing via REST API.

Custom Vocabulary

The API allows users to define custom words and phrases to improve transcription accuracy for domain-specific terminology.

Detailed Ratings

⭐ 4.0/5 Overall

Accuracy and Reliability

4.3

Ease of Use

3.5

Functionality and Features

4.5

Performance and Speed

4.4

Customization and Flexibility

4.0

Data Privacy and Security

3.8

Support and Resources

3.8

Cost-Efficiency

3.5

Integration Capabilities

4.5

Pros & Cons

✓ Pros (5)

High Transcription Accuracy Gladia delivers strong accuracy across multiple languages, particularly for clear audio with its Whisper-enhanced engine.

Real-Time API Support The platform supports WebSocket-based streaming transcription, enabling low-latency live use cases.

Audio Intelligence Features Built-in post-processing features like summarization and sentiment analysis reduce the need for additional tooling.

Simple API Integration The REST and WebSocket APIs are well-documented and straightforward to integrate into existing developer workflows.

Multilingual Out of the Box Support for 100+ languages without additional configuration makes it viable for global product teams.

✕ Cons (3)

Developer-Focused Only Gladia has no no-code interface, making it inaccessible to non-technical users without developer assistance.

Cost Scales With Volume Pricing is consumption-based, so high-volume transcription workloads can become expensive relative to self-hosted alternatives.

Accuracy Drops on Noisy Audio Like most Whisper-based systems, transcription quality degrades noticeably with background noise or overlapping speakers.

Who Uses Gladia?

SaaS Developers

They integrate Gladia's API to add transcription and audio intelligence features into their own applications.

Contact Center Platforms

They use Gladia to transcribe and analyze customer calls in real time for quality assurance and agent support.

Media & Podcast Producers

They use it to automatically generate transcripts and subtitles for audio and video content.

Legal & Compliance Teams

They use it to transcribe recorded meetings, depositions, and calls for documentation and audit purposes.

Product Managers & Researchers

They use it to transcribe user interviews and research recordings for analysis.

Pricing Plans

Free

Includes a limited number of free transcription hours per month. Suitable for testing and small-scale development use.

Popular

Pay As You Go

Paid

Consumption-based pricing charged per audio hour transcribed. No monthly commitment required.

Popular

Enterprise

Paid

Custom pricing for high-volume users with dedicated support, SLA guarantees, and advanced security options.

FAQs

4 questions

What is Gladia used for?

Gladia is used to transcribe audio and video content via API, both in real time and from pre-recorded files. It also provides audio intelligence features like summarization, sentiment analysis, and speaker diarization for enriched audio data.

Is Gladia free to use?

Gladia offers a free tier with limited transcription hours for testing and development purposes. Beyond the free tier, pricing is consumption-based per audio hour. Enterprise plans are available for high-volume needs.

How does Gladia compare to AssemblyAI and Deepgram?

All three are developer-focused speech-to-text APIs. Gladia differentiates itself with its Whisper-based multilingual accuracy and bundled audio intelligence layer. Deepgram is generally faster for real-time use cases, while AssemblyAI offers a broader set of pre-built audio intelligence models.

Does Gladia support real-time transcription?

Yes, Gladia supports real-time transcription via a WebSocket-based streaming API. It is suitable for live meeting transcription, call center applications, and any use case requiring low-latency audio-to-text output.

Expert Verdict

Gladia is best suited for developers and technical teams that need a scalable, API-first transcription solution with real-time capabilities and audio intelligence beyond basic STT.

Summary

Gladia provides a developer-focused speech-to-text API with real-time and batch transcription capabilities, supporting over 100 languages and enriched audio intelligence features. It targets SaaS builders, contact centers, and media platforms needing scalable transcription infrastructure.

It is suitable for beginners as well as professionals who want to streamline their workflow and save time using advanced AI capabilities.