Speechmatics: Accurate and Secure AI Voice Transcription

Speechmatics is an automatic transcription tool powered by artificial intelligence, offering enterprise-level speech recognition. It belongs to the AI transcription category and converts audio or video into text quickly, accurately and scalably. Its differential proposition is inclusive: it supports over 55 languages and dialects, with robustness against regional accents and noisy environments, and handles conversations with language mixing. Additionally, its deployment flexibility (cloud, on-premises or even on devices) allows SMEs and teams with specific privacy requirements to maintain control over their data.

For small and medium enterprises, this technology reduces operational times, standardizes documentation and allows analyzing conversations without depending on costly manual processes.

AgentAya Verdict: Speechmatics

This is a good solution, especially competent in real scenarios with multiple speakers, background noise, diverse accents and language mixing. Its application programming interface (API) combines real-time and batch transcription with analysis functions, topic detection and custom dictionaries, fitting both simple needs and custom integrations.

For international SMEs, the key value is in privacy by default (no data logging except express configuration), the option of local deployment and quality in multiple languages. This facilitates call audits, minutes preparation and subtitling with data sovereignty. The learning curve is moderate if integrated by API, but documentation and practical examples speed up startup.

Speechmatics combines linguistic precision, security and deployment flexibility. It’s ideal for SMEs needing reliable results and data control. It may be less « visual » than alternatives focused on a very guided interface, but its technical power compensates amply.

Score Breakdown

Category	Score	Brief Comment
Features and Functionality	⭐⭐⭐⭐ (4.0)	High precision, tolerant to noise, accents and language mixing; includes analysis and custom dictionaries
Integrations	⭐⭐⭐⭐ (4.0)	Advanced API, development kits and cloud/local/device deployment; fits critical environments
Languages and Support	⭐⭐⭐ (3.0)	Broad language support; assistance offered primarily in English, with solid technical documentation
Ease of Use	⭐⭐⭐⭐ (4.0)	Functional interface with technical focus; moderate learning curve if used by API
Value for Money	⭐⭐⭐⭐½ (4.5)	High value thanks to its precision and data control; has several plans and free trial

AgentAya Overall Score: ⭐⭐⭐⭐ 4.0 / 5

Balances precision, security and flexibility for enterprise use with viable adoption in SMEs.

Main Features

• Multilingual automatic transcription (over 55 languages and dialects) with high tolerance to noise and accents.
• Real-time and batch operation: low latency (on the order of less than one second) in live streaming and agile file processing.
• Diarization (speaker identification) and word-by-word timestamps.
• Automatic punctuation and normalization of numbers, dates and currencies.
• Custom dictionaries for proper names, acronyms and sector jargon.
• Automatic language identification and language mixing management in the same conversation.
• Optional profanity and filler detection; multichannel audio support and subtitle format options.
• Unified API and development kits; flexible deployment in the cloud, on own infrastructure or directly on devices.

These functions allow transforming calls, interviews or classes into useful data, cutting editing hours and standardizing documents.

AI Functions

Speechmatics’ artificial intelligence doesn’t just transcribe, it also:

• Interprets context.
• Recognizes voices and accents.
• Adds capabilities like topic detection and sentiment analysis to classify content.
• Can mix languages without manual switching.
• Can adjust punctuation, segmentation and format to improve readability.

Custom dictionaries give control to sectors with specific terminology (legal, health, finance), improving precision and consistency in final text. Additionally, it incorporates automatic translation and summary generation from transcriptions, extending value beyond literal text.

Integrations

The tool prioritizes API integration and offers development kits for the most common programming languages. It’s compatible with storage services and audiovisual platforms, and can connect to customer service systems, conversational analysis or other business tools through connectors or an integration layer.

Integrations with messaging applications can be achieved through the API or third-party automation tools. Deployment flexibility (cloud, on-premises or device) facilitates meeting infrastructure and privacy requirements of SMEs and regulated sectors.

Security and Data Compliance

By design, Speechmatics doesn’t store audio or transcriptions except by express client configuration. Data belongs to the client and is processed with encryption both in transit and at rest. Complies with the General Data Protection Regulation, and has ISO/IEC 27001:2022 accreditation, SOC 2 Type II certification and US health regulation compliance (HIPAA). Additionally, it can be deployed in environments requiring data sovereignty (private cloud, local installations or dedicated devices), reducing risks and facilitating adoption in organizations handling sensitive information.

Language – Customer Support and Interface

Official support is provided in English, usually by email and technical channels. Documentation is available in English, but is clear and extensive, with guides and quick start examples. In higher plans, there are priority support options and technical accompaniment, including a customer success manager figure. The tool’s interface is in English, and the commercial website is partially translated.

AI Language – The Tool Itself

The engine supports transcription in over 55 languages and dialects (including variants of multiple languages from different regions), recognizes regional accents and handles language mixing. Recognition quality in multiple languages is high, facilitating adoption in international teams.

Mobile Access

It doesn’t have a specific mobile application. The service is used through a web panel and API, so it’s possible to transcribe audio captured from your phone by sending them to the cloud service. For review and editing, the desktop environment is usually more comfortable.

Support, Onboarding Process, and Account Management

Onboarding is direct: online registration, panel access and first files or real-time broadcasts via API. Documentation includes step-by-step guides and code examples. In advanced plans, closer accompaniment is offered with technical staff for integrations, performance and security, as well as a customer success manager to ensure correct adoption. In general, it’s suitable for SMEs with some internal or external technical support during integration.

Ease of Use / UX

The interface is functional and performance-oriented. It doesn’t pretend to be a visual editor, but a control point to upload audios, supervise transcriptions and export results; power resides in the linguistic engine and API. Any professional can adapt to its use in little time: upload a file, choose language and receive readable text with timestamps and differentiated speakers.

Pricing and Plans

Offers pay-per-use, subscriptions and custom enterprise options. Has a free tier for testing (without card) and demonstrations to evaluate performance before contracting. Plans are distinguished by volume, concurrency, advanced features and deployment modality (cloud, on-premises or devices).

Case Study

Case: a customer service company needed to audit calls in multiple languages with multiple speakers and background noise. With Speechmatics it integrated real-time transcription and sentiment analysis into its internal platform. In a few weeks, it standardized conversation minutes, identified recurring topics and significantly reduced audit times, maintaining total data control by operating the solution on its own infrastructure.

Speechmatics vs Alternatives

Tool	Advantages vs Speechmatics	Disadvantages vs Speechmatics
Google Speech-to-Text	Direct integration with Google Cloud and compatibility with over 125 languages	Deployment mainly in cloud; less local control over data privacy
Rev AI	Offers hybrid transcription (automatic and human) and robust security certifications	Supports multiple languages, but has less capacity to handle multilingual conversations

Speechmatics offers a balance between multilingual precision, privacy by default and deployment flexibility (cloud, local device or own infrastructure). Google stands out for its integrated ecosystem and language coverage. Rev AI provides a hybrid option with regulatory focus. For SMEs valuing data control and robust transcription against accents, noise or language mixing, Speechmatics is the most complete option.

Frequently Asked Questions

What languages does the tool work with? 

Supports over 55 languages, including the most spoken (English, Spanish, Mandarin, Arabic, French, Hindi) and other less common ones like Welsh, Uyghur, Maltese or Bashkir.

Does it recognize dialects or accents (for example, British vs American English)? 

Yes. The system is trained for a wide variety of accents and dialects and handles language mixing, useful for global conversations.

What file types are compatible (MP3, WAV, etc.)? 

Compatible with the most frequent audio formats (MP3, WAV, MP4, OGG, FLAC, among others), providing flexibility for different input sources.

Can it transcribe live audio or only pre-recorded files? 

Can do both. Offers real-time capabilities with low latency and batch transcription for already recorded files.

Is my audio stored on your servers? 

By default, neither audio nor transcriptions are saved. Depending on configuration, the client can choose to keep them or run the service on their own infrastructure.

Does it include sentiment analysis or topic extraction? 

Yes. Besides transcription, the API offers sentiment analysis, topic detection and supports custom dictionaries for sector terminology.