Linden by Speechmatics
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Low-latency speech-to-text for AI agents. Detects turns, identifies speakers, and captures names and numbers with high precision in over 55 languages.
What is Linden by Speechmatics?
Linden by Speechmatics is a speech-to-text (STT) transcription model specifically designed for the creation and deployment of AI voice agents. Unlike general-purpose transcription systems, this tool is optimized to deliver superior accuracy and the critical processing speed required for two-way conversational environments. Its primary function is to transform audio into text with extremely low latency, allowing the agent's large language model (LLM) to receive information almost instantly to generate a natural response.
Linden operates on a low-latency architecture that delivers final transcriptions in just 350 milliseconds. This technical speed is essential for voice agents to operate smoothly on computers or mobile devices, eliminating the artificial pauses that often degrade the user experience. The tool uses advanced artificial intelligence approaches for turn-taking detection, accurately identifying when a user has finished speaking or if a voluntary interruption has occurred.
Key technical capabilities and practical benefits include:
- Speaker Diarization: The model can attribute each word to the specific person who spoke it. This allows the voice agent to act based on the correct voice in calls involving multiple participants, avoiding confusion caused by volume or overlapping speech.
- Extensive Multilingual Support: It offers coverage in more than 55 languages and dialects, capturing complex details like proper names, numbers, and technical terminology with high fidelity—details that other models often miss.
- Custom Dictionary: Developers can integrate up to 1,000 specific words, such as corporate acronyms or product names, to ensure real-time speech recognition is accurate within the specific business context.
- Versatile Integration: It integrates natively into modern tech stacks via a direct API or through specialized frameworks like LiveKit and Pipecat, facilitating its implementation into existing AI pipelines.
This tool is ideal for developers and companies that need to build robust voice infrastructures without developing the natural language processing layer from scratch. Linden by Speechmatics positions itself as an infrastructure solution that ensures voice agents don't just listen, but actually understand the context and rhythm of human conversation, improving efficiency in sectors like customer service, telemedicine, and advanced virtual assistants. By focusing on signal and speed, it allows development teams to focus on workflow logic and the end-user experience.
Linden by Speechmatics features and use cases
How to use Linden by Speechmatics
Linden by Speechmatics FAQ
What is Linden by Speechmatics and what is it used for?
Linden is a speech-to-text transcription model specifically designed for AI agents that require immediate responses and high accuracy.
What is the processing latency provided by Linden?
This model completes transcriptions in just 350 milliseconds, allowing the voice agent to respond fluidly without pauses that disrupt the flow of conversation.
How many languages can Linden by Speechmatics transcribe?
The system is capable of accurately recognizing and transcribing over 55 different languages and dialects, including proper names and complex numerical data.
Can Linden distinguish between different speakers on the same call?
Yes, it includes speaker diarization features that attribute each word to the correct person, even in environments with multiple participants.
What is the cost of the Agent STT service using the Linden model?
The starting price is $0.30 per hour of use, though volume discounts are available that can lower the rate to $0.15.
How can Linden by Speechmatics be integrated into a software project?
Integration can be performed directly via an API or by using compatible frameworks such as LiveKit and Pipecat to streamline development.
Is it possible to add custom words to the Linden dictionary?
Developers can include up to 1,000 specific terms, such as product names or technical jargon, to improve the accuracy of business-related transcriptions.
Does Speechmatics offer any free credits to try out Linden?
The platform provides $100 in initial credit so users can explore all the tool’s features without having to enter a credit card.
Where is the data processed by Linden by Speechmatics stored?
Data is sent to endpoints in the European Union, the United States, or Australia, and a global access point is also available to reduce latency based on location.
Linden by Speechmatics pricing and plans
Free Plan
Price: $100 in free credit to get started.
- No credit card required.
- Speech-to-Text in over 55 languages.
- Limit of 2 simultaneous real-time sessions.
- Multi-region cloud options.
- Low-latency Text-to-Speech (currently English only).
Pro Plan
Price: Starting at $0.129/hour (or $0.0022/minute).
- $100 initial credit (credit card required after sign-up).
- Limit of 50 simultaneous real-time sessions.
- Capacity of 10 file tasks per second.
- Online technical support via email.
- Includes all Speech-to-Text and Text-to-Speech features from the Free plan.
Linden Model (Agent STT)
Price: $0.30/hour (with volume discounts reducing the price to as low as $0.15/hour).
- Specialized model for AI voice agents.
- 350ms final transcription latency.
- Speaker diarization (identifies who is speaking) and turn-taking cues included by default.
- Transcription in over 55 languages.
- Support for custom dictionaries of up to 1,000 words.
Enterprise Plan
Price: Contact the official website for custom quotes and volume discounts.
- Unlimited scalability with no rate limits.
- SaaS or on-premises deployment options for maximum privacy.
- Custom models, voices, and languages.
- Maximum session concurrency.
- Priority support and dedicated Customer Success Manager.
- Early access to new features.
Linden by Speechmatics Screenshots
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