DessaBlock
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Eleven RealtimeElevenLabs
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Related Products
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About
Dessa is Block's speech-to-speech artificial intelligence model for conversational voice research and applications. It takes audio input and produces audio output directly, without converting speech into text as an intermediate step. Trained from scratch on human conversation rather than text, the model supports full-duplex interaction, listening and speaking at the same time, and runs locally on a MacBook Pro with an M4 Max chip or better. It captures conversational cues such as emotion, sarcasm, laughter, pauses, and turn-taking that can be lost in text-based pipelines. Dessa is intended for AI safety researchers and developers studying voice-model behavior, privacy, and real-time interaction. It is a speech model for research and development, not a general-purpose business application or hosted voice-agent platform.
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About
Eleven Realtime is a developer-facing speech-to-speech API for adding live voice conversations to applications and AI agents. It combines speech recognition, turn-taking, language-model reasoning, and voice generation, with Mini and Max model options for different conversational needs. Developers can use the models through the Realtime API or select them in ElevenAgents. The streaming interface is designed for interactive voice experiences, including assistants, customer support, tutors, and interactive characters. Agent configurations can include prompts, voices, tools, knowledge bases, and conversation flows. Realtime usage is billed per minute plus model input and output tokens. The product is intended for developers and organizations building real-time conversational applications and voice-enabled customer experiences.
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Platforms Supported
Windows
Not Supported
Mac
Supported
Linux
Not Supported
Cloud
Not Supported
On-Premises
Not Supported
iPhone
Not Supported
iPad
Not Supported
Android
Not Supported
Chromebook
Not Supported
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Platforms Supported
Windows
Not Supported
Mac
Not Supported
Linux
Not Supported
Cloud
Supported
On-Premises
Not Supported
iPhone
Not Supported
iPad
Not Supported
Android
Not Supported
Chromebook
Not Supported
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Audience
AI safety researchers and developers evaluating or building speech-based conversational AI.
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Audience
Developers and organizations building low-latency voice-enabled applications and AI agents, including conversational customer experiences.
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Support
Phone Support
Not Supported
24/7 Live Support
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Online
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Support
Phone Support
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24/7 Live Support
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Online
Supported
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API
Offers API
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API
Offers API
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Screenshots and Videos |
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Pricing
No information available.
Free Version
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Free Trial
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PricingRealtime agents are billed at the standard ElevenAgents per-minute rate plus input, cached-input, and output-token charges for the selected model. Eleven Realtime v1 Max costs more per token than Mini; rates vary by plan and model.
Free Version
Not Supported
Free Trial
Not Supported
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Reviews/
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Reviews/
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Training
Documentation
Not Supported
Webinars
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Live Online
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In Person
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Training
Documentation
Supported
Webinars
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Live Online
Not Supported
In Person
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Company InformationBlock
Founded: 2009
United States
block.xyz/dessa
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Company InformationElevenLabs
Founded: 2022
United States
elevenlabs.io/realtime
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Integrations
ElevenLabs
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OpenAI
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