SpeechData.aiSpirelight ApS
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Related Products
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About
AfterQuery is an applied research platform designed to create high-quality training data for frontier artificial intelligence models by capturing how real experts think, reason, and solve problems in professional contexts. It focuses on transforming real-world work into structured datasets that go beyond simple outputs, encoding decision-making processes, tradeoffs, and contextual reasoning that traditional internet-sourced data cannot provide. It works directly with domain experts to generate supervised fine-tuning data, including prompt–response pairs and detailed reasoning traces, as well as reinforcement learning datasets with expert-designed prompts and grading frameworks that convert subjective judgment into scalable reward signals. It also builds custom agent environments across APIs and tools, enabling models to be trained and evaluated in realistic workflows, and captures computer-use trajectories that demonstrate how humans interact with software step by step.
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About
SpeechData.ai is a commercial catalogue and collection service for conversational speech data used to build and evaluate ASR, TTS and other voice-AI systems. Its website lists 60 conversational datasets across 60 languages and dialects, totaling 73,000 audio hours from 7,250 speakers. Listings describe spontaneous two-person recordings, dual-channel audio, time-aligned human-verified transcripts, speaker metadata and consent documentation, with catalogue prices of USD 60–95 per audio hour. Buyers can request samples and commission additional collection to a brief. The provider also offers transcription and audio annotation. Typical buyers include teams sourcing speech for model training and evaluation. Dataset availability, licensing and final price depend on language, collection scope and the terms agreed for the project.
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Platforms Supported
Windows
Not Supported
Mac
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Linux
Not Supported
Cloud
Supported
On-Premises
Not Supported
iPhone
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iPad
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Android
Not Supported
Chromebook
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Platforms Supported
Windows
Not Supported
Mac
Not 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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Audience
AI researchers, developers, and enterprises building advanced models who need high-quality, expert-driven training data to improve reasoning and real-world task performance
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Audience
Teams procuring conversational speech data or speech collection, transcription and annotation services for ASR, TTS and voice AI training and evaluation.
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Support
Phone Support
Not Supported
24/7 Live Support
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Online
Supported
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Support
Phone Support
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24/7 Live Support
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Online
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API
Offers API
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API
Offers API
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Screenshots and Videos |
Screenshots and VideosNo images available
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Pricing
No information available.
Free Version
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Free Trial
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Pricing
USD 60 per audio hour
Free Version
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Free Trial
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Reviews/
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Reviews/
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Training
Documentation
Supported
Webinars
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Live Online
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In Person
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Training
Documentation
Not Supported
Webinars
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Live Online
Not Supported
In Person
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Company InformationAfterQuery
Founded: 2025
United States
www.afterquery.com
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Company InformationSpirelight ApS
Founded: 2019
Denmark
www.speechdata.ai/
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Integrations
Model Context Protocol (MCP)
Not Supported
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