SPeech & Audio

Conversational AI Training Data

Conversational AI training data for real-time, low-latency dialogue systems , multi-turn flows, intent labeling, and response annotation for voice and chat AI.

Conversational AI systems fail in predictable ways: they lose context across turns, mishandle ambiguous intent, respond inappropriately to emotional signals, and break down under real-world disfluency. Appen's conversational AI training data service addresses each of these failure modes with training data designed for the specific challenges of multi-turn, real-time, and task-oriented dialogue.

From scripted dialogue collection and live conversation recording to multi-turn annotation and intent labeling, our data capabilities cover the full conversational AI development stack.

What Appen Delivers

Multi-Turn Dialogue Collection

Scripted and spontaneous multi-turn conversation recordings across customer service, virtual assistant, and task completion scenarios. Recordings are collected from demographically diverse speakers in controlled and naturalistic environments, ensuring your model trains on dialogue that reflects real user behaviour.

Intent and Entity Annotation

Systematic labeling of user intent, named entities, dialogue acts, and slot values across conversation turns. Intent annotation at the utterance and session level provides the structured signal that task-oriented dialogue systems require to route, respond, and escalate appropriately.

Dialogue Quality Evaluation

Human evaluation of chatbot and voice assistant responses for coherence, relevance, appropriateness, and helpfulness across the full conversation context. Response quality evaluation identifies where your model loses the thread, introduces confusion, or fails to complete the user's underlying goal.

Real-Time Voice AI Data

Low-latency dialogue training data including multi-speaker transcription with overlap annotation, backchanneling labels, and turn-taking signal, supporting voice AI systems that must manage interruptions and simultaneous speech naturally.

Why Conversational Data Quality Matters

Conversational AI models degrade in characteristic ways when trained on low-quality data: they are fluent but off-topic, polite but unhelpful, or accurate on isolated turns but incoherent across a full session. Data annotation quality for conversational systems requires annotators who evaluate the full dialogue context, not just individual utterances.

Appen has delivered conversational training data for virtual assistant developers including Dialpad's ML models for human conversation and Infobip's conversational AI chatbots. Our programmes are designed for the full dialogue lifecycle from collection through annotation through evaluation.

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Talk to our team about speech and audio data solutions, from expressive TTS synthesis to dialectal speech collection across low-resource languages.

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