Meet Sparrow, AI that knows the art of conversation

Sparrow-0 is a turn-taking model that actually understands the flow and timing of a conversation.

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Sparrow-0



If AI is going to hold real conversations, it needs to think like humans do.

Existing models fail because they process conversation like a tit-for-tat turn-based exchange, counting the silence and missing the natural rhythm of speech. But real conversations aren’t that simple. People interrupt, pause mid-thought, shift their pace, and adapt dynamically to the flow of dialogue.

Introducing Sparrow-0: the first AI that truly understands natural conversation flow.

Instead of following static rules, Sparrow listens for tone, rhythm, and both semantic and conversational context to know exactly when to speak. Whether in a rapid-fire debate or a slow, thoughtful exchange, it adapts in real time, making AI feel effortless and natural.

Sparrow-0 is a lightning-fast transformer model built to elevate AI from robotic to truly conversational. The result? Longer, more engaging interactions that feel just like talking to a real person.

"Before Sparrow-0, AI would interrupt or lag, making conversations feel really awkward. Now, they adapt to each user’s rhythm, making mock interviews flow effortlessly. Our users engage longer, have more in depth conversations, and get a practice experience that truly prepares them for the real thing."

Michael Guan
CEO at Finalround.ai

Conversational Awareness

Understands semantic meaning, tone, and pacing to determine exactly when to respond—just like a human.

Turn Sensitivity & Control

Understands the natural rhythm of human speech by capturing subtle cues and respecting pauses, ensuring each interaction feels remarkably human.

Heuristics & ML

Dynamically adapts to speaking styles and conversation patterns using conversational heuristics and machine learning.

Optimized Latency

Delivers ultra-fast response times under 600ms for seamless, real-time conversation.

Customize AI Conversation Flow with Precision

Sparrow-0 is fully configurable to match different conversation styles, pacing, and interaction needs. Developer controls allow fine-tuning of turn-taking behaviors, pause sensitivity, and activation triggers.

See Developer Docs

Learning when to speak

Sparrow-0's transformer-based approach refines its response timing over each conversation, learning from each interaction to match natural conversation flow. Humans talk differently, Sparrow-0 dynamically responds.

Time vs Confidence

Sparrow-0 Benchmarking

Sparrow-0 outperforms the leading models, setting a new benchmark for natural, real-time turn-taking.

Model

Sparrow-0

Leading SOTA Turn-Taking Model

Prediction Consistency (MSE)

0.4202

3.8360

ModTurn Precision (RMSE)

0.6482

1.9586

Turn Accuracy (MAE)

0.3989

1.7467

Model Reliability (R²)

70.50%

-169.27%

Sparrow works in concert
with our other models

Sparrow-0 works alongside our models to enable natural, real-time conversation flow with precise turn-taking.

Rendering model

Phoenix-3

A foundational full-face rendering model for lifelike Replicas.

Learn more

Perception model

Raven-0

A perception model that doesn't just see, it understands.

Learn more

What if AI conversations never missed a beat?