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Stealth · research preview · 2026

Interactive AI, made human.

We're building AI that listens, watches, and acts. One desktop product shipping now — six research directions for what comes after the chat box.

Supported by
start voice
01 · Research

Six directions we're studying.

  1. 01voice

    Voice that sounds like you.

    Translation that preserves accent, rhythm, and identity across languages — in real time.

    • Prosody-aware neural vocoders
    • Identity embeddings across 40+ languages
    • Sub-200ms streaming latency
    <200msend-to-end latency
  2. 02turn-taking

    AI that knows when to speak.

    No wake words. Reads acoustic and behavioral cues to know when you're inviting a response.

    • Prosodic boundary detection
    • Speaker diarization + overlap prediction
    • Conversational state tracking
    94%turn prediction accuracy
  3. 03fact-check

    Real-time fact correction.

    Catches errors mid-sentence and corrects them without breaking conversation flow.

    • Streaming claim extraction
    • Retrieval-augmented verification
    • Gentle interjection timing
    ~800msfact verification latency
  4. 04multimodal

    AI that reads the room.

    Facial expressions, micro-gestures, vocal tone — emotional feedback that shapes responses.

    • Micro-expression detection (AU-level)
    • Paralinguistic feature extraction
    • Affective loop closure
    12emotion dimensions tracked
  5. 05context

    Parallel context execution.

    Multiple time-anchored instructions running independently without bleeding into each other.

    • Temporal scope isolation
    • Dependency graph scheduling
    • Priority-based interruption
    parallel contexts supported
  6. 06agency

    AI that acts, not just answers.

    Long-horizon task execution on live systems through natural spoken commands.

    • Computer-use model fine-tuning
    • Multi-step plan generation
    • Failure recovery + clarification
    20+apps integrated
02 · Product

Sylica Stealth — already shipping.

A quiet desktop assistant that reads your screen and helps through meetings, browsing, and everyday work.

Surface
Desktop overlay
Windows
Awareness
Screen + mic
Real-time capture
Keys
BYOK
OpenAI · Anthropic · xAI · Google
Privacy
Local-first
Zero cloud frames

Stealth is v0 of interactive AI — narrow, opinionated, useful now. The research above is how it gets wider.

03 · Principles

How we ship.

01

Local by default

On-device capture. You choose what leaves your machine.

02

Bring your own keys

Your OpenAI / Anthropic / xAI / Google keys. No markup.

03

Research in the open

Write-ups, demos, honest negative results — on /blogs.

For developers

Unified LLM gateway

One OpenAI-compatible API for OpenAI, Anthropic, xAI, Google, and open-source models. Powers Stealth under the hood.

Build the post-chatbox layer.

Small team. Hard problems. Real product in users' hands. Hiring now.