Conversational Twin

Overview

Conversational Twin is a serverless chat product: CloudFront hosts the site and embeddable widget; API Gateway and Lambda own /chat. One Conversational Twin agent on Lambda builds a persona prompt, talks to Bedrock Nova, and keeps session memory in S3.

System design

• Embed host, agent API. OPG Labs embeds the widget; the browser never calls Bedrock.
• Persona before reply. Resume, LinkedIn, and style notes shape every turn.
• Session memory in S3. Dialogue continues across visits via per-session JSON.
• Same path for voice and type. Whisper and TTS wrap the same /chat agent path.

Product path

What a visitor can do. Diagram key: ✦ AI agent · purple = actor · white = service.

---
config:
  theme: default
  themeVariables:
    background: "#ffffff"
    fontSize: "14px"
---
flowchart TB
    person[Website visitor]
    host[OPG Labs host page]
    widget[Twin widget]
    twin["✦ Conversational Twin"]
    reply[Reply plus face]

    person -->|open project page| host
    host -->|embeds widget| widget
    person -->|type a message| widget
    person -->|speak into mic| widget
    widget --> twin --> reply --> widget

    classDef agent fill:#e8f0ee,stroke:#0f3d36,stroke-width:2px,color:#0d0d0d
    classDef service fill:#fafaf8,stroke:#c8c8c2,stroke-width:1px,color:#0d0d0d
    classDef actor fill:#f3eef8,stroke:#6b4f9a,stroke-width:2px,color:#0d0d0d
    class twin agent
    class host,widget,reply service
    class person actor

Memory, persona, and voice detail live on Mental Model and the Conversational Twin tab.