NLX (Natural Language Experience) Design Stack
Overview
A framework defining the new principles and UI constructs required for Natural Language Interfaces. Moves beyond simple chat to structured, designed conversations.
Core principle: NLX is the new UX. Conversations have grammars, structures, and invisible UI elements.
The Four Elements
┌─────────────────────────────────────────────────────────────────┐
│ NLX DESIGN STACK │
├─────────────────────────────────────────────────────────────────┤
│ │
│ ┌──────────────┐ ┌──────────────┐ │
│ │ PROMPTS │ │ PLANS │ │
│ │ │ │ │ │
│ │ New UI │ │ Structured │ │
│ │ Construct │ │ Editable │ │
│ │ (Input) │ │ Outputs │ │
│ └──────────────┘ └──────────────┘ │
│ │
│ ┌──────────────┐ ┌──────────────┐ │
│ │ PROCESS │ │ FOLLOW-UPS │ │
│ │ │ │ │ │
│ │ Show the │ │ Guided │ │
│ │ Work / │ │ Navigation │ │
│ │ Thinking │ │ Suggestions │ │
│ └──────────────┘ └──────────────┘ │
│ │
└─────────────────────────────────────────────────────────────────┘
Key Principles
| Element | Principle |
|---|---|
| Prompts | Treat prompts as distinct UI elements (like dropdowns) |
| Plans | Return structured, editable plans for complex goals |
| Process | Visualize reasoning to build trust ("thinking aloud") |
| Follow-ups | Proactively suggest next steps ("happy path" guidance) |
Common Mistakes
- Assuming "the model is the product" (neglecting design)
- Making the AI a black box without feedback
- Failing to guide users after an output
Source: Aparna Chennapragada (Microsoft CPO) via Lenny's Podcast