> ## Documentation Index
> Fetch the complete documentation index at: https://docs.semilattice.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Introduction

> Simulate how real users react to product changes, concepts, and decisions.

Semilattice is a platform for simulated user and market research. Built around AI models of specific groups of users with transparent accuracy metrics, it lets you run simulated discovery, concept exploration, spec validation, feature prioritisation, message testing, conversion flow optimisation, UX comprehension, and usability testing in minutes.

## How it works

1. **Choose a user model**: Select from 50+ ready-made user models, or [work with us](https://app.semilattice.ai/user-models/request) to create a custom model from your own data.
2. **Describe your decision**: Tell Semilattice about your product change or marketing plan and the planner will build a structured simulation to validate it with simulated users in minutes.
3. **Act on the results**: Rich simulation results provide net new information for decision-making. Fold the findings into the next version and run a new simulation to validate again.

## Get started

<CardGroup cols={2}>
  <Card title="Get started for free" href="https://app.semilattice.ai">
    No credit card. Run your first simulation in minutes.
  </Card>

  <Card title="Book a call" href="https://calendar.app.google/bwo1Y672YsL1CPiQA">
    We'll walk you through it and get you set up.
  </Card>
</CardGroup>

## Example use cases

**Concept testing before you build**: You're considering three pricing tiers. Before committing, you ask your user model how they'd react to each. You get a directional signal in minutes instead of commissioning a survey.

**Comparing segments**: You want to know whether first-time buyers and returning customers respond differently to a new onboarding flow. You ask the same question to both user models and compare.

**User journey simulation on live products**: Simulated users navigate your live website as specific user segments. You see where they get confused, where they drop off, and what they miss.

**Quick signal for a meeting**: You have a product review tomorrow and a hypothesis about messaging. You test it against your user model over lunch and bring evidence to the conversation.

**Grounding AI workflows**: Connect Semilattice to Claude, Cursor, or any MCP-compatible tool. Your AI can ask your user model a question mid-conversation.