> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.talkif.ai/concepts/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.talkif.ai/_mcp/server.

# Concepts

## Docs

- [Flows and versions](https://docs.talkif.ai/concepts/flows-and-versions.md): What a flow is made of, the four lifecycle states, what publishing actually creates, and how phone numbers and API calls decide which version to run.
- [Credits and pricing](https://docs.talkif.ai/concepts/credits-and-pricing.md): How Talkif charges — what a call costs and why, the four kinds of balance and the order they're spent in, what happens at zero, and a worked example.