# Pricing & Credit Model — Make Charts With AI

## Free Tier (Default)
- **Initial Free Credits**: 6 free credits assigned automatically per device fingerprint upon first interaction.
- **Action Cost**: 1 credit consumed per chart generation or chart recommendation request (via Web UI or MCP Server).

## Ad-Supported Refills
- **Credit Reward**: Watching a short sponsored ad grants +2 credits to your device balance immediately.
- **Maximum Cap**: Up to a maximum of 30 credits balance can be held at any time.

## Limits & Rules
- **Global Daily Cap**: System-wide safeguard limiting total free chart generations to 20 per day across all anonymous users combined.
- **API Keys**: Shared credit balance between your web browser session and custom API keys used for MCP server integrations.