Anthropic Claude writes warm, natural guides and emails. Many people use it as the fallback behind Google Gemini, or as the main writer.
Getting your key:
- Open console.anthropic.com and sign in.
- Under Billing, add a little credit.
- Go to API Keys, click Create Key and copy it. It starts with sk-ant.
Adding it to Bonus Builder:

- Open Bonus Builder, then the AI tab.
- In the Anthropic Claude card, paste the key into API Key (starts with sk-ant-).
- Click Save AI settings.
- Click Test Anthropic Claude connection.
Choosing a model:
- Claude Sonnet 5.5 (recommended).
- Claude Haiku 4.5 (fastest, cheapest).
- Claude Opus 5.5 (premium quality).
- Claude Fable 5.1 (the most capable).
The price per 1 million tokens shows beside each model, and every Claude model on your account appears in the list once the key is saved.
Using Claude as the fallback:
Under AI configuration, set Fallback provider (optional) to Anthropic Claude. If the primary provider has a hiccup, Bonus Builder sends that request to Claude by itself.
A real example:
Sam writes with Google Gemini and has Anthropic Claude as the fallback. The ClipForge AI promo pack was written by Claude, and the costs report shows that call under the Claude model.