An Anthropic API key lets SCM write articles with Claude for about 4 cents each. Pay as you go with no monthly plan, and the model list refreshes straight from your account.
Why use this?
- Pay as you go. A 1,500 word article costs roughly 4 cents on Sonnet, closer to 1 cent on Haiku
- No subscription, however you need to buy and top up before API key is given,
- You can run requests in parallel. API keys have generous rate limits.
- Model list can be retrieved manually, it means the list stays fresh even if you don’t update SCM.
Requires a paid Anthropic account, which is not the same as a Claude Code account.
There is no free tier, you need to enter billing details before a key is issued.
If you have Claude Code already, use this instead:
Notes
Rough cost per 1,500 word article, list prices at time of writing: Haiku about 1 cent, Sonnet about 4 cents, Opus about 20 cents. Start on Sonnet. Drop to Haiku for bulk titles, meta descriptions and short rewrites. Current rates: Plans & Pricing | Claude by Anthropic
SCM asks Claude for up to 16,000 output tokens per call, roughly 12,000 words. Long form articles will not truncate mid sentence.
Where to get an Anthropic API key
- Sign up with any email, no business account or approval needed
- Add credit under Billing. Minimum top up is 5 dollars
- Create the key under API Keys. Copy it immediately, it is shown once
- Keys start with
sk-ant-
How to add Anthropic API key to SEO Content Machine
Settings > API Logins > AI > Claude (Anthropic)
You need to paste in your API key
Once pasted in its ready to use.
Models can be selected per task.
Start a free trial and connect your Anthropic key in under a minute: https://seocontentmachine.com
How to use Claude in SEO Workspace
Claude can be used as an Agent.
All models are there as well as effort.
How to use Claude to generate articles in bulk
Inside page pipeline, Claude can be set as an AI service.
Select model and effort
Click refresh model list to update to the newest models on offer




