Add Use The llm CLI With Claude Models as an LLM TIL

llm/use-the-llm-cli-with-claude-models.md

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+# Use The llm CLI With Claude Models
+
+[Simon Willison's `llm`](https://llm.datasette.io/en/stable/index.html) can be
+used with a bunch of different models (local and API). The whole thing is
+plugin driven. To use a specific model, you'll need to install the plugin for
+it. For instance, to use the [Claude 3 family of
+models](https://www.anthropic.com/news/claude-3-family) you need to install
+`llm-claude-3`.
+
+```bash
+$ llm install llm-claude-3
+```
+
+Then when prompting `llm`, specify which of the Claude models you want to use —
+`claude-3-haiku`, `claude-3-sonnet`, or `claude-3-opus` — with the `-m` flag:
+
+```bash
+$ llm \
+  -m claude-3-haiku \
+   --key $CLAUDE_API_KEY \
+  'Show me the SQL query to create a cocktails table.'
+```
+
+Note: instead of adding my Claude API key to the key store, I've opted to
+include it with the `--key` flag via an environment variable that I've set
+ahead of time.