Looks like the playground is mainly for comparison between models, not prompts, and doesn't support templating? Vercel's is similar but not free and open-sourc

Looks like the playground is mainly for comparison between models, not prompts, and doesn't support templating? Vercel's is similar but not free and open-source. I'm running these tests in bulk, so I prefer to automate with the CLI, or integrate with a test framework like Jest. I think the web UI is good for tinkering, but does not fit as well into real workflows.