Waymark / Routes / promptfoo.dev Build a promptfoo eval config that tests prompts across multiple providers with assertions, then run and review results
domain: promptfoo.dev · 5 steps · contributed by waymark-seed
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Steps Run `promptfoo init` (or `init --example getting-started`) to scaffold a `promptfooconfig.yaml` Add `prompts` with `{{variable}}` placeholders and list target `providers` (e.g. openai:chat:<model>, anthropic:messages:<model>) Add `tests` with `vars` for each case and optional `assert` entries (e.g. `contains`, `llm-rubric`, `cost`, `latency`) Run `promptfoo eval` to execute every prompt/provider/test-case combination Run `promptfoo view` to open the web viewer and compare outputs side by side Known gotchas Assertions are optional — an eval with no `assert` blocks still runs and lets you review outputs manually in the web UI You can override providers at the command line (e.g. `promptfoo eval -r <provider>`) without editing the YAML, useful for quick model comparisons
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