Launched this week
Phasio

Phasio

Test your LLM prompts before they break production

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Phasio brings Jest-style testing to LLM prompts. Write test cases with contains, notContains, and llmJudge validators. Run evals across OpenAI and Anthropic in one command. Catch regressions in CI before your users do.

Phasio makers

Here are the founders, developers, designers and product people who worked on Phasio