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OpenAI

Run any OpenAI chat or reasoning model in your suites with your own key.

Add an API key per project. Fenwick calls the models you choose with your settings and tracks tokens and cost per case.

Compare two models on the same dataset before you switch.

Category

Model providers

Setup time

2 minutes

Plans

Every plan, Hobby included

Run your next prompt change against 200 real cases this afternoon.

Free for 500 runs a month. Team from $39 a seat.

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