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ABTestly

Code-first A/B testing with statistics you can audit

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A/B testing for teams that write their variations in code, not in a visual editor. Real JavaScript and CSS, in your repository, with results from an exact event ledger. We write about experimentation and statistics that refuse to overclaim.

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Almost every A/B testing vendor refuses to publish a price. Here are ours

Almost every A/B testing vendor refuses to publish a price. Here are ours

Comments
3 min read
A rollback plan needs a detection plan

A rollback plan needs a detection plan

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4 min read
Your A/B testing tool and your analytics will never agree, and that is fine

Your A/B testing tool and your analytics will never agree, and that is fine

Comments 1
3 min read
How long should an A/B test run? Not a number of weeks

How long should an A/B test run? Not a number of weeks

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4 min read
2.2 ms, 19.9 ms, 529 ms: benchmarking an A/B testing runtime and publishing the caveats

2.2 ms, 19.9 ms, 529 ms: benchmarking an A/B testing runtime and publishing the caveats

Comments
4 min read
Why our A/B testing tool refuses to call a winner

Why our A/B testing tool refuses to call a winner

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4 min read
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