AI ranking change · 2026-07-13
Promptfoo overtakes Braintrust as ChatGPT's #1 pick
for prompt testing tool
Braintrust→Promptfoo
On 2026-07-13, ChatGPT changed its #1 recommendation for best prompt testing tool — dropping Braintrust from the top spot in favor of Promptfoo. The previous #1 had held since 2026-07-12.
“Best overall value for most practitioners: open-source, local-first prompt/model matrix testing, extensive assertions, CI quality gates, cost/latency checks, and unusually strong red-teaming. Near-tie with Braintrust; it wins on portability and low adoption friction.”— ChatGPT
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