Pick DeepEval if
python teams who will run DeepEval locally at $0 and only open Confident AI Free / Starter $200 when they want a shared cloud.
Read the DeepEval pageDeepEval vs Inspect AI
Our take
Pick DeepEval if you're on a python team who will run DeepEval locally at $0 and only open Confident AI Free / Starter $200 when they want a shared cloud. Pick Inspect AI if you're on a eval / safety team who will run Inspect locally at $0 (you bring model API keys) — not Promptfoo first unless they want a YAML CI red-team harness.
Best for
DeepEval Unit-test the agent at $0
Inspect AI A research eval you can inspect at $0
Free plan
DeepEval $0 · local pytest + inspect TUI. You pay judge-model tokens
Inspect AI $0 · local CLI + log viewer. You pay model inference and machines
Lowest paid
DeepEval Team $2/mo
Inspect AI Not published by the vendor
Next step up
DeepEval Confident AI Starter from $200/mo
Inspect AI
Runs where
DeepEval Hosted
Inspect AI Hosted
Watch out
DeepEval $0 is the library, not judge tokens
Inspect AI $0 is the toolkit, not the model bill
Last checked
DeepEval 2026-10-27 · confident-ai.com/pricing
Inspect AI 2026-10-27 · inspect.aisi.org.uk
Which one, then?
Pick Inspect AI if
eval / safety teams who will run Inspect locally at $0 (you bring model API keys) — not Promptfoo first unless they want a YAML CI red-team harness.
Read the Inspect AI page