Feature Flags

Ship with confidence

Feature flags and gradual rollouts without the complexity. Toggle features instantly. No deploys required.

Control features in real-time

Toggle without touching code

new_checkout

Redesigned checkout

dark_mode

Dark theme option

ai_recommendations

Gradual rollout

25%

Active

Users see the redesigned flow

$299

Check flags with a single method call. Target users by ID, email, plan, or any custom attribute.

if BrainzLab::Cortex.enabled?(
  :new_checkout,
  user: current_user
)
  render :new_checkout
else
  render :checkout
end

Everything for safe releases

Instantly disable features when things go wrong

Target specific users, plans, or cohorts

Roll out to any percentage of users

Run experiments and measure impact

0ms

Evaluation time

Downtime risk

Flags evaluated

Free tier includes unlimited flags. No credit card required.