Bucketeer
Open-source feature flag management and A/B testing platform created by CyberAgent, supporting 100M+ users with billions of flag evaluations per month.
Our Verdict
Credible OSS flags platform for large engineering orgs willing to run it; most teams should start with Unleash.
Pros
- Open-source flags with real scale (CyberAgent)
- Billions of evaluations/month in production
- A/B testing built in, not bolted on
- Self-hostable with Kubernetes
Cons
- Operational complexity of self-hosting
- Smaller community than LaunchDarkly or Unleash
- Docs thinner in English than Japanese
- UI less polished than SaaS competitors
When to Use Bucketeer
Good fit if you need
- Progressive feature rollout to 100M+ users
- A/B experimentation platform with statistical significance
- Targeting flags to user cohorts and account segments
- Kill switch for instant flag disable during incidents
- Audit trail of flag changes with automated compliance logs
Pricing
Price wrong?Bucketeer Pricing
- Pricing Model
- free
- Free Tier
- Yes
- Entry Price
- —
- Enterprise Available
- No
- Transparency Score
- —
Beta — estimates may differ from actual pricing
Estimated Monthly Cost
$25
Estimated Annual Cost
$300
Estimates are approximate and may not reflect current pricing. Always check the official pricing page.
Project Health
Health Score
10
1 day
81d
64
0d
Apache-2.0
Last checked: 2026-04-21
Lock-in Assessment
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