Best Feature Flags · head-to-head
ConfigCat vs Flagsmith
A sourced, side-by-side comparison for feature flags. ConfigCat has the lower entry price. Every figure links to the vendor's own page and the date we captured it.
ConfigCat has the lower entry price — ConfigCat starts at $0/mo, Flagsmith at $0/mo. Free tier: ConfigCat Yes, Flagsmith Yes. HIPAA: ConfigCat —, Flagsmith —.
As of 2026-06-14 · figures link to their source below
Side by side
ConfigCat
$0/mo entryFlagsmith
$0/mo entrySources — ConfigCat: configcat.com (verified 2026-06-14) · Flagsmith: flagsmith.com (verified 2026-06-14)
Key features
ConfigCat: Client-side flag evaluation — user data never leaves customer systems; ISO 27001:2022 certified; EU-only data storage option available on all plans; Unlimited seats on every plan including free tier; Audit log retention from 7 days (Pro) up to 2 years (Enterprise)
Flagsmith: Open-source self-hosted option (full feature parity); OpenFeature provider support for vendor-agnostic evaluation; Multi-variate flags with A/B and MVT testing built in; Scheduled flag changes on paid plans