Choose ConfigCat if you need
- JetBrains. We haven't found it on Flagsmith's website.
- ISO 27001 or GDPR. We haven't found them on Flagsmith's website.
At a glance
- Both have a free plan.
- Flagsmith offers a free trial (14 days). We haven't confirmed one for ConfigCat.
- ConfigCat's lowest paid plan is Pro at $110 per month, as of October 23, 2026.
- Flagsmith's lowest paid plan is Start-Up at $45 per month, as of October 23, 2026.
- Both are available on API and Slack.
- Only ConfigCat lists JetBrains.
- Both work with GitHub, GitLab, Jira, Slack, Datadog, Amplitude, Mixpanel and Terraform.
- Both list SSO.
- Only ConfigCat lists ISO 27001 and GDPR.
- Both have a public API.
- Flagsmith can be self-hosted. We haven't confirmed that for ConfigCat.
From each tool's own website, checked on the dates below, and from published reviews.
Which to choose
From the facts checked for both tools, not from opinion. A fact we haven't confirmed for one of them is never counted.
Choose Flagsmith if you need
- A lower starting price. Flagsmith Start-Up is $45 and ConfigCat Pro is $110, both per month.
ConfigCat
Nobody has reviewed ConfigCat yet. Its rating shows once it has 3 reviews.
Review ConfigCat
Flagsmith
Nobody has reviewed Flagsmith yet. Its rating shows once it has 3 reviews.
Review FlagsmithThe facts
- What it does
- ConfigCatA hosted service for feature flag and configuration management
- FlagsmithOpen source feature flag service
- Free plan
- ConfigCatYes
- FlagsmithYes
- Pricing
- ConfigCatNot confirmed
- FlagsmithFlat monthly
- Paid plans from
- ConfigCatPro: $110 per month
What they share
From the platforms and integrations each website lists.
Platforms
Both
- API
- Slack
Only ConfigCat
- JetBrains
Only FlagsmithNothing else listed
Integrations
Both
- GitHub
- GitLab
- Jira
- Slack
- Datadog
- Amplitude
People who switched
Reviewers who say they used one of these before the other.
No reviewer has said they moved between ConfigCat and Flagsmith yet.
Used either of them?
Your review makes this comparison better for the next person. Review ConfigCat or review Flagsmith.