Flagsmith
- Free allowance
- Free: up to 50,000 requests a month, 1 team member, 1 project, unlimited feature flags, environments, identities and segments, up to 100,000 users in experiments, API access
- Verdict
- caveatusable, with a named limit or an unprobed read path
- Cost
- free tier
- Identity
- emailno card, phone unknown
- Binding limit
- volume-quota50,000 requests per month
- Evidence
- documented33 sources; a first-party page was read and the sentence quoted
- Freshness
- stale on 2026-12-03checked 2026-11-02 (live); stale on 2026-12-03
| Free tier | Free: up to 50,000 requests a month, 1 team member, 1 project, unlimited feature flags, environments, identities and segments, up to 100,000 users in experiments, API access unit requests; metered on request-count; Only /flags, /identities, /traits and /environment-document count; one SDK instantiation that fetches flags is one request. Over the limit a free account is warned by email, and 7 days later the API stops answering until 30 days after the warning or an upgrade. Each project holds up to 1000 features and 500 segments. |
|---|---|
| Price | none stated |
| Limits |
1 team member and 1 project on Free; 1000 features and 500 segments per project. |
| Binding | volume-quota A server-rendered page fetches flags once per view, so 50,000 views a month uses the allowance; past it the Flags API is blocked 7 days after the warning email. |
| Identity | email The sign-up form asks for first name, last name, email address and a password, with no payment field; the sign-up page states a free for life plan. After registration the user is prompted to create an organisation. Whether a later step asks for a phone number is unverified: behind a sign-up. |
| Egress | not applicable: a flag service metered by request count; no traffic allowance is published |
| Per-object cap | a flag string value is at most 20,000 bytes and an identity trait value at most 2,000 bytes (20000 bytes) |
| Retention | unverified: no retention period for flags, identities or audit logs on the Free plan is stated on the pages read |
| Interface | rest Flags API at https://edge.api.flagsmith.com/api/v1/ with a public Environment Key in the X-Environment-Key header (a GET /flags/ without a key answered 401); Management API with a secret Organisation API Token, 500 requests per minute. endpoint: https://edge.api.flagsmith.com/api/v1/ |
| Tooling | Flagsmith SDKs or any HTTP client; the Management API covers everything the dashboard does. |
| Composes with | Remote config and kill switches for a small app on free compute, fetched once per page view or session to stay inside 50,000 requests a month. |
| Reliability | On the Free plan the API stops answering after the plan limit is exceeded and the 7-day warning passes; the block clears 30 days after the warning or on upgrade. SDK requests are not rate limited. |
| Notes | Start-Up raises the allowance to 1,000,000 requests a month after a 14-day trial. Flagsmith is also open-source software that the user can install and run on a rented or free machine; that is the last resort after the hosted Free plan. |
| Evidence note | documented Every value is quoted from the first-party pricing page, system limits, API docs and sign-up page; the Flags API host was probed and answered 401 without a key. A flag read with an Environment Key on a free account would move it to measured. |
| Parsed numbers |
|
Evidence 33
| date | source | what it proved |
|---|---|---|
| 2026-10-31 | www.flagsmith.com/pricing | Free includes up to 50,000 requests a month |
| 2026-10-31 | www.flagsmith.com/pricing | Free includes up to 100,000 users in experiments |
| 2026-10-31 | www.flagsmith.com/pricing | Free has 1 team member |
| 2026-10-31 | www.flagsmith.com/pricing | Free has 1 project; Start-Up has unlimited projects |
| 2026-10-31 | www.flagsmith.com/pricing | Free has unlimited feature flags |
| 2026-10-31 | www.flagsmith.com/pricing | Free has unlimited environments |
| 2026-10-31 | www.flagsmith.com/pricing | Free has unlimited identities and segments |
| 2026-10-31 | www.flagsmith.com/pricing | one SDK instantiation is one request |
| 2026-10-31 | www.flagsmith.com/pricing | only some endpoints count |
| 2026-10-31 | www.flagsmith.com/pricing | a free plan over the limit has 7 days |
| 2026-10-31 | www.flagsmith.com/pricing | a team member logs in with an email address |
| 2026-10-31 | www.flagsmith.com/pricing | Start-Up includes 1,000,000 requests a month |
| 2026-10-31 | www.flagsmith.com/pricing | Start-Up starts with a 14-day trial |
| 2026-10-30 | docs.flagsmith.com/administration-and-security/governance-an | a project holds up to 1000 features |
| 2026-10-30 | docs.flagsmith.com/administration-and-security/governance-an | a project holds up to 500 segments |
| 2026-10-30 | docs.flagsmith.com/administration-and-security/governance-an | a flag string value is at most 20,000 bytes |
| 2026-10-30 | docs.flagsmith.com/administration-and-security/governance-an | a trait value is at most 2,000 bytes |
| 2026-10-30 | docs.flagsmith.com/administration-and-security/governance-an | the API stops answering a free plan over its limit |
| 2026-10-30 | docs.flagsmith.com/administration-and-security/governance-an | the block follows a warning by 7 days |
| 2026-10-30 | docs.flagsmith.com/administration-and-security/governance-an | the block clears after 30 days or on upgrade |
| 2026-10-30 | docs.flagsmith.com/administration-and-security/governance-an | the Management API allows 500 requests a minute |
| 2026-10-30 | docs.flagsmith.com/administration-and-security/governance-an | part of the text of Reliability, above |
| 2026-10-30 | docs.flagsmith.com/administration-and-security/governance-an | a self-hosted deployment exists |
| 2026-10-31 | docs.flagsmith.com/integrating-with-flagsmith/flagsmith-api- | the Flags API uses a public Environment Key |
| 2026-10-31 | docs.flagsmith.com/integrating-with-flagsmith/flagsmith-api- | the Management API uses a secret Organisation API Token |
| 2026-10-31 | docs.flagsmith.com/integrating-with-flagsmith/flagsmith-api- | the Management API covers the dashboard |
| 2026-10-31 | docs.flagsmith.com/sdk-api/sdk-v-1-flags | the Flags API is served at edge.api.flagsmith.com/api/v1 |
| 2026-10-31 | docs.flagsmith.com/sdk-api/sdk-v-1-flags | the Flags API takes the X-Environment-Key header |
| 2026-10-31 | app.flagsmith.com/signup | the sign-up page states a free for life plan |
| 2026-10-31 | app.flagsmith.com/signup | the sign-up asks for first name, last name, email address and password |
| 2026-10-31 | probe: https://edge.api.flagsmith.com/api/v1/flags/ | edge.api.flagsmith.com/api/v1/flags/ answers 401 without a key |
| 2026-11-01 | www.flagsmith.com/blog/typescript-feature-flags-next-js-exam | after registration the user is prompted to create an organisation |
| 2026-11-01 | app.flagsmith.com/signup | the sign-up form asks for first name, last name, email address and password |