Flagsmith
by Flagsmith · Open source feature flag and remote config service
BenchRank score
Screenshots of Flagsmith
Homepage
Overview
Flagsmith is a feature flag and remote config service. Developers wrap a section of code in a flag and toggle or configure it from Flagsmith per environment, individual user, segment or percentage of users, without a new deployment. It can be used as Flagsmith's hosted cloud, a managed private cloud, or self-hosted using Helm for Kubernetes or an OpenShift operator.
- Best for
- Development teams wanting feature flags they can run as SaaS, private cloud or self-hosted
- Pricing
- Free plan for 50,000 requests/month and 1 team member, then Start-Up at $45/month and Scale-Up at $300/month, with Enterprise by contact and Start-Up overages at $7 per 100k requests.
- Runs on
- WebSelf-hosted
Strengths and trade-offs
Strengths
- Open source, with SaaS, private cloud or on-prem deployment
- SDKs for React, iOS, Android, Python, Go, Ruby, .NET, PHP, Rust
- Free plan includes unlimited flags, environments and segments
- Segments, percentage rollouts and multivariate tests included
Trade-offs
- Free plan is 1 team member and 50,000 requests per month
- SAML/SSO, roles and audit logs need the $300/mo Scale-Up plan
- Extra Scale-Up seats cost $60 per member per month, capped at 20
- LDAP + SCIM and data-driven releases are marked as not yet available
Pricing
Published plans and prices from Flagsmith’s own pricing page.
How this score is made up
Each dimension is scored out of 100 and combined into the headline score using fixed weights.
MCP support
Whether an agent can drive the product through the Model Context Protocol, and how much setup that takes.
API quality
Public API surface: machine-readable spec, official SDKs, documented auth, errors, rate limits and versioning.
Documentation
Publicly reachable docs — coverage, freshness, code samples and machine readability.
Agent friendliness
How readable the site is to an automated client: llms.txt, structured data, server-rendered content, crawler access.
Pricing transparency
Whether real prices are published, self-serve signup exists, and usage costs are knowable without a sales call.
Changelog
A public, dated record of what shipped and when — the clearest signal that a product is still alive.
Marketing site structure
Whether the site answers a buyer's questions: clear positioning, the pages that matter, and accessibility.
Page speed
How fast the site loads for real visitors: Chrome UX Report 75th-percentile LCP, INP and CLS, with a Lighthouse mobile run standing in where a site has too little traffic for field data.
Operational trust
Status page and incident history, security disclosure, compliance and data-processing documentation.
Measured, but not part of the score
Useful to know, but not a mark for or against the product — so these do not affect the ranking.
Openness
Source availability, self-hosting, data export and open standards. Scored and shown, but not part of the composite — paid SaaS is not worse for being paid SaaS.
Maintenance
Release cadence and repository activity. Scored and shown, but not part of the composite — it is only measurable for open repositories.
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Where this comes from
The Flagsmith pages BenchRank reads when it scores the product — its documentation, release notes, status and security pages, and its repository where there is one.
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