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Flagsmith vs TeamCity

Flagsmith logo

Flagsmith

Software

Open-source feature flag and remote config platform

From
Free
Rated
-
Full reviewWebsite
TeamCity logo

TeamCity

Software

JetBrains continuous integration and delivery server

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Flagsmith the Free plan supports only a single team member, limiting collaboration for small teams.; TeamCity detailed pricing requires visiting a calculator and isn't transparent on the main pricing page.
  • They diverge on capability: Flagsmith covers Feature flags, TeamCity covers Build Chains.

Where they differ

Only the attributes on which Flagsmith and TeamCity actually diverge.

Attributes where Flagsmith and TeamCity differ
AttributeFlagsmithTeamCity
Platformsweb, apiweb, windows, mac, linux, api

Identical on both: starting price (Free), pricing model (freemium), free tier (Yes), user rating (Not yet rated), category (Unknown).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Flagsmith

  • Feature flags
  • Segments
  • A/B testing
  • Scheduled flags
  • SDKs
  • SAML/SSO

Only in TeamCity

  • Build Chains
  • Parallel Test Execution
  • VCS Integration
  • Build History & Analytics
  • Docker & Kubernetes Support
  • Access Control

What people use each for

The jobs each tool is most often brought in to do.

Flagsmith

  • Gradual feature rollouts across environmentsnot TeamCity
  • Remote configuration without redeploying codenot TeamCity
  • Running A/B tests tied to feature flagsnot TeamCity
  • Self-hosting feature flags for data residency requirementsnot TeamCity

TeamCity

  • Running build and test pipelines for enterprise software teamsnot Flagsmith
  • Self-hosting CI/CD infrastructure behind a firewallnot Flagsmith
  • Coordinating multi-stage build chains with dependenciesnot Flagsmith
  • Scaling build capacity with additional agentsnot Flagsmith

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Flagsmith

  • The Free plan supports only a single team member, limiting collaboration for small teams.
  • Exceeding request limits triggers overage charges after a one-time 30-day grace period.
  • Enterprise-grade SSO and governance are locked behind the Scale-Up and Enterprise tiers.
  • Self-hosting requires operating and updating the platform yourself, unlike a fully managed SaaS competitor.

TeamCity

  • Detailed pricing requires visiting a calculator and isn't transparent on the main pricing page.
  • Self-hosted setup and agent management require more operational overhead than fully managed CI/CD services.
  • Additional build agents and users are priced incrementally, which can add up for larger teams.
  • The UI and configuration model have a steeper learning curve compared to YAML-first CI tools.

Pricing, plan by plan

Flagsmith

Free
  • FreeFree
    • Up to 50,000 requests/month
    • 1 team member
    • Unlimited feature flags, environments, identities and segments
  • Start-Up$45/month
    • Up to 1,000,000 requests/month
    • 3 team members
    • Scheduled flags, 2FA, A/B testing, integrations, email support
  • Scale-Up$300/month
    • 5,000,000+ requests/month
    • 5-20 team members
    • SAML/SSO, governance features, priority support

TeamCity

Free
  • Free TierFree
    • Includes 3 build agents
    • 100 build configurations
    • On-premises or Cloud
  • TeamCity Cloud / On-Premises$undefined/month
    • Priced per additional build agent
    • Additional users on Cloud plans
    • Enterprise support options

Which should you pick?

Choose Flagsmith if

  • You need feature flags.
  • You want to start without paying.
  • You work on web, api.
  • You also want segments.
Flagsmith review

Choose TeamCity if

  • You need build chains.
  • You want to start without paying.
  • You work on web, windows, mac, linux, api.
  • You also want parallel test execution.
TeamCity review

Questions people ask

Is Flagsmith or TeamCity better?
Neither clearly leads. Flagsmith starts at Free and TeamCity at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Flagsmith or TeamCity?
Flagsmith starts at Free and TeamCity at Free.
Does Flagsmith or TeamCity run on more platforms?
Flagsmith runs on web, api. TeamCity runs on web, windows, mac, linux, api.
Can I use Flagsmith for free?
Both have a free tier, so you can try either at no cost before committing.
What is Flagsmith best used for?
Flagsmith is most often used for gradual feature rollouts across environments, remote configuration without redeploying code, running a/b tests tied to feature flags, self-hosting feature flags for data residency requirements. Of those, gradual feature rollouts across environments and remote configuration without redeploying code are not what TeamCity is typically brought in for.
What can Flagsmith do that TeamCity cannot?
Flagsmith covers Feature flags, Segments, A/B testing, Scheduled flags. TeamCity covers Build Chains, Parallel Test Execution, VCS Integration, Build History & Analytics.

Answered from the vendors’ own pages

Flagsmith: What does Flagsmith cost?

Flagsmith has a Free plan, a Start-Up plan from $40-45/month, a Scale-Up plan from $250-300/month, and custom Enterprise pricing.

Source
Flagsmith: Is there a free plan, and what are its limits?

The Free plan supports up to 50,000 requests per month and 1 team member, with unlimited feature flags, environments, identities and segments.

Source
Flagsmith: How is usage metered?

Usage is metered by monthly API requests; exceeding a plan's limit triggers overage charges starting around $50 per million requests, with a 30-day grace period the first time a paid plan exceeds its limit.

Source
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