Software Development · head to head
Flagsmith vs Split
Flagsmith
Software Development
Open-source feature flag and remote config platform
- From
- Free
- Rated
- -
Split
Testing
Feature flags tied to a metrics pipeline that attributes production impact to each release, now Harness FME
- From
- On request
- Rated
- -
The short version
- Only Flagsmith has a free tier, so it costs nothing to try first.
- Each has a real cost: Flagsmith the Free plan supports only a single team member, limiting collaboration for small teams.; Split split is now a module of the Harness platform and split.io redirects to harness.io, so buying it means entering a Harness commercial relationship rather than a standalone flag vendor contract.
- They diverge on capability: Flagsmith covers Feature flags, Split covers Feature flags with targeting.
- Prices and features above were last checked on 31 August 2026.
Where they differ
Only the attributes on which Flagsmith and Split actually diverge.
Identical on both: user rating (Not yet rated).
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 Split
- Feature flags with targeting
- Metrics impact engine
- Guardrail metrics
- Statistical significance testing
- Event ingestion
- SDKs and streaming updates
- Audit and approvals
- Harness platform integration
What people use each for
The jobs each tool is most often brought in to do.
Flagsmith
- Gradual feature rollouts across environmentsnot Split
- Remote configuration without redeploying codenot Split
- Running A/B tests tied to feature flagsnot Split
- Self-hosting feature flags for data residency requirementsnot Split
Split
- A product organisation that wants every release measured against conversion and latency by default, not only deliberate experimentsnot Flagsmith
- Running A/B tests with real statistical significance rather than comparing two dashboard linesnot Flagsmith
- Catching a regression at five per cent rollout because a guardrail metric fires before the change reaches everyonenot Flagsmith
- A team already committed to Harness for CI and CD that wants flags in the same platform and contractnot 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.
Split
- Split is now a module of the Harness platform and split.io redirects to harness.io, so buying it means entering a Harness commercial relationship rather than a standalone flag vendor contract.
- Harness no longer publishes per-module prices, so an organisation that wants only feature management cannot get a list price and must negotiate a module out of a platform bundle.
- The measurement engine needs traffic volume to reach significance, so a product with modest usage gets flags with an experimentation layer it will rarely be able to conclude anything from.
- Metric attribution depends on correctly instrumented events flowing into Split, which is an integration project in its own right; without it you have paid for an experimentation platform and are using it as a flag switch.
- As part of a larger DevOps suite the roadmap now competes with CI, CD, security and cloud cost modules for attention, so feature management is no longer the company’s single focus the way it was as an independent product.
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$300/month
- 5,000,000+ requests/month
- 5-20 team members
- SAML/SSO, governance features, priority support
Split
On request- Harness FreeFree
- Harness Open Source and community support
- Intended for individuals and small teams
- Feature management capability limited at this tier
- Harness Essentials$undefined/year
- Bundled DevOps modules including CI, CD, IaC and security testing
- Standard support
- Pricing requires contacting sales
- Harness Enterprise$undefined/year
- Mix and match from 15 or more modules including Feature Management and Experimentation
- Premier support with a dedicated account manager
- Higher pipeline concurrency and organisation limits
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.
Choose Split if
- You need feature flags with targeting.
- You work on Web, API, iOS, Android, Java, Node.js, Python, Go, .NET.
- You also want metrics impact engine.
Questions people ask
- Is Flagsmith or Split better?
- Neither clearly leads. Flagsmith starts at Free and Split at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Flagsmith or Split?
- Flagsmith has a free tier; the other does not. Paid plans start at Free for Flagsmith and On request for Split.
- Does Flagsmith or Split run on more platforms?
- Flagsmith runs on web, api. Split runs on Web, API, iOS, Android, Java, Node.js, Python, Go, .NET.
- Can I use Flagsmith for free?
- Yes. Flagsmith has a free tier, so you can try it without paying. Split starts at On request.
- 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 Split is typically brought in for.
- What can Flagsmith do that Split cannot?
- Flagsmith covers Feature flags, Segments, A/B testing, Scheduled flags. Split covers Feature flags with targeting, Metrics impact engine, Guardrail metrics, Statistical significance testing.
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.
SourceSplit: Is Split still called Split?
It is now sold as Harness Feature Management and Experimentation after the Harness acquisition, and split.io redirects to harness.io.
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.
SourceSplit: Can I buy just feature flags?
Not from a price list. Harness publishes bundle tiers and directs single-module buyers to sales.
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.
SourceSplit: What does it do that a plain flag service does not?
It attributes changes in your product metrics to specific flags with statistical significance testing and alerts on guardrail metrics.
Split: Do we need a lot of traffic?
Yes. Statistical tests need volume to conclude, so low-traffic products get limited value from the measurement layer.
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- Split vs Eppo
- Split vs GrowthBook
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- Split vs Selenium
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- Split vs Katalon
- Split vs Sauce Labs
- Split vs Applitools
- Split vs QA Wolf
- Split vs BrowserStack
- Split vs CircleCI
- Split vs Robot Framework
- Split vs Testsigma
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- Split vs Cucumber
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