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Reviewed · Updated 2026-06-19

Split.io

An enterprise feature delivery platform that provides feature flagging, experimentation, and data-driven deployment capabilities.

Reviewed by the Conversion Gems editorial team ·
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Pricing
Paid
Best for
Split.io is designed for enterprise engineering teams, product managers, DevOps teams, and large organizations that need robust, scalable feature flagging and experimentation capabilities with enterprise-grade reliability
Category
Conversion Optimization (CRO)
The bottom line

Best-in-class enterprise feature flagging with native experimentation — now embedded in Harness's full DevOps suite.

7.3
Our score
7.3 / 10
Conversion Gems editorial verdict
Free (10 seats/10 flags); paid ~$33/seat/mo
Features9/10
9 - comprehensive flag types, progressive rollouts, experimentation, kill switches, and 50+ integrations; among the most capable in market.
Value6/10
6 - free tier is narrow; Growth pricing is opaque; Enterprise requires sales engagement, making true cost hard to self-assess.
Ease of use6/10
6 - developer SDK setup is straightforward, but full onboarding for experimentation and governance carries a notable learning curve.
Ecosystem8/10
8 - 50+ native integrations, strong CI/CD and data platform connectors, now natively embedded in Harness DevOps suite.
Support7/10
7 - thorough documentation and active developer community; dedicated support tiers only on Enterprise contracts.

Community ratings

4.6/ 5 aggregate · across 1 source
G2
4.6300+ reviews

Third-party ratings shown verbatim; aggregate weighted by review volume.

What it really is

Split.io (Harness FME) — enterprise feature flagging and experimentation platform.

Our take

Acquired by Harness in 2023, Split.io now operates as Harness Feature Management & Experimentation (FME) — though the split.io domain and brand persist. DB mislabels this as 'SEO' (it is a feature delivery and A/B testing DevOps tool) and marks it as paid-only, but a free Developer tier with 10 seats and 10 flags exists. Core differentiator: SDK-side flag evaluation means targeting logic fires locally, never exposing user data to Split's servers.

Why we rate it

Split pioneered the 'flag + metric' model, connecting every release to measurable business outcomes. Its architecture is more private and lower-latency than cloud-dependent competitors, and the Harness acquisition adds full CI/CD pipeline context few rivals can match.

The catch

Full experimentation capabilities and enterprise governance require the Enterprise tier (custom, contact sales); small teams hit free limits quickly and Growth plan pricing is not self-serve transparent.

Best for
Enterprise engineering teams managing progressive feature delivery at scale
Product teams wanting experiments tied directly to feature flag rollouts
DevOps/platform teams integrating feature management into CI/CD pipelines
Not good for
Small startups needing transparent, self-serve flat pricing
Teams requiring open-source or self-hosted feature flag options
Non-technical stakeholders wanting no-code feature toggle management
Friction report
Time to value
Moderate: SDK integration takes hours, not days; free tier onboards quickly but meaningful experimentation requires additional setup and data wiring.
Scale breakpoint
MTK-based billing escalates at high-traffic volumes; enterprise contracts required for advanced compliance and governance features.
Walled garden
High: flag history, experiment results, and targeting rules are tightly coupled to the Harness/Split platform with limited portability.

A look inside

Split.io product screenshot

Frequently Asked Questions

Alternatives

Step up

LaunchDarkly for more mature enterprise governance controls and a larger flag-management ecosystem.

Lighter alternative

Flagsmith (open-source/self-host) or PostHog feature flags for smaller teams wanting cost transparency.

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Tags

#Experimentation#ProductAnalytics#ABTesting

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