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Amplitude

Feature flags and A/B tests tied to product analytics

  • Researched profile
  • Free plan
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Starting price
Plus plan announced at $49 per month; check the pricing page for current terms
Free option
Free plan
Pricing
Free plan + paid
Deployment
Web
Integrations
2 listed

The lean-stack take

For a lean startup team it closes the Build-Measure-Learn loop. A team ships a change behind a flag, splits traffic, and reads the result against the metrics it already tracks in Amplitude.

Best for

Product teams that already track events in Amplitude and want flags and A/B tests read against the same metrics.

Watch out for

Check which plan includes Feature Experimentation and Web Experimentation, and what event or user limits apply, before you commit.

About

About Amplitude

Amplitude is a product analytics platform made by Amplitude, Inc., a publicly listed company. Its experimentation product, now called Amplitude Feature Experimentation, runs A/B tests and feature flags on the same event data.

Written by lean-stack from Amplitude's public pages. Vendors can replace it with their own description by claiming this profile.

Features

What Amplitude offers

01

Feature flags

Flags turn a change on for chosen users or a percentage of traffic. This supports small batch releases and quick rollback if a change causes problems.

02

A/B and multivariate tests

Feature Experimentation splits users into variants and compares them on chosen metrics. This is the Measure step of Build-Measure-Learn.

03

Sequential testing

The docs describe sequential testing for statistical inference, with a T-test option as well. Teams can review results during a test without a fixed sample size.

04

Multi-armed bandits

Bandit experiments shift traffic toward better-performing variants while the test runs. This suits short campaigns where waste from a losing variant matters.

05

Mutual exclusion and holdouts

Mutual exclusion groups keep users out of overlapping tests. Holdout groups exclude a share of users to measure the long-run effect of many changes.

06

Local and remote evaluation

Server SDKs can evaluate flags locally without a network call, or remotely through Amplitude. SDKs are documented for Node.js, Python, Go and PHP, among others.

07

Web Experimentation

A separate Web Experimentation product reached general availability in October 2024. The docs say marketers can test page changes without an engineer.

08

Warehouse-native option

Amplitude offers a warehouse-native version and a Snowflake integration. Teams that keep event data in a warehouse can analyze it there.

Lean techniques supported

The lean practices Amplitude is built to support.

Pricing

Amplitude pricing

Checked October 25, 2026

Starting price

Plus plan announced at $49 per month; check the pricing page for current terms

Pricing
Free plan + paid
Free option
Free plan

How pricing works

Amplitude has a free plan and announced a $49 per month Plus plan; check the pricing page for Experiment access.

Amplitude has a free plan and announced the Plus plan at $49 per month. Which plans include Experiment features, and their limits, were not confirmed from search results.

See current prices on amplitude.com

Amplitude doesn't publish a full plan list, so we show what it does publish. Confirm prices with the vendor.

Strengths and limitations

What stands out, and what to watch

Strengths

  • Tests read against the same event data used for product analytics
  • Sequential testing lets teams check results during a test
  • Bandits, holdouts and mutual exclusion are documented
  • Free plan available, with a separate startups program
  • Server SDKs documented for several languages

Limitations

  • Which plans include Experiment features was not confirmed from search results
  • Experiment pricing and limits not confirmed; the $49 Plus price comes from a launch announcement
  • Gets most value when product events are already tracked in Amplitude
  • Feature and Web Experimentation are separate products, which adds setup choices
  • G2 and Capterra ratings not found in search results

Based on the vendor's published plans and documentation, not a hands-on test.

Fit

Is Amplitude right for your team?

A good fit if…

  • You already use Amplitude for product analytics
  • You want feature flags and A/B tests in one place
  • You run many tests and need holdouts or mutual exclusion
  • Marketers want to test web pages without engineering help

Look elsewhere if…

  • You do not track product events and only need a simple page split test
  • You need an on-premise deployment
  • You need a free, open-source flag tool you host yourself

Integrations

Connects with

  • Snowflake
  • Hightouch

From the vendor's own integrations list.

Support and training

Support
Help center, Community
Training
Docs, Developer docs
Deployment
Web

Reviews

What Amplitude users say

We haven't found published reviews of Amplitude on G2 or Capterra yet. Smaller lean tools often have none, so judge it on the facts above and a trial.

Similar tools

Amplitude alternatives

GrowthBook

Free plan + paid

Open-source, warehouse-native experimentation and feature-flag platform with Bayesian and frequentist stats engines.

A/B TestingFeature FlagsHypothesis testing

Optimizely

Price on request

Enterprise digital experience platform offering web and feature experimentation alongside CMS and personalization.

A/B TestingMultivariate TestingFeature Flags

PostHog

Free plan + paid

Open-source all-in-one product analytics with feature flags, A/B tests, session replay and surveys for fast iteration.

Build-Measure-LearnA/B TestingFeature Flags
Amplitude compared with GrowthBook, Optimizely, PostHog
ToolPricingStarting priceFree plan or trialDeployment
AmplitudeFree plan + paidPlus plan announced at $49 per month; check the pricing page for current termsFree planWeb
GrowthBookFree plan + paidFree; Pro $40 per seat/monthFree planWeb, Self-hosted
OptimizelyPrice on requestQuote-basedNone listedWeb
PostHogFree plan + paidFree tier; usage-based pricing above itFree planWeb, Cloud (US and EU), Open source

From each vendor's published pricing. Check current prices on their sites.

FAQ

Amplitude: common questions

What is Amplitude Experiment?
It is Amplitude's A/B testing and feature flag product, now named Amplitude Feature Experimentation on the vendor site.
Does it use sequential testing?
Yes. The docs describe sequential testing for statistical inference, and a T-test option is also documented.
Can marketers run tests without engineers?
Amplitude Web Experimentation is built for that. It reached general availability in October 2024.
Is there a free plan?
Yes, Amplitude offers a free plan. Which Experiment features it includes was not confirmed in this check.
Does it support multi-armed bandits?
Yes. The docs include a guide to multi-armed bandit experiments.
Which SDKs are available?
Experiment SDK docs exist for Node.js, Python, Go and PHP, among others.

For the Amplitude team

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Sources, checked October 25, 2026

Listed October 25, 2026.