April 1, 2026

Statsig Alternatives in 2026

OpenAI bought Statsig for $1.1B; in May 2026 Amplitude took on its brand and customers. What that means for users — and the best Statsig alternatives now.

When OpenAI acquired Statsig for $1.1 billion in September 2025, the experimentation world collectively raised an eyebrow. Statsig was a beloved tool — fast, developer-friendly, and genuinely generous with its free tier. But acquisitions change things. Roadmaps shift. Pricing models "evolve." And suddenly, teams that built their entire experimentation stack on Statsig started asking: what's the best Statsig alternative?

If that's you, you're not alone. Whether you're worried about vendor lock-in, pricing changes, or simply want a tool that stays focused on A/B testing instead of becoming an AI product feature, this guide covers the best options in 2026.

Update: Amplitude Took On Statsig's Brand and Customers in May 2026

The situation changed again in 2026. On May 5, 2026, Amplitude announced it would “take on Statsig’s brand and customers” and would “maintain and develop the current Statsig platform across the cloud and data warehouse, including support for existing customers.” The engineering team that built Statsig stays at OpenAI — Amplitude said it will “work closely with the Statsig team at OpenAI during the transition” while it begins “building a more integrated roadmap for the future of the Amplitude and Statsig platforms together.”

So if what you actually came here to find out is whether Statsig is still independent in 2026: it is not. The short version:

September 2025: OpenAI acquires Statsig for $1.1 billion. Founder Vijaye Raji becomes OpenAI’s CTO of Applications. Statsig is initially described as continuing to operate independently out of Seattle.
May 2026: Amplitude takes on the Statsig brand, platform, and customer base. The team stays at OpenAI. The promise of operational independence is retired.
Still unresolved: Amplitude’s announcement did not say how pricing changes at renewal, or how two overlapping experimentation platforms reconcile over time.

That last point is the one that should drive your decision. Your contract now sits with an analytics vendor that already sells a competing experimentation product, and renewal is where the practical terms get set. If Amplitude is where Statsig is heading, it is worth reading our Amplitude Experiment alternative guide alongside this one.

Why Teams Are Looking for Statsig Alternatives

Statsig's free tier still exists. Its Developer plan publishes 2M events per month, unlimited flag and config checks, 50,000 session replays per month and unlimited seats. That is genuinely generous. But here's what's changed since the acquisition:

Ownership has changed twice: Statsig's founding CEO Vijaye Raji became OpenAI's CTO of Applications after the 2025 acquisition, and in May 2026 Amplitude took over the brand and customer base while the team stayed at OpenAI. The people who built the product and the company that now sells it to you are no longer the same.
Vendor uncertainty: Your experimentation stack is now owned by Amplitude — an analytics vendor that already ships its own competing experimentation product. Consolidating overlapping features is a normal thing for an acquirer to do.
Pricing uncertainty: The Pro plan starts at $150/month with 5M monthly events included, then charges $0.05 per 1,000 events beyond that. Usage-based overage escalates quickly for a growing team, and renewal terms now sit with a new owner.
Complexity for simple needs: Statsig was built for product engineering teams at scale. If you just need to A/B test a landing page, it's like using a sledgehammer to hang a picture frame.

The Best Statsig Alternatives in 2026

1. PageDuel — Best for Teams Who Just Want to Test

If Statsig was overkill for your needs, PageDuel is the antidote. It's an A/B testing platform built for marketers, founders, and small teams who want to run experiments without learning feature flags, SDKs, or statistical engines.

Price: Every plan starts with a 14-day free trial and no credit card. After that it is usage-based from $9/month for 10k monthly events on Starter ($19 on Growth), priced by event tier rather than by "contact sales".
Best for: Landing pages, headlines, CTAs, pricing pages — the tests that actually move revenue.
Setup: Add one script tag. Create variants visually. Get results. That's it.
No vendor lock-in: PageDuel is independent, open, and laser-focused on A/B testing.

Where Statsig tries to be an entire experimentation platform with feature flags, analytics, and session replays, PageDuel does one thing exceptionally well: lets you test two versions of a page and see which one wins. For most businesses, that's all you need. Check out our comparison of free A/B testing tools to see how it stacks up.

2. GrowthBook — Best Open-Source Self-Hosted Option

GrowthBook is the go-to for engineering teams that want full control over their experimentation data. It's open-source, warehouse-native, and completely free to self-host.

Price: Free self-hosted (unlimited users, 1 project) and a free cloud Starter tier for up to 3 users; cloud Pro is $40 per seat per month.
Best for: Data teams with existing data warehouses (BigQuery, Snowflake, Redshift).
Tradeoff: You need DevOps resources to host and maintain it. Not ideal for non-technical teams.

3. PostHog — Best All-in-One Product Analytics + Testing

PostHog bundles product analytics, session replay, feature flags, and A/B testing into one platform. It's popular with indie hackers and startup engineering teams.

Price: Free tier includes 1M feature flag requests/month. Paid plans scale with usage.
Best for: Product teams that want analytics and experimentation in one tool.
Tradeoff: The A/B testing is good but not PostHog's primary focus — analytics is.

We covered PostHog in depth in our Optimizely alternative guide — many of the same tradeoffs apply when comparing it to Statsig.

4. VWO — Best Enterprise-Grade Alternative

If you're migrating from Statsig because you need more marketing-friendly features, VWO is the enterprise standard. Visual editor, heatmaps, session recordings, and robust experimentation — all in one.

Price: Not published. VWO lists Growth, Pro and Enterprise tiers behind a "Schedule a Demo" button rather than public prices, alongside a free self-serve option to explore the product.
Best for: Marketing teams at mid-size to enterprise companies.
Tradeoff: Expensive. Overkill for startups and small teams. See our VWO alternative breakdown for context.

5. Eppo — Best for Data-Driven Product Teams

Eppo is warehouse-native like GrowthBook but with a more polished UI and stronger statistical rigor. It's gaining traction with data-mature product teams.

Price: Custom pricing (not cheap).
Best for: Teams that care deeply about statistical methodology and already use a data warehouse.
Tradeoff: No free tier. Complex setup. Built for companies with dedicated data teams.

Open-source Statsig alternatives, compared

“Open source” is the qualifier people most often add to this search, and it is also the one that hides the most fine print. Self-hosting removes the vendor, not the cost — and on two of the three main options, experimentation is precisely the part that is gated. Checked against each vendor's own pricing and documentation in September 2026:

Tool	Free tier	Self-hosting	Where experiments sit
GrowthBook	Cloud Starter is $0 for up to 3 users and 1 project	Yes — the open-source build is free with unlimited users and 1 project	Unlimited feature flags and experiments on both free options; cloud Pro is $40 per seat per month for up to 50 users and 3 projects
PostHog	1M analytics events and 1M feature-flag requests per month	Yes, MIT-licensed Docker Compose deployment — but officially unsupported, and all paid-plan features are cloud-only	Experiments are billed with feature flags, so experiment traffic draws down the same allowance your flags do
Flagsmith	$0 for 50,000 requests per month and 1 team member	Yes — on-premises or in your own cloud	A/B and multivariate testing starts on the $45/month Start-Up plan (1M requests, 3 team members)

The pattern worth naming: the flag engine is the free part; the experiment layer is what you pay for. GrowthBook is the genuine exception, since unlimited experiments ship in both its free cloud tier and its open-source build. Flagsmith puts A/B and multivariate testing behind its paid plan, and PostHog meters experiments through feature-flag requests, so a high-traffic test spends the same budget your flags do. If the reason you are leaving Statsig is a free tier you no longer trust, work out which of those meters your traffic actually hits before you commit to a migration — our breakdown of feature flags versus A/B testing explains why the two get billed together in the first place.

There is a second cost that none of these pricing pages shows. PostHog's own documentation is blunt that self-hosted deployments are “officially unsupported” and that it offers no guarantees or customer support for them. Self-hosting is free in licence terms and expensive in engineering time, which is the trade that matters most to a small team — the same calculation we walk through for teams weighing GrowthBook.

How to Choose the Right Statsig Alternative

Here's the decision framework:

You just want to A/B test pages → PageDuel (simple, no engineering required, from $9/month after the trial)
You need feature flags + self-hosting → GrowthBook (open-source, warehouse-native)
You want an all-in-one product tool → PostHog (analytics + flags + testing)
You have enterprise budget → VWO or Eppo (full-featured, premium pricing)

The biggest mistake teams make when leaving Statsig is replacing it with an equally complex tool. If you're running A/B tests without coding, you don't need feature flags, SDKs, or warehouse integrations. You need a tool that gets out of the way and lets you test.

The Bottom Line

Statsig is still a good product — but two ownership changes in under a year have left real questions about independence, focus, and what happens to pricing at renewal. If you're a small team, a startup looking for affordable A/B testing, or just someone who wants to run experiments without complexity, the alternatives have never been better.

PageDuel is independent, published pricing, and built for exactly this moment. Start on a 14-day trial without a card. No acquisitions. No pricing surprises. Just testing.

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