SignaKit vs Statsig
Both SignaKit and Statsig combine feature flags with experimentation and analytics — but they're built for different teams at different stages. This page breaks down where they overlap, where they diverge, and which is the better fit.
Last updated May 2026. Pricing and feature data verified from public sources.
Quick verdict
| SignaKit | Statsig | |
|---|---|---|
| Best for | Flags + experimentation at predictable cost | High-volume experimentation at enterprise scale |
| Pricing model | Event-based flat rate (flag evaluations free) | Event-based with $0.05/1K overage above 5M |
| Free tier | ✓1M events/mo, 3 members | ✓2M events/mo, unlimited seats |
| Multiple projects (paid) | ✓Up to 15 (Growth) | Enterprise only |
| Multi-armed bandit | ✓All plans | ✓(Autotune) |
| Advanced stats (CUPED, sequential) | ✕ | ✓Pro+ |
| Session replay | ✕ | ✓ |
| Slack notifications | ✓Starter+ | ✓ |
| Laravel SDK | ✓ | ✕ |
| OpenAI-owned | No | Yes (2025) |
Feature comparison
Feature flags
| SignaKit | Statsig | |
|---|---|---|
| Boolean flags | ✓ | ✓ |
| Multivariate flags | ✓ | ✓ |
| User/segment targeting | ✓ | ✓ |
| Percentage rollouts | ✓ | ✓ |
| Kill switches | ✓ | ✓ |
| Dark launches | ✓ | ✓ |
| Dynamic configs | — | ✓ |
| Parameter stores | — | ✓ |
| Flag lifecycle management | ✓ | ✓ |
| Flag audit log | ✓ | ✓ |
| Change reviews & approvals | — | ✓Pro+ |
| Flag scheduling | Planned | — |
Experimentation & analytics
| SignaKit | Statsig | |
|---|---|---|
| A/B testing | ✓All plans | ✓ |
| Multivariate testing | ✓ | ✓ |
| Multi-armed bandit | ✓All plans | ✓(Autotune) |
| Statistical significance (z-test) | ✓ | ✓ |
| Confidence intervals | ✓ | ✓ |
| CUPED variance reduction | ✕ | ✓Pro+ |
| Sequential testing | ✕ | ✓Pro+ |
| Mutually exclusive experiments | ✕ | ✓ |
| Holdout groups | ✕ | ✓ |
| Layers | ✕ | ✓ |
| Custom event tracking | ✓ | ✓ |
| Session replay | ✕ | ✓ |
Developer experience
| SignaKit | Statsig | |
|---|---|---|
| Node.js SDK | ✓ | ✓ |
| Browser SDK | ✓ | ✓ |
| React SDK | ✓ | ✓ |
| PHP SDK | ✓ | ✓ |
| Laravel SDK | ✓ | ✕ |
| Total native SDKs | 10 | 25+ |
| Flag evaluation in SDK (no server call) | ✓ | ✓ |
| <1ms evaluation latency | ✓ | ✓ |
Infrastructure & security
| SignaKit | Statsig | |
|---|---|---|
| Cloud hosted | ✓ | ✓US-hosted |
| Role-based access | ✓ | ✓Enterprise only |
| SSO/SAML | Planned | ✓Enterprise |
| Multiple projects | ✓Starter+ | Enterprise only |
| Slack + email notifications | ✓Starter+ | ✓ |
| Warehouse integrations | — | ✓Enterprise |
| Uptime SLA | — | 99.99% |
⚠ = restricted to a higher tier · — = not yet available or not applicable
Pricing comparison
Statsig
As of May 2026
| Plan | Price | Events/mo |
|---|---|---|
| Developer | Free | 2M |
| Pro | $150/mo | 5M (then $0.05/1K) |
| Enterprise | Custom | Unlimited |
Overage risk on Pro: $0.05 per 1,000 events above 5M/month. A traffic spike or campaign launch can significantly increase your monthly bill. Advanced stats (CUPED, sequential testing) require Pro+. Multiple projects require Enterprise.
SignaKit
As of May 2026
| Plan | Monthly | Events/mo | Projects |
|---|---|---|---|
| Free | $0 | 1M | 1 |
| Starter | $39 | 5M | 3 |
| Growth | $119 | 25M | 15 |
| Enterprise | Contact | Unlimited | Unlimited |
Flag evaluations are always free. Overages are flat-rate ($2–$3/M) — no per-1K event charges. Multiple projects included from Starter.
Where each platform wins
Statsig wins
Statistical sophistication
CUPED variance reduction, sequential testing, holdout groups, mutually exclusive experiments, and Layers. If you run hundreds of concurrent experiments and need the most rigorous statistical toolkit, Statsig is the specialist.
Scale and infrastructure
1 trillion events per day, 2.5 billion unique monthly experiment subjects, and 99.99% uptime. For teams at extreme scale, Statsig's infrastructure credibility is real.
Session replay built in
Statsig includes session replay alongside analytics and experimentation — a genuine all-in-one for understanding user behavior before and after a flag change.
Broad SDK coverage
25+ SDKs cover virtually every language and mobile platform.
SignaKit wins
Predictable pricing without overage surprises
Statsig Pro charges $0.05 per 1,000 events above 5M/month — a high-traffic experiment week can spike your bill significantly. SignaKit's flat-tier overages and free flag evaluations make costs predictable.
Multiple projects on paid plans
Statsig locks multiple projects behind Enterprise pricing. SignaKit Starter gives you 3 projects and Growth gives you 15 — essential for teams managing multiple products or client accounts.
Laravel SDK
SignaKit has a dedicated `flags-laravel` SDK. Statsig doesn't offer Laravel support, which matters for PHP teams using the framework.
Independent roadmap
SignaKit is an independent company focused on experimentation and developer tooling. Statsig's future direction is tied to OpenAI's priorities — a consideration for teams evaluating long-term vendor stability.
Who should choose which
Choose Statsig if…
- You run hundreds of concurrent experiments and need CUPED, sequential testing, holdouts, and mutually exclusive experiment groups
- You need session replay alongside experimentation in a single platform
- You're operating at massive scale (billions of users, trillions of events) and need proven infrastructure
- Your team has data science resources who will use Statsig's advanced statistical output
- You're building an AI-native product and the OpenAI alignment is a feature, not a concern
Choose SignaKit if…
- You want feature flags, A/B testing, and multi-armed bandit without paying $150/month minimum or worrying about overage charges
- You're managing multiple products or projects and don't want to be forced into Enterprise pricing
- You're building on PHP or Laravel — SignaKit has native SDKs, Statsig doesn't
- You want predictable billing with no per-event overage surprises during traffic spikes
- You want Slack notifications without enterprise-level spend
Frequently asked questions
Is SignaKit a fair Statsig alternative for early-stage teams?
Yes. SignaKit covers feature flags, A/B testing, multi-armed bandit, and custom event analytics — the core of what most early-to-mid stage teams actually use from Statsig. Statsig's advanced statistical features (CUPED, sequential testing) are mostly relevant to teams running large-scale concurrent experiments with dedicated data science support.
Does SignaKit have a free tier?
Yes — up to 1M events/month, 3 members, and 1 project. No credit card required.
Do flag evaluations count toward SignaKit's event limit?
No. Flag evaluations happen inside the SDK with no server call. Only exposure events (once per user per flag per session) and custom metric events count.
What happened with Statsig's OpenAI acquisition?
Statsig was acquired by OpenAI in 2025. The platform continues to operate, but its long-term product roadmap as a standalone experimentation tool is uncertain. Teams evaluating Statsig should factor vendor stability into their decision.
Can I run multiple projects on Statsig Pro?
No — Statsig Pro is limited to one project. Multiple projects require Enterprise pricing. SignaKit Starter gives you 3 projects and Growth gives you 15.
Does Statsig support Laravel?
No. Statsig doesn't have a Laravel SDK. SignaKit has a dedicated `@signakit/flags-laravel` SDK with native support.
What are the overage charges on Statsig Pro?
Statsig Pro charges $0.05 per 1,000 events above the 5M monthly cap. A high-traffic experiment launch or marketing campaign can spike your bill significantly. SignaKit overages are flat-tier ($2/M) and flag evaluations never count.
Start free. No credit card required.
Free forever on the first million events. A/B testing and multi-armed bandit included on all plans.