An all-in-one alternative to LaunchDarkly: Statsig

Every engineering team faces the same dilemma: you need feature flags for safe deployments, but you also need experimentation to measure impact. LaunchDarkly pioneered the feature flag category, but their platform treats experimentation as a costly add-on - forcing teams to purchase multiple products that don't work together seamlessly.

Enter Statsig: a unified platform that combines feature flags, experimentation, and analytics into one integrated system. Built by the team behind Facebook's experimentation infrastructure, it delivers enterprise capabilities at a fraction of the cost.

Company backgrounds and platform overview

Statsig emerged from Facebook's experimentation culture in 2020. Founder Vijaye Raji spent years building Facebook's internal testing tools before launching Statsig. His mission was simple: give every company access to the same experimentation infrastructure that powers the world's largest tech companies.

LaunchDarkly took a different path. Founded in 2014, they focused on helping enterprise DevOps teams control releases and reduce deployment risk. Their platform emphasizes progressive delivery - the practice of gradually rolling out features while monitoring for issues. It's a solid approach that earned them market leadership in feature flagging.

But here's where the philosophies diverge. LaunchDarkly built their reputation on release management and controlled deployments. They view experimentation as something you might want to add later. Statsig flips this: every feature release is a potential experiment, with measurement and analysis built in from day one.

This fundamental difference shapes everything. LaunchDarkly excels at sophisticated targeting rules and governance workflows that enterprise teams need for complex deployments. Statsig attracts data-driven teams who want to run hundreds of experiments monthly - teams at OpenAI and Notion who need Facebook-level capabilities without building them internally.

Feature and capability deep dive

Experimentation and A/B testing capabilities

LaunchDarkly offers basic A/B testing that gets the job done for simple experiments. You can test variations, measure conversion rates, and see which version performs better. Standard statistical models handle the analysis. It works fine if you're running a handful of tests each quarter.

But what happens when you need more? Statsig provides the advanced statistical methods that sophisticated teams require:

• CUPED for variance reduction: Reduce experiment runtime by 30-50% using pre-experiment data

• Sequential testing: Monitor results continuously without inflating false positive rates

• Automatic heterogeneous effect detection: Discover which user segments respond differently to changes

• Stratified sampling: Ensure balanced assignment across critical user segments

• Switchback testing: Handle network effects and marketplace dynamics

• Non-inferiority tests: Prove new features don't harm key metrics

LaunchDarkly simply doesn't offer these capabilities. Teams at OpenAI and Notion run hundreds of experiments monthly using these advanced techniques. Without them, you're stuck with longer experiment runtimes and less reliable results.

Feature flag management and targeting

Both platforms deliver enterprise-grade feature flagging. You get:

• Environment-specific configurations (dev, staging, production)

• User and attribute-based targeting

• Percentage rollouts with gradual ramp-ups

• Kill switches and automated rollbacks

• SDK support across languages and frameworks

The real difference? Cost and accessibility. Statsig offers unlimited free feature flags at any usage level. No limits on flags, environments, or monthly active users. LaunchDarkly charges based on MAU - a model that Reddit users find expensive once you hit millions of sessions.

One G2 reviewer captured it perfectly: "We use Trunk Based Development and without Statsig we would not be able to do it." The unlimited model enables teams to flag liberally without worrying about costs.

Analytics and data infrastructure

Statsig's infrastructure is built for scale: over 1 trillion events processed daily with 99.99% uptime. This isn't just about handling volume - it's about providing comprehensive analytics without switching tools:

• Funnel analysis with drop-off visualization

• Cohort segmentation and retention curves

• Growth accounting metrics

• Percentile-based performance analysis

• Custom metric definitions and calculations

You can trace user journeys, measure feature adoption, and understand long-term impact. Everything connects: flag a feature, run an experiment, analyze the results.

LaunchDarkly recently added warehouse-native analytics, but it's clearly an afterthought. Basic dashboards show flag exposure and simple metrics. For deeper analysis? You'll need a separate analytics tool. This fragmentation forces teams to stitch together insights across multiple platforms.

Pricing models and cost analysis

Subscription tiers and included features

LaunchDarkly's pricing structure reveals their enterprise focus. The free Developer plan works for hobby projects but caps at 1,000 MAU. Step up to the Foundation tier and you're paying $8.33 per 1,000 MAU when billed annually. Need experimentation? That's a separate purchase. Want analytics? Another SKU.

Enterprise pricing requires custom quotes - and user reports paint a sobering picture. One Reddit thread mentions quotes exceeding $40,000 annually for applications with just a few million sessions. Another user questioned whether LaunchDarkly's features justify the premium compared to alternatives.

Statsig takes the opposite approach with its generous free tier:

• 50,000 session replays monthly

• Unlimited feature flags

• All core experimentation features

• No seat limits or user restrictions

When you do need to pay, it's transparent usage-based pricing. You pay for analytics events and session replays - not feature flag checks or team members. Everything is bundled: flags, experiments, and analytics work together without separate purchases.

Real-world cost scenarios

Let's run the numbers. Your SaaS app has 5 million MAU. With LaunchDarkly's Foundation tier, that's approximately $41,650 monthly just for feature flags. Add experimentation and analytics? Budget another $20-30K monthly for those modules.

Statsig's pricing for the same usage stays predictable and significantly lower. According to pricing comparisons, teams typically save 50% or more versus traditional solutions. More importantly: no surprise bills when you add a new feature or run more experiments.

Don Browning, SVP at SoundCloud, explained their decision: "We evaluated Optimizely, LaunchDarkly, Split, and Eppo, but ultimately selected Statsig due to its comprehensive end-to-end integration." The bundled approach eliminated complexity and reduced total cost.

Hidden costs and long-term implications

LaunchDarkly's modular pricing creates organizational friction. Each product needs:

• Separate budget approval

• Different implementation timelines

• Multiple vendor relationships

• Disconnected data and insights

Teams discover these pain points after committing. You implement feature flags, then realize you need experimentation. But that's a new purchase order, another integration, and months of delay.

Statsig eliminates these hurdles. One platform, one price, complete functionality. The warehouse-native deployment option adds another advantage: your data stays in your infrastructure. No vendor lock-in, no migration headaches if you outgrow the platform.

Decision factors and implementation considerations

Onboarding and time-to-value

Speed matters when building a culture of experimentation. Notion scaled from single-digit to 300+ experiments quarterly using Statsig. How? The platform enables first experiments within weeks, not months. SDKs drop in easily. Metrics calculate automatically. Teams start learning immediately.

LaunchDarkly's longer implementation timeline stems from its modular approach. First you configure feature flags. Then you add targeting rules. Eventually you might add experimentation - but each step requires separate setup and training. Runna launched over 100 experiments within their first year on Statsig. LaunchDarkly users report months before meaningful testing begins.

Support quality and documentation

Both platforms provide solid documentation, but support experiences differ dramatically. Statsig offers direct Slack access where engineers get immediate responses. Questions about statistical methodology? The data science team jumps in. Implementation issues? Sometimes the CEO responds directly.

LaunchDarkly follows traditional enterprise support: submit tickets, wait for SLAs, escalate if needed. It works, but lacks the immediacy modern teams expect.

The bigger differentiator is expertise. Statsig includes dedicated customer data science teams who help with:

• Experiment design and power calculations

• Statistical methodology selection

• Metric definition and instrumentation

• Results interpretation and decision-making

LaunchDarkly focuses on technical implementation support. When you need help understanding why an experiment showed unexpected results, that expertise gap becomes apparent.

Enterprise scalability and compliance

Raw scale tells part of the story. Statsig processes 2.3 million events per second and maintains 99.99% uptime. OpenAI, Figma, and Anthropic trust the platform with billions of user interactions. The infrastructure handles sudden traffic spikes without degradation.

But scale isn't just about volume - it's about organizational complexity:

• Multiple teams running experiments simultaneously

• Governance and approval workflows

• Audit trails and change history

• Role-based access controls

• SOC 2 and GDPR compliance

Both platforms check these enterprise boxes. The difference emerges in practice. Reddit discussions highlight LaunchDarkly performance concerns at scale. Users question whether the premium pricing delivers proportional value. Meanwhile, Statsig customers report smooth scaling from dozens to hundreds of concurrent experiments.

Bottom line: why is Statsig a viable alternative to LaunchDarkly?

Statsig delivers Facebook-grade experimentation infrastructure at half the cost of LaunchDarkly's fragmented offerings. While LaunchDarkly charges separately for flags, experiments, and analytics, Statsig bundles everything in one integrated platform. No more stitching together multiple tools or managing separate vendor relationships.

The technical advantages are clear. Statsig offers sophisticated capabilities that LaunchDarkly simply doesn't have: CUPED variance reduction, sequential testing, stratified sampling. These aren't academic features - they're practical tools that help teams run better experiments faster. OpenAI, Notion, and Brex process billions of events daily through this infrastructure.

Cost differences compound over time. LaunchDarkly becomes prohibitively expensive at scale - users report quotes exceeding $40,000 annually for modest usage. Statsig's pricing analysis shows LaunchDarkly as the most expensive option after just 100K MAU. Meanwhile, Statsig offers unlimited free feature flags regardless of scale.

The platform's warehouse-native deployment provides crucial flexibility. Keep your data in your own infrastructure while accessing enterprise features. This approach matters for companies with strict compliance requirements or significant existing data investments. You maintain control without sacrificing capability.

Don Browning from SoundCloud summarized their evaluation: "We evaluated Optimizely, LaunchDarkly, Split, and Eppo, but ultimately selected Statsig due to its comprehensive end-to-end integration." That integration isn't just convenient - it's transformative for how teams ship and measure features.

Closing thoughts

Choosing between LaunchDarkly and Statsig comes down to your priorities. If you need a pure feature flagging solution with extensive enterprise controls, LaunchDarkly works well - assuming you can afford it. But if you want to build a culture of experimentation with integrated flags, testing, and analytics, Statsig offers a more complete solution at a fraction of the cost.

The best part? You can try Statsig's full platform free. No credit card, no sales calls. Just sign up and start experimenting. Compare it to your current setup and see the difference firsthand.

For teams ready to dive deeper:

• Check out Statsig's pricing calculator to compare costs

• Read how Notion scaled their experimentation program

• Explore the technical documentation for implementation details

Hope you find this useful!