LaunchDarkly alternatives: where to go and how to move your flags safely
Nine destinations, one for each reason to leave, and a seven-step migration plan.
The short answer: Unleash if your LaunchDarkly bill grows with your server count, since it charges per seat and doesn't meter users or evaluations. ConfigCat if you want flat tiers and unlimited seats. Flagsmith if you want to self-host with a real UI. PostHog if you want flags, product analytics and session replay in one place. Statsig or GrowthBook if your flags mostly power experiments. One thing to know before you choose: no vendor imports your LaunchDarkly targeting rules in one click. The safe path runs through OpenFeature, an open standard that lets you swap vendors without rewriting your flag calls. We compared all nine tools and pulled their official 2026 pricing.
Our ranking is editorial: a sponsored placement is always labeled on its card, and no affiliate link changes a score.
Why the LaunchDarkly bill eventually hurts
LaunchDarkly is still the name most teams think of for feature flags, and its free Developer plan is generous: unlimited seats and flags, 5 service connections, 1,000 client-side monthly active users. Teams leave later, once the architecture grows. These six reasons come up again and again.
Two meters on one invoice
The Foundation plan has no platform fee and no seat price. You pay for usage: $10 per service connection per month (one server-side SDK instance connected to one environment), plus a price per 1,000 client-side MAU. On that second meter, the pricing page shows two numbers: $8.33 on the plan card and $10 in the comparison table. Budget with $10 and you won't get surprised.
Staging, workers and serverless all count
Every environment counts, staging included. In Python and Ruby, each forked process is its own instance: a box running 8 worker processes is 8 connections. Polling SDKs such as PHP count one connection per 732 polling requests. Serverless is billed per connected minute. A modest architecture can easily carry several times more connections than servers.
Hard to forecast
On a monthly plan you commit to a number of service connections, and overage lands on next month's invoice. Enterprise contracts include a true-up. On review sites, the same complaint keeps showing up: context counting makes costs hard to predict. Ship a new microservice on a Friday and the month's bill can move.
The SDK is everywhere in your code
This is why plenty of teams stay even when they think it's too expensive. One engineer described LaunchDarkly getting extremely expensive while its calls had spread through the codebase so far they were hard to remove. His team ended up building a tool just to rip them out. The longer you wait, the more the exit costs.
Easy to create, hard to retire
Users say it themselves: a flag takes ten seconds to create and then lives for three years. The same reviews mention a targeting rule order that's poorly explained and large segments that slow the UI down. Every stale flag is a dead code path nobody dares to delete.
No self-hosting
LaunchDarkly is SaaS only. There's a dedicated EU region on AWS Frankfurt, but monitoring and the CDN stay in the US. One reviewer also reports that during past outages their flags rendered false or in an incorrect state. If flags gate critical paths, that dependency matters.
You're leaving because… go to…
The right LaunchDarkly alternative depends on what's pushing you out. Usually one line fits. Each card jumps to the full write-up below.
Per-seat pricing, client MAU and evaluations not metered.
You want a fixed price and the whole team insideConfigCatFlat tiers, unlimited seats on every plan.
You want to run it on your own infrastructureFlagsmithBSD-3 open source, with a proper UI.
You want flags and product analytics togetherPostHog1 million free flag requests a month, no seat fees.
You're done paying for flag checksStatsigUnlimited flag checks on every plan.
Your experiments live in your data warehouseGrowthBookWarehouse-native, unlimited flags on the free tier.
LaunchDarkly alternatives, tool by tool
For each tool: why switch to it, who it's for, its catch, how to migrate from LaunchDarkly, and what it costs. Prices come from official pricing pages in 2026. The first six have public pricing and a free option; the last three fit narrower cases. Notice that most of the top Google results for this query are written by the vendors themselves, each ranking itself first. This list isn't.
Unleash: when your bill tracks your server count
Our default pickWhy switch to Unleash. It flips LaunchDarkly's model. You pay per seat, and nothing else is metered: unlimited client-side MAU, flag evaluations not billed. Your cluster can go from 10 to 60 pods and the invoice stays put. The advice on developer forums is blunt: if you're on LaunchDarkly, switch to Unleash, it's per seat and a lot cheaper. Unleash also publishes the most detailed LaunchDarkly migration guide we read.
Who it's for. Product teams of 3 to 20 engineers running lots of services, workers or environments.
Who it's not for. A large org where fifty people need to toggle flags: at that point seats become the expensive variable.
The catch. Pay-as-you-go costs $75 per seat per month, cloud or self-hosted (5-seat minimum self-hosted), with 53 million API requests a month included, then $5 per million. A team of 10 pays $750 a month. The free open source edition is capped at 1 project, 2 environments and 5,000 flags, with no SSO and no change requests.
How to migrate. Export flags and segments through the LaunchDarkly REST API, rebuild contexts and segments first, then the flags. Unleash lists three gotchas: flag keys are unique per project in LaunchDarkly but per instance in Unleash, archived flags return false in Unleash, and the Unleash SDK polls by default where LaunchDarkly streams. Factor that delay into your cutover checks.
- Free
- self-hosted open source, 1 project
- Paid
- $75 per seat per month
- Hosting
- US or EU cloud, or your own
- Catch
- cost scales with headcount
ConfigCat: flat pricing with unlimited seats
Predictable pricingWhy switch to ConfigCat. It's the opposite of a bill that moves. You pick a tier, and every plan includes unlimited seats: engineering, product and support all get accounts without touching the price. The company is based in Budapest and states ISO 27001 certification and GDPR compliance, which helps if you sell into Europe.
Who it's for. Teams of any size that want one fixed line in the budget and lots of people in the tool.
Who it's not for. A small team that barely outgrows the free tier: there's no in-between step.
The catch. Forever Free covers 5 million config downloads a month. The next step is a jump: Pro at $110 a month (25 million), Smart at $325 (250 million), Enterprise at $900 (1 billion) and Dedicated at $4,500. Annual billing takes off up to 10%.
How to migrate. ConfigCat ships an OpenFeature provider. Rebuild your segments, then move flag by flag.
- Free
- 5 million config downloads/month
- Paid
- Pro at $110/month
- Seats
- unlimited on every plan
- Catch
- jump from $0 to $110
Flagsmith: open source with a UI your whole team can use
Self-hostingWhy switch to Flagsmith. It's open source under BSD-3 and runs as SaaS, in a private cloud, or self-hosted on Enterprise. You can start in the cloud and bring it in-house the day your security team asks. One engineer evaluating options for a .NET shop that needed self-hosting picked it for its UI and license after ruling LaunchDarkly out on price.
Who it's for. Teams that want control over hosting without giving up a UI that product and support can use.
Who it's not for. A consumer app evaluating flags in the browser on every page view: pricing is per request, and requests add up fast.
The catch. Free stops at 50,000 requests a month and one team member. Start-Up is $40 a month billed yearly ($45 monthly) for 1 million requests and 3 members. Scale-Up is $250 ($300 monthly) for 5 million requests and 5 members, extendable to 20 members at $50 to $60 each. Overage is $50 per million.
Pro tip. The first time you go over by less than 200%, Flagsmith gives you a 30-day grace period and keeps serving flags. You get time to pick the right plan without an outage.
How to migrate. Flagsmith has an OpenFeature provider: put OpenFeature in front of LaunchDarkly, then swap providers. Use the 14-day trial to rebuild your segments.
- Free
- 50,000 requests/month, 1 member
- Paid
- Start-Up from $40/month yearly
- License
- BSD-3 open source
- Catch
- priced per request
PostHog: flags next to your product analytics, no seat fees
All-in-one product stackWhy switch to PostHog. Flags sit next to product analytics, session replay and experiments. Roll a feature out to 10% of users and see what they do with it in the same tool. There's no per-seat pricing, so the whole team gets in.
Who it's for. Product-led startups already paying for an analytics tool on top of LaunchDarkly and looking to drop one.
Who it's not for. A platform evaluating server-side flags at huge volume that wants nothing else: you pay per request.
The catch. The first million requests a month are free. After that, a request costs $0.0001 from 1 to 2 million, $0.000045 from 2 to 10 million, $0.000025 from 10 to 50 million, then $0.00001. Example: 10 million requests a month comes to about $460.
Pro tip. Set a billing limit. Past it, the flags endpoint returns quota_limited and your SDKs serve the default value, so give every flag a safe default. Turn flags off in CI, too, where they eat quota for nothing. If you run automations on n8n, PostHog on n8n shows how to wire up your events.
How to migrate. PostHog has an OpenFeature provider. Rebuild your LaunchDarkly segments as cohorts before you create the flags.
- Free
- 1 million requests/month
- Paid
- from $0.0001 per request
- Seats
- not billed
- Catch
- cost scales with requests
Statsig: free flag checks, with a question mark on the roadmap
Free flagsWhy switch to Statsig. Flag checks are unlimited on every plan, and rollouts at 0% or 100% aren't billed. You pay for analytics events, not for flags. One engineer says they rolled it out at two companies as a LaunchDarkly replacement and loved it both times. Another, comparing options, put it simply: not LaunchDarkly or Split, which have gotten really expensive; Statsig has a really good offering.
Who it's for. Product teams that want flags plus experimentation without a meter on flag checks.
Who it's not for. A company signing a five-year deal that needs a guaranteed roadmap.
The catch. OpenAI announced it was acquiring Statsig in 2025. Statsig still operates out of Seattle, but nobody knows yet what the product will become. The Developer plan is free up to 2 million events a month, with 50,000 session replays and unlimited seats. Pro is $150 a month for 5 million events, then $0.05 per 1,000.
How to migrate. Statsig has an OpenFeature provider, which is exactly why you should use it: if the offer changes after the acquisition, you can move again without touching your code.
- Free
- 2 million events/month
- Paid
- Pro at $150/month
- Flags
- unlimited checks
- Catch
- roadmap after acquisition
GrowthBook: experiments measured in your own warehouse
ExperimentationWhy switch to GrowthBook. It connects to your data warehouse and reads experiment results there, instead of asking you to ship your events to yet another vendor. If your data team already owns clean event tables, that's one less pipeline.
Who it's for. Teams that mostly use flags to compare two versions of a feature and already have a warehouse.
Who it's not for. A team without a warehouse that just wants on/off switches.
The catch. Cloud Starter is free for 3 users and 1 project, with unlimited flags and traffic. Pro is $40 per seat per month, up to 30 users and 3 projects. The self-hosted open source edition is free with unlimited users, but only 1 project.
Pro tip. Unlimited flags and traffic on the free tier means a three-person team can run all of production on Starter.
How to migrate. Go through OpenFeature, GrowthBook has a provider. For marketing-side experiments, our ranking of heatmap and experimentation tools for SaaS covers the visual editors.
- Free
- 3 users, unlimited flags
- Paid
- Pro at $40 per seat/month
- Best for
- warehouse-native experiments
- Catch
- 1 project on free
DevCycle: the LaunchDarkly model, built on OpenFeature
OpenFeature-nativeWhy switch to DevCycle. It's built around OpenFeature and doesn't charge for seats. If you're adopting OpenFeature to leave LaunchDarkly, DevCycle is the tool where that standard is least of an add-on.
Who it's for. B2B teams whose client-side MAU stays moderate.
Who it's not for. A high-traffic consumer app: like LaunchDarkly, DevCycle meters client-side MAU. You'd be trading one MAU bill for another.
The catch. Free covers 1,000 client-side MAU with unlimited seats. Business is $500 a month billed yearly for 100,000 MAU, then $2.50 per 1,000. Enterprise is quote-based.
How to migrate. Put OpenFeature in front with the LaunchDarkly provider, then swap in DevCycle's provider flag by flag.
- Free
- 1,000 client-side MAU
- Paid
- Business at $500/month yearly
- Seats
- unlimited
- Catch
- still billed on MAU
Flipt: flags that live in Git, like your code
GitOps flagsWhy switch to Flipt. Your flags live in your Git repo, with history, review and rollback, like everything else you ship. The server is a single binary with no dependencies, and it speaks OpenFeature, REST and gRPC.
Who it's for. Platform teams that want every flag change to go through a pull request.
Who it's not for. A team where product or marketing needs to flip features on their own without an engineer.
The catch. You host and monitor it. Open source is free; Pro is $200 a month for up to 10 instances, adds pull requests created from the UI, and comes with a 14-day trial. No per-seat pricing.
How to migrate. Export your LaunchDarkly flags as JSON through the API, convert them to Flipt's format and commit them. Converting targeting rules stays manual.
- Free
- open source, single binary
- Paid
- Pro at $200/month
- Seats
- not billed
- Catch
- you run the infrastructure
GO Feature Flag: the most lightweight option, completely free
Free, no databaseWhy switch to GO Feature Flag. It's an MIT-licensed open source project, free, with no database, designed for OpenFeature from day one. Your flags are files sitting in Git or an S3 bucket.
Who it's for. A small engineering team that uses flags as release toggles and doesn't need a dashboard.
Who it's not for. Anyone who wants a UI. A team that shortlisted it described it exactly that way: free, no UI, flags as JSON or YAML in GitHub.
The catch. There's no commercial vendor behind it, so no support contract. Operations are on you.
How to migrate. Add OpenFeature with the LaunchDarkly provider, write your flags as files, then swap providers. Start with simple flags that are fully on or fully off.
- Price
- free, MIT license
- Storage
- files in Git or S3
- Standard
- OpenFeature-native
- Catch
- no UI
The 9 alternatives side by side
Our default pick: Unleash if your bill tracks your servers, ConfigCat if you want a fixed price. What matters most is the billing unit: service connections and MAU at LaunchDarkly, seats at Unleash and GrowthBook, requests at Flagsmith and PostHog, config downloads at ConfigCat, events at Statsig. A rough example for a 5-engineer team running 30 service connections: about $300 a month at LaunchDarkly before any client-side MAU, $375 at Unleash no matter how many servers, $110 at ConfigCat if Pro covers your traffic. Harness FME (formerly Split), Optimizely and Wingify (AB Tasty plus VWO) target large enterprises and publish no pricing, so they're not in this table.
| Free or open source | First paid plan and billing unit | |
|---|---|---|
| LaunchDarklyWhere you start | Developer: 5 service connections, 1,000 client-side MAU | Foundation: $10 per service connection a month, plus $8.33 or $10 per 1,000 client-side MAU |
| UnleashPer seat | Self-hosted open source: 1 project, 2 environments | $75 per seat a month; MAU and evaluations not metered |
| ConfigCatFlat price | 5 million config downloads a month | Pro $110 a month; unlimited seats |
| FlagsmithSelf-hosting | 50,000 requests a month, 1 member; BSD-3 open source | Start-Up $40 a month yearly (1 million requests, 3 members) |
| PostHogWith analytics | 1 million requests a month | $0.0001 per request from 1 to 2 million, cheaper after; no seats |
| StatsigFree flags | 2 million events a month, unlimited seats | Pro $150 a month (5 million events) |
| GrowthBookExperimentation | 3 users, 1 project, unlimited flags; open source | Pro $40 per seat a month |
| DevCycleOpenFeature-native | 1,000 client-side MAU | Business $500 a month yearly (100,000 MAU) |
| FliptFlags in Git | Open source, single binary | Pro $200 a month for up to 10 instances |
| GO Feature FlagMost lightweight | Free, MIT license, no UI | No paid plan |
Starting prices before tax, in USD, from official pricing pages in 2026, subject to change. Always run the numbers on your real architecture.
Migrating off LaunchDarkly in seven steps
Order matters. Each step protects something: users mid-rollout, your bill during the transition, your codebase. Unleash says teams are usually productive in the new tool within days, while legacy flags take weeks to months to move. This plan follows that pace.
Audit your flags and clean house
Week 1List every flag and its state: on for everyone, off for everyone, partially rolled out, or tied to an experiment. Flags that have been at 100% for months don't get migrated. Remove them from the code and make the value permanent. Same for flags that are off and forgotten.
Why? Every flag you carry over costs you twice: once to rebuild it, then again as debt in the new tool. On an older account, this cleanup alone can remove a big chunk of the work.
- Output
- one row per flag
- Payoff
- fewer flags to move
Cut your LaunchDarkly bill while you migrate
SavingsMigration takes weeks, so shrink what you pay in the meantime. Set applicationId in every SDK to see which app consumes what. Turn the SDK off in staging and CI environments that don't need it. If you run lots of instances, put the Relay Proxy in front, so LaunchDarkly counts the SDKs connected to it instead of every server.
Check your commitment as well: monthly plans commit you to a service connection count, and Enterprise contracts include a true-up. Note the end date.
- Levers
- applicationId, Relay Proxy
- Check
- contract end date
Put OpenFeature in front of LaunchDarkly
The key stepOpenFeature is an open standard (a CNCF incubating project, Apache 2 licensed) that adds a vendor-neutral layer between your code and your flag tool. You replace direct LaunchDarkly SDK calls with OpenFeature calls, with the LaunchDarkly provider behind them. Nothing changes for users.
After that, switching vendors means switching providers, not rewriting calls. Unleash, Flagsmith, ConfigCat, Statsig, PostHog, GrowthBook, Harness, Optimizely and flagd all have one. It's also your insurance for the next move.
- License
- Apache 2
- Result
- no more call rewrites
Export flags and rebuild segments first
DataExport your flags and segments as JSON through the LaunchDarkly REST API. Don't expect an import button in the other direction: LaunchDarkly's importer brings flags in from Unleash or Split, not out, and even it leaves targeting rules behind.
In the target tool, rebuild contexts first (your user attributes: country, plan, organization), then segments, then flags. A flag created before its segment points at nothing.
- Format
- JSON via REST API
- Order
- contexts, segments, flags
Run both tools side by side
SafetyFor a few days, query both tools for every flag behind a thin wrapper that compares answers and logs mismatches. LaunchDarkly stays the source of truth. Every mismatch shows you a badly rebuilt rule before a user ever sees it.
If anything automated reads LaunchDarkly, for instance through LaunchDarkly on Zapier, list it now: it will need rewiring to the new tool.
- Duration
- a few days
- Done when
- zero logged mismatches
Move 0% and 100% flags first
SequencingStart with flags that are fully on or fully off: they return the same answer everywhere. Leave partial rollouts for last. Each tool buckets users with its own hashing algorithm, so a user who saw the new feature at 50% in LaunchDarkly may not see it in Unleash.
The simple rule: migrate a partial rollout once it hits 0% or 100%, or accept that the split will reshuffle.
- First
- 0% and 100% flags
- Last
- partial rollouts
Shut LaunchDarkly off and remove the SDK
FinishOnce the mismatch log stays empty and every flag has moved, remove the LaunchDarkly SDK from your dependencies. Check every service: one forgotten worker will keep counting connections. Then cancel at your contract end date.
Keep the JSON export, it's the record of your targeting rules. And set a team rule going forward: every new flag gets an owner and a removal date.
- Keep
- the JSON export
- New rule
- removal date per flag
Is your tool missing from this page? Email us: hello@hackceleration.com
What makes a LaunchDarkly exit go wrong
The same mistakes show up in engineers' write-ups and in vendors' migration guides. None of them is a tooling problem. They're oversights, and each one costs more than the time it would have taken to avoid.
Moving a rollout mid-flight
A flag at 30% migrated as-is reshuffles your users, because hashing algorithms differ. On a checkout feature, some customers see the old flow, then the new one, then the old one again. Finish the rollout first, or warn your support team.
Carrying dead flags over
Every flag sitting at 100% for months is a dead code path. Migrating it means paying to rebuild it and keeping the debt. Cleaning up first takes an afternoon and lightens everything that follows.
Forgetting staging and CI
At LaunchDarkly, staging counts as service connections. At PostHog or Flagsmith, CI burns requests. Either way, turn flags off where they serve no purpose, or your new bill will look like the old one.
Comparing prices without comparing units
A seat, a service connection, a request, an event, a config download: five units for five vendors. Run the math on your real setup: number of engineers, services and workers, environments, and requests a month.
No plan for outages or quotas
At PostHog, past the billing limit, your SDKs get the default value. At Flagsmith, flags keep serving during the grace period. One LaunchDarkly reviewer reports flags rendering false during an outage. The fix is the same everywhere: a safe default written in code for every flag.
Ignoring where data lives
LaunchDarkly's EU region still keeps monitoring and the CDN in the US. If your customers ask, check before you sign: Unleash offers EU hosting, ConfigCat states GDPR compliance, and Flagsmith, Unleash, GrowthBook and Flipt all self-host. Moving off Firebase too? Our Firebase alternatives guide covers Remote Config.
LaunchDarkly alternatives: frequently asked questions
Is there a free alternative to LaunchDarkly?
Yes, several. GO Feature Flag is entirely free, with no UI. Unleash, Flagsmith, GrowthBook and Flipt have open source editions you host yourself. In the cloud, Statsig doesn't bill flag checks and ConfigCat stays free up to 5 million config downloads a month. Before leaving, look at LaunchDarkly's own Developer plan too: 5 service connections and 1,000 client-side MAU cover a small project.
How much does LaunchDarkly actually cost?
Foundation costs $10 per service connection per month, plus a price per 1,000 client-side MAU. On that second price the official page contradicts itself: $8.33 on the plan card, $10 in the comparison table. Budget $10 to be safe. Enterprise is quote-based, and Guardian is a separate paid add-on.
What is the best open source LaunchDarkly alternative?
Flagsmith if you need a polished UI, Unleash if you want the deepest LaunchDarkly migration docs, GO Feature Flag or Flipt if you'd rather keep flags in Git. Watch the free-edition limits: Unleash caps it at 1 project and 2 environments, GrowthBook at 1 project.
Which alternative is cheapest for a high-MAU consumer app?
Avoid anything that bills on client-side MAU, which rules out DevCycle as well as LaunchDarkly. Unleash doesn't meter MAU at all, Statsig doesn't bill flag checks, and ConfigCat charges per config download, which a cached SDK keeps low. PostHog and Flagsmith bill per request, so model your traffic first.
What is OpenFeature, and should I adopt it before migrating?
Yes, it's the best insurance you can buy for free. OpenFeature is a standard API for feature flags, a CNCF project under Apache 2. Your code calls OpenFeature, and a provider connects it to the vendor. A LaunchDarkly provider exists, so you can adopt OpenFeature before you even pick a destination.
Can I import my LaunchDarkly flags automatically?
Not in one click. The LaunchDarkly REST API exports flags and segments as JSON, and some vendors such as Unleash document how to bring them in. Targeting rules always need a manual check. LaunchDarkly's own import tool only runs the other way, from Unleash or Split.
What happened to Split and Statsig?
Split is now part of Harness, sold as Harness FME, an Enterprise module with no public pricing. OpenAI announced its acquisition of Statsig in 2025; Statsig still operates and its free tier is still generous, but its roadmap now depends on OpenAI. Put it behind OpenFeature and you can leave if things change.
What happens if my flag service goes down or I hit my quota?
Your code gets whatever default you defined. At PostHog, hitting the billing limit makes the endpoint return quota_limited and SDKs serve that default. At Flagsmith, flags keep serving for 30 days the first time you go modestly over. So give every flag a safe default, the one that breaks nothing if the service stops answering.
How long does a LaunchDarkly migration take?
According to Unleash, a few days for a team to be productive in the new tool, then a few weeks to a few months to move legacy flags. A cleanup before you start shrinks that second part a lot.
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