Best Feature Flag Software in 2026: Ranked by Job, Price, and Whether $0 Buys 10 Flags or 1,000 MAUs
ConfigCat, Statsig, LaunchDarkly, and Unleash solve different jobs. We ranked 4 feature-flag platforms by flag-count vs event vs service-connection-plus-MAU vs seat, and what a $0–$150 plan actually keeps after the 11th flag, the $8.33 vs $10 MAU, and an OSS Edge that dies on 31 Dec 2026.
Feature flag software is not vibe coding. It is not a landing-page A/B kit. It is a toggle in production, a targeting rule that may or may not be a decision the law treats as automated, and a bill that grows when you add a flag, or an event, or a service connection, or a seat — not when you add “feature management.” The Google query treats ConfigCat, Statsig, LaunchDarkly, and Unleash as rivals. They are not. One meters how many flags you named. One gives you unlimited flag checks and meters events. One meters connections and client-side MAUs, with two printed MAU dollars that cannot both be the invoice. One meters seats, with a five-seat floor the minute you host it yourself, and an open-source Edge that dies on 31 December 2026. Mix those jobs and you pay twice — once for the plan, and again when a leftover flag is still metering users, or when a targeting rule on a person is a GDPR Article 22 decision you cannot explain.
Key Takeaways
- There is no overall best. Rank by job: cheap flag-count SKU, unlimited checks on an event meter, published connection-plus-MAU PAYG, or a seat with an OSS path.
- The market splits in four. ConfigCat, Statsig, LaunchDarkly, Unleash.
- The sticker is a billing unit. ConfigCat Forever Free: 10 flags; Pro $110/mo billed annually. Statsig Free: unlimited flag checks, 2M events; Pro $150/mo. LaunchDarkly Foundation: $10/SC/mo and $8.33 per 1k MAU billed yearly — the table also prints $10. Unleash PAYG $75/seat/mo; 5-seat minimum self-hosted.
- A targeting rule can be a decision. GDPR Article 22: a person has the right not to be subject to a solely automated decision, including profiling, with legal or similarly significant effects. Article 83(5): up to €20 million or 4% of worldwide annual turnover.
What feature flag software is (and what it is not)
The product is a closed loop: wrap a change → ship dark → target a cohort → roll a percentage → kill it without a deploy. That is not prompt-to-demo. Two jobs share the label: a release toggle (boolean, percentage, kill switch) and an experimentation stack (metric lifts, CUPED, holdouts). ConfigCat meters the flags you named. Statsig meters the events that power lifts. LaunchDarkly sells both on a connection and MAU meter. Unleash sells both on a seat, with Open Source as a one-project, two-environment box. Buy the first for a 50-flag experiment program and you rebuild the stats. Buy the second for a 10-flag kill switch and you pay for events the toggle never needed.
How we ranked
Five checks, not a composite score: job, published price, meter (flag vs event vs connection / MAU vs seat), free-tier floor, real annual cost. Official pages checked 24 August 2026. Annual billed rates first where published.
Quick picks by job
A published flag-count SKU, unlimited seats and MAUs. ConfigCat Forever Free: 10 feature flags, 2 environments, 2 products, 5 million config JSON downloads a month. Pro at $110 per month billed annually lifts you to 100 flags.
Unlimited flag checks, experiments on an event meter. Statsig Developer at $0: 2 million metered events, unlimited flag checks, unlimited seats. Pro at $150/mo includes 5 million events, then $0.05 per 1,000.
Published PAYG, no seat fee, a connection plus a MAU. LaunchDarkly Foundation after a 14-day trial: $10 per service connection per month (5 included) and $8.33 per 1,000 client-side MAU billed yearly. Confirm the $10 on the same page.
A seat, or Open Source with two environments. Unleash PAYG at $75 per seat per month. Self-hosted PAYG has a 5-seat minimum. Open Source: one project, development and production. OSS Edge EOL 31 December 2026.
Comparison: 4 platforms
| Tool | Type | Starting price | Best for | Main trap |
|---|---|---|---|---|
| ConfigCat | Flag-count, unlimited seats/MAU | Forever Free (10 flags); Pro $110/mo billed annually; Smart $325; Enterprise $900 | Cheap published toggles, no MAU or seat meter | Free dies on the 11th flag. Meter is flags and config JSON downloads, not reads |
| Statsig | Unlimited checks, event-metered | Developer Free (2M events); Pro $150/mo (5M then $0.05/1K); Enterprise quote | Flags plus experiments without paying per check | Checks are free. Events are not. Metric Lifts on a partial rollout are metered; at 2M, lifts stop |
| LaunchDarkly | Service connection + client-side MAU | Developer $0 (5 SC, 1K MAU); Foundation PAYG $10/SC/mo and $8.33/1k MAU yearly | Production PAYG with no seat fee | Hero $8.33 yearly vs table $10 per 1K MAU. Python/K8s inflate connections. Change a context key, mint a MAU |
| Unleash | Per-seat, OSS path | PAYG $75/seat/mo; 5-seat minimum self-hosted; OSS free | Seat-metered, or self-host with two environments | Seats, not MAUs. OSS is 1 project / 2 environments. OSS Edge EOL 31 Dec 2026 |
Cheap flag-count SKU: ConfigCat
Right buy when the job is named toggles, unlimited teammates, and a number you can defend at $0 or $110. Wrong buy as the stats engine, and wrong buy if you modeled “unlimited flags” on Forever Free.
Forever Free is $0: 10 feature flags, 2 environments, 2 products, 5 million config JSON downloads / month, unlimited seats, unlimited MAUs, unlimited feature-flag reads. Pro is $110 per month billed annually (the page default): 100 flags, 3 environments, 3 products. Smart is $325: unlimited flags and environments, 10 products. Enterprise is $900.
Trap: The $0 plan is 10 names. The 11th flag is Pro. Reads are unlimited; downloads of the config JSON are not — Free is 5 million a month. A chatty poll is a download, not a “flag read.” Seats and MAUs do not move this invoice.
Unlimited checks, event meter: Statsig
Right buy when the job is flags and metric lifts, unlimited seats, unlimited flag checks. Wrong buy if you assumed $0 covered CUPED on a 5-million-event month.
Developer is Free, no card: 2 million events per month, unlimited flag and config checks, unlimited seats. Pro is $150 per month: 5 million events included, then $0.05 per 1,000.
Trap: Statsig does not charge for flag checks. It charges metered events: exposures when Metric Lifts are on and the gate is a partial rollout, plus log events. Fully shipped (0% or 100%) flags with lifts off do not generate those events. Exceed 2 million on Developer and targeting keeps working; Metric Lift computation stops.
Connection plus MAU, two printed dollars: LaunchDarkly
Right buy when the job is production PAYG, no seat fee, and you will count service connections and client-side MAUs before engineers. Wrong buy if you modeled $0 past 1,000 client-side users, or a Python/K8s fleet on the $10 sticker.
Developer is $0 forever: unlimited seats, unlimited flags, 1 project and 3 environments, 5 service connections and 1,000 client-side MAU. Foundation is 14-day trial, then PAYG: no platform fee, no seat fee. $10 per service connection per month (first 5 included). $8.33 per 1,000 client-side MAU billed yearly. The compare table on the same page lists $10 / mo per 1K MAU. Enterprise is quote.
Trap: Those two MAU sentences cannot both be the invoice. $8.33 is the yearly hero. $10 is the table. A service connection is one server-side SDK in one environment for a month. K8s, serverless, Python, and Ruby do not take the $10 sticker. MAU is unique context keys on client-side, AI, and edge SDKs. Change a context key, mint a MAU. Server-side SDKs use connections, not MAU.
Seat meter, OSS with an Edge clock: Unleash
Right buy when the job is a published seat, Open Source you will run, or an enterprise quote. Wrong buy if you assumed $75 included every engineer as a free viewer, or if OSS Edge is how you evaluate flags past this year.
PAYG is $75 per seat per month, 14-day trial: unlimited client-side MAU, unlimited service connections, 53 million API requests then $5 per million. Self-hosted PAYG has a 5-seat minimum. Open Source is free: one default project, development and production only. Extra environments and extra projects are Enterprise.
Trap: $75 is a login, not a MAU. Five people self-hosting is $375 a month before the first flag. OSS will not give you a third environment. Unleash Edge OSS entered LTS on 12 December 2025 and reaches end-of-life on 31 December 2026. The Open Source server stays. Edge does not. Production on OSS Edge is a migration before New Year’s.
Worked annual cost at published floors
Assumptions: U.S. startup, published stickers. ConfigCat annual default. Statsig Pro at $150 inside the included event band. LaunchDarkly Foundation yearly MAU at $8.33 (table $10 in parentheses). Unleash PAYG seats. No add-ons.
| Situation | ConfigCat | Statsig | LaunchDarkly | Unleash |
|---|---|---|---|---|
| 2 engineers, 8 flags, 400 client MAU, no experiments | $0 (Free) | $0 (Developer) | $0 (Developer) | $0 (OSS) or $1,800 (2 cloud seats) |
| 5 engineers, 40 flags, 10k client MAU, kill switches only | $1,320 (Pro $110 × 12) | $0 under 2M events | ~$1,000 ($8.33 × 10 × 12); $1,200 at $10 | $4,500 ($75 × 5 × 12) |
| 5 engineers, 40 flags, 10k MAU, partial-rollout experiments | $1,320; no lifts | $1,800 (Pro) if events ≤ 5M | Foundation MAU + SC | $4,500 PAYG |
| 20 engineers, 120 flags, 100k client MAU | $3,900 (Smart $325 × 12) | Pro $1,800 + event overage | ~$10,000 ($8.33 × 100 × 12); $12,000 at $10 | $18,000 ($75 × 20 × 12) |
At eight named flags, three of the four floors are $0. That is a meter gap, not a quality gap. At five engineers and 10,000 client-side MAU, ConfigCat Pro is $1,320 and Unleash is $4,500. At 100,000 MAU, LaunchDarkly’s $8.33 vs $10 is $2,000 a year on the same page.
When it breaks
The billing unit is not the job. ConfigCat meters flags (and downloads). Statsig meters events, not checks. LaunchDarkly meters service connections and client-side MAUs. Unleash meters seats. A leftover flag still meters. A usage-based review that compares “$0 vs $75 vs $150” without naming the unit is a fiction. So is a per-seat is dead take that ignores Unleash still selling seats while LaunchDarkly prints “no per-seat pricing” and then bills the SDK.
A free plan is a cliff. ConfigCat: 10 flags. Statsig: 2 million events, then lifts stop. LaunchDarkly Developer: 1,000 client-side MAU, 5 connections, 1 project / 3 environments. Unleash OSS: 1 project, 2 environments. The 11th flag is Pro. The 1,001st client-side user is Foundation.
Two dollars on one page, and Python is not $10. LaunchDarkly Foundation: $8.33 per 1k MAU billed yearly in the hero, $10 in the compare table. ConfigCat’s $110 is the annual default. Kubernetes, serverless, Python, and Ruby do not take the published connection rate. Flagsmith Start-Up is $40/mo yearly or $45 monthly; Free is 50,000 requests and 1 seat. PostHog meters flag requests (1 million free, then from $0.0001). Foundation is the hybrid SKU here: included connections, then MAU.
OSS Edge is on a clock. Unleash docs, 12 December 2025: OSS Edge LTS started that day; EOL 31 December 2026. Migrate to Enterprise Edge or stop using that evaluator. The Open Source server remains.
A flag that decides something about a person is not just a deploy switch. Article 22 GDPR: the right not to be subject to a solely automated decision, including profiling, with legal or similarly significant effects. Recital 71 names e-recruiting and credit. If the flag is that decision, you need a lawful basis, human intervention, and an explanation. Article 83(5): €20 million or 4% of worldwide annual turnover. A SaaS spend cleanup that leaves PII in targeting rules is not a cleanup. Split, Optimizely, Adobe Target: no lasting public dollar. If the RFP needs a printed rate, stay in the four rows above.
A 15-minute way to choose
- Write the job: named kill switches, flags plus metric lifts, production PAYG, or self-host with a seat.
- Under 10 flags, no experiments, unlimited teammates: ConfigCat Free. Leave at 11 (Pro $110 annual). Leave Pro at 101 flags (Smart $325).
- Flags and experiments, unlimited checks: Statsig Developer until 2 million events. Pro at $150 the minute lifts matter past the cliff.
- Client-side MAU you can count, no seat fee: LaunchDarkly Developer to 1,000 MAU and 5 connections. Foundation after that. Price MAU at $8.33 and at $10. Python/K8s: get a quote.
- Seat-metered, or OSS with two environments: Unleash OSS for one project. PAYG at $75 a seat; budget five seats if you self-host. OSS Edge: 31 December 2026.
- The flag changes a person’s legal or similarly significant outcome: Article 22 first, vendor second. Fail the meter, change lanes.
Frequently Asked Questions
What is the best feature flag software in 2026?
There is not one. ConfigCat Free for 10 named flags (Pro at $110 billed annually). Statsig Developer until the 2-million-event cliff; Pro at $150 when lifts are the product. LaunchDarkly Developer to 1,000 client-side MAU and 5 connections; Foundation PAYG after, with the $8.33 vs $10 MAU check. Unleash PAYG at $75 a seat, or Open Source with one project and two environments.
LaunchDarkly vs Unleash: which one?
LaunchDarkly if the object is PAYG with no seat fee and you will count connections and client-side MAUs. Unleash if the object is a $75 seat, change requests, or Open Source you will run. Self-host PAYG starts at five seats. Developer starts at five connections and 1,000 MAU. Neither is Lovable.
Is there a good free feature flag plan?
ConfigCat Forever Free: 10 flags, unlimited seats and MAUs. Statsig Developer: unlimited flag checks, 2 million events. LaunchDarkly Developer: unlimited flags, 1,000 client-side MAU, 5 connections. Unleash Open Source: one project, two environments. A hardcoded if (user.id) is not this product.
Methodology
We compared 4 platforms on job, published price, billing unit (flag vs event vs service connection / MAU vs seat), free-tier floor, and annual cost. Official pages checked on 24 August 2026: ConfigCat Free (10 flags, 5M config JSON downloads, unlimited seats/MAU/reads) / Pro $110/mo billed annually / Smart $325 / Enterprise $900. Statsig Developer Free (2M events, unlimited flag checks) / Pro $150 (5M then $0.05/1K); Metric Lifts on partial rollouts are metered; 2M cliff stops lifts not targeting. LaunchDarkly Developer $0 (5 SC, 1K MAU) / Foundation $10/SC/mo and $8.33/1k MAU yearly vs $10/1k on the table; K8s/Python custom. Unleash PAYG $75/seat/mo, 5-seat self-host minimum; OSS 1 project / 2 environments; OSS Edge EOL 31 Dec 2026. Flagsmith and PostHog as request-metered asides. Split, Optimizely: no lasting printed dollar. Primary sources: Regulation (EU) 2016/679 Articles 22 and 83(5); Unleash v7.4.0 release notes, 12 December 2025. No bake-off. Not legal advice.
