LaunchDarkly
- Free allowance
- Developer: USD 0 a month forever, no credit card; unlimited feature flags and seats, 5 service connections and 1K client-side MAU a month, 100K experimentation MAU, 10M logs and 10M traces, 5K session replays and 5K errors, 5K AI runs a month; 1 project and 3 environments
- Verdict
- caveatusable, with a named limit or an unprobed read path
- Cost
- free tier
- Identity
- emailno card, phone unknown
- Binding limit
- volume-quota5 service connections and 1K client-side MAU a month; 10M logs and 10M traces a month; 5K session replays and 5K errors a month; 5K AI runs a month
- Evidence
- documented37 sources; a first-party page was read and the sentence quoted
- Freshness
- stale on 2026-12-03checked 2026-11-02 (live); stale on 2026-12-03
| Free tier | Developer: USD 0 a month forever, no credit card; unlimited feature flags and seats, 5 service connections and 1K client-side MAU a month, 100K experimentation MAU, 10M logs and 10M traces, 5K session replays and 5K errors, 5K AI runs a month; 1 project and 3 environments unit mixed; metered on ; The allowance is counted in service connections (one server-side SDK connected to one environment for a month), client-side MAU (each unique client-side user or device), log lines, trace spans, session replays, errors and AI runs; no single unit term fits. Sign-up starts a 14-day trial with Enterprise features that converts to Developer. When usage keeps exceeding the Developer entitlements the plan converts to read-only mode. |
|---|---|
| Price | none stated |
| Limits |
1 project and 3 environments on Developer. REST API rate limits are not published; LaunchDarkly returns them in response headers. |
| Binding | volume-quota Each server-side SDK in each environment uses one of the 5 service connections a month, so server-side use meets that count first; client-side apps meet 1K MAU. Continued excess turns the plan read-only. |
| Identity | email The sign-up form asks for first name, last name, email and password, or a GitHub sign-in, and states no credit card is required; it starts a 14-day trial that continues on the free Developer plan. The GitHub route shows a Complete profile screen for First name, Last name, Work email and Organization, then sends an email to verify the account. Whether a later step asks for a phone number is unverified: behind a sign-up. |
| Egress | not applicable: flag evaluations reach the SDKs over routes that are never rate limited; no traffic allowance is published |
| Per-object cap | unverified: no flag or payload size limit is stated on the pages read |
| Retention | Logs, traces, session replays and errors are stored one month; AgentControl run and eval data stays 14 days |
| Interface | rest REST API at https://app.launchdarkly.com/api/v2 with personal or service access tokens (a GET /api/v2/projects without a token answered 401); SDK keys, mobile keys and client-side IDs cannot call the REST API; an OpenAPI specification is published. endpoint: https://app.launchdarkly.com/api/v2 |
| Tooling | 30 SDKs (13 client-side, 13 server-side, 4 edge), the Relay Proxy, or any HTTP client against the REST API with an access token. |
| Composes with | Feature flags for a few server-side services on free compute, with client-side flags for up to 1K MAU a month. |
| Reliability | Usage above the Developer entitlements is warned and then turns the plan read-only; Developer support is the Discord community. |
| Notes | Foundation is pay as you go after a 14-day trial: USD 10 per service connection a month and USD 8.33 per 1K client-side MAU a month billed yearly. |
| Evidence note | documented Every value is quoted from the first-party pricing page, plan and billing docs, REST API overview and sign-up page; the REST API host was probed and answered 401 without a token. A flag evaluation through an SDK key on a Developer account would move it to measured. |
| Parsed numbers |
|
Evidence 37
| date | source | what it proved |
|---|---|---|
| 2026-10-30 | launchdarkly.com/pricing/ | Developer needs no credit card |
| 2026-10-30 | launchdarkly.com/pricing/ | Developer is USD 0 a month forever |
| 2026-10-30 | launchdarkly.com/pricing/ | Developer includes 5 service connections and 1K client-side MAU a month |
| 2026-10-30 | launchdarkly.com/pricing/ | what a service connection and an MAU are |
| 2026-10-30 | launchdarkly.com/pricing/ | Developer includes 100K experimentation MAU a month |
| 2026-10-30 | launchdarkly.com/pricing/ | Developer includes 10M logs and 10M traces a month |
| 2026-10-30 | launchdarkly.com/pricing/ | logs and traces are stored one month |
| 2026-10-30 | launchdarkly.com/pricing/ | Developer includes 5K session replays and 5K errors a month |
| 2026-10-30 | launchdarkly.com/pricing/ | session replays and errors are stored one month |
| 2026-10-30 | launchdarkly.com/pricing/ | Developer includes 5K AI runs a month |
| 2026-10-30 | launchdarkly.com/pricing/ | AgentControl data retention is 14 days on Developer |
| 2026-10-30 | launchdarkly.com/pricing/ | the 14 days apply to AgentControl run and eval data |
| 2026-10-30 | launchdarkly.com/pricing/ | Developer has unlimited feature flags |
| 2026-10-30 | launchdarkly.com/pricing/ | Developer has unlimited seats |
| 2026-10-30 | launchdarkly.com/pricing/ | 30 SDKs are available |
| 2026-10-30 | launchdarkly.com/pricing/ | the SDKs split into 13 client-side, 13 server-side and 4 edge |
| 2026-10-30 | launchdarkly.com/pricing/ | Foundation is a 14-day trial then pay as you go |
| 2026-10-30 | launchdarkly.com/pricing/ | Foundation charges USD 10 per service connection a month |
| 2026-10-30 | launchdarkly.com/pricing/ | Foundation charges USD 8.33 per 1K client-side MAU a month billed yearly |
| 2026-10-30 | launchdarkly.com/pricing/ | part of the text of Reliability, above |
| 2026-10-30 | launchdarkly.com/pricing/ | Developer has 1 project and 3 environments |
| 2026-10-30 | launchdarkly.com/docs/home/account/plans | Developer plans are free and need no credit card |
| 2026-10-30 | launchdarkly.com/docs/home/account/plans | a Relay Proxy exists |
| 2026-10-30 | launchdarkly.com/docs/home/account/calculating-billing.md | part of the text of Binding, above |
| 2026-10-31 | launchdarkly.com/docs/api.md | the REST API takes personal or service access tokens |
| 2026-10-31 | launchdarkly.com/docs/api.md | SDK keys cannot call the REST API |
| 2026-10-31 | launchdarkly.com/docs/api.md | the REST API is served under app.launchdarkly.com/api/v2 with an OpenAPI spec |
| 2026-10-31 | launchdarkly.com/docs/api.md | part of the text of Limits, above |
| 2026-10-31 | launchdarkly.com/docs/api.md | SDK routes are never rate limited |
| 2026-10-31 | app.launchdarkly.com/signup | sign-up starts a 14-day trial then Developer, no card |
| 2026-10-31 | app.launchdarkly.com/signup | the sign-up offers GitHub |
| 2026-10-31 | app.launchdarkly.com/signup | the sign-up asks for first name, last name, email and password |
| 2026-10-31 | probe: https://app.launchdarkly.com/api/v2/projects | app.launchdarkly.com/api/v2/projects answers 401 without a token |
| 2026-11-01 | launchdarkly.com/docs/home/account/oauth-github | the GitHub sign-up route shows a Complete profile screen that takes a first and a last name |
| 2026-11-01 | launchdarkly.com/docs/home/account/oauth-github | the Complete profile screen asks for an Organization |
| 2026-11-01 | launchdarkly.com/docs/home/account/oauth-github | the GitHub route ends with an email to verify the account |
| 2026-11-01 | app.launchdarkly.com/signup | the sign-up form asks for first name, last name, email and password |