# posthog
## 2.4.0 — 2026-02-16
### Minor changes
- [0f1f78e](https://github.com/posthog/posthog-elixir/commit/0f1f78e120a4a2ac6d8d0a25ae233a62082e1d17) This is *technically* a breaking change because we're now always sending data gzip compressed and people might not want that, but this will not break anyone's code so we'll release it as a minor knowing that it's an improvement. It's always been possible to swap the client off, but we weren't documenting how to do that exactly - this is now solved too. — Thanks @rafaeelaudibert!
## 2.3.0 — 2026-02-12
### Minor changes
- [ba2f10a](https://github.com/posthog/posthog-elixir/commit/ba2f10ab54a52455007f39f021cd49d39fd3b580) Implement proper retry behavior for requests. Also respects X-Retry-Later header. — Thanks @rafaeelaudibert!
- [39a304d](https://github.com/posthog/posthog-elixir/commit/39a304d9177b7d2f3b0d2e0d48c45e9bd81e65ac) We've now added a new `get_feature_flag_result` method that can be used to get a full view of your feature flags including the payload rather than simply a boolean/string from the enabled/variant state. — Thanks @rafaeelaudibert!
- [1dc5271](https://github.com/posthog/posthog-elixir/commit/1dc5271bd4e2793628a82071913bdefb9070416e) Add support for Anthropic messages in the LLM analytis module — Thanks @rafaeelaudibert!
## 2.2.0 — 2026-02-05
### Minor changes
- [4069a8e](https://github.com/posthog/posthog-elixir/commit/4069a8e1923b43d1857e1232d3138c992d3f592a) Add LLM Analytics
This release introduces a lightweight LLM analytics toolkit for instrumenting, recording, and analyzing large language model usage across applications that use this repository's SDK. It provides practical observability for teams running LLMs in production and during development. — Thanks @martosaur!
- [5fec2fd](https://github.com/posthog/posthog-elixir/commit/5fec2fd8d60eba21c529cd8c4e0e0f8abc795e0f) Add `uuid` to events on every request to guarantee idempotency in the backend — Thanks @rafaeelaudibert!
- [927c1b4](https://github.com/posthog/posthog-elixir/commit/927c1b41e70ac6677f06525413da23393d34bf5a) New release process via [sampo](https://github.com/bruits/sampo) — Thanks @rafaeelaudibert!
## 2.1.0 - 2025-11-25
- included evaluated_at properties in $feature_flag_called events `7c7ee1e978164809aa28162824f273f6f2bd33f2`
## 2.0.0 - 2025-09-30
### Major Release
`posthog-elixir` was fully reworked. Check [migration guide](MIGRATION.md#v1-v2)
for some tips on how to upgrade.
Huge thanks to community member [@martosaur](https://github.com/martosaur) for contributing this new version.
### What's new
- Elixir v1.17+ required
- Event capture is now offloaded to background workers with automatic batching
- [Context](README.md#context) mechanism for easier property propagation
- [Error Tracking](README.md#error-tracking) support
- New `PostHog.FeatureFlags` module for working with feature flags
- [Test mode](`PostHog.Test`) for easier testing
- Customizable [HTTP client](`PostHog.API.Client`) with Req as the default
- [Plug integration](`PostHog.Integrations.Plug`) for automatically capturing common HTTP properties
## 1.1.0 - 2025-07-01
- Expose `capture/2` `b077aba849126c63f1c7a82b6ad9d21945871a4a`
## 1.0.3 - 2025-06-02
- Fix implementation for structs `2cdc6f578a192fd751ce105018a7f78b7ed8f852`
## 1.0.2 - 2025-04-17
- More small changes to docs `147795c21a58e2308fbd43b571d9ba978c8a8a3b`
## 1.0.1 - 2025-04-17
- Small changes to docs `f3578a7006fb8d6cb19f36e19b1387243a12bd21`
## 1.0.0 - 2025-04-17
### Big Release
`posthog-elixir` is now officially stable and running on v1. There are some breaking changes and some general improvements. Check [MIGRATION.md](./MIGRATION.md#v0-v1) for a guide on how to migrate.
### What's changed
- Elixir v1.14+ is now a requirement
- Feature Flags now return a key called `payload` rather than `value` to better align with the other SDKs
- PostHog now requires you to initialize `Posthog.Application` alongside your supervisor tree. This is required because of our `Cachex` system to properly track your FF usage.
- We'll also include local evaluation in the near term, which will also require a GenServer, therefore, requiring us to use a Supervisor.
- Added `enabled_capture` configuration option to disable PostHog tracking in development/test environments
- `PostHog.capture` now requires `distinct_id` as a required second argument
## 0.4.4 - 2025-04-14
Fix inconsistent docs for properties - [#13]
## 0.4.3 - 2025-04-14
Improve docs setup - [#12]
## 0.4.2 - 2025-03-27
Allow `atom()` property keys - [#11]
## 0.4.1 - 2025-03-12
Fix feature flags broken implementation - [#10]
## 0.4.0 - 2025-02-11
Documentation + OTP/Elixir version bumps
## 0.3.0 - 2025-01-09
- Initial feature flags implementation (#7)
## 0.2.0 - 2024-05-04
- Allow extra headers (#3)
## 0.1.0 - 2020-06-06
- Initial release
