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SDK Compatibility Matrix

This topic describes the latest versions of the Optimizely SDKs and their available features.

Optimizely follows the Semantic Versioning standard when upgrading and releasing our SDKs and Clients. We are always working on adding support for new SDKs and touchpoints, and we frequently enhance our existing SDKs to make them as idiomatic, performant and easy to use as possible.

As a result, the minimum version support for some applications and SDK features may vary. The following tables list cases where version support for features differs. For a complete version history of any given SDK, the changelogs on their GitHub repositories remain the source of truth.

Client-side SDKs

Feature *AndroidiOS (Swift)FlutterJavaScriptReactFeature ReleaseDocumentation
Forced Decision methods3.13+3.10+1.0.0-beta4.9+2.8+Jan 2022See the Forced Decision method topic for your language. For example, Java
OptimizelyConfig V23.11+3.9+1.0.0-beta4.7+2.7+Sep 2021See the topic for your language. For example, OptimizelyConfig
Decide, Create User Context and Track Event methods3.9+3.7+1.0.0-beta4.5+2.5+Feb 2021See the Migrate from older versions topic for your language. For example, React
Numerical Audience >= and <=3.7+3.5+1.0.0-beta4.3+2.4+Oct 2020Target audiences
Version Audience Targeting3.7+3.5+1.0.0-beta4.3+2.4+Oct 2020Target audiences
Datafile AccessorN/AN/A1.0.0-beta3.7+2.3+Oct 2020See the topic for your language, for example, OptimizelyConfig
JSON Feature Variables3.6+3.4+1.0.0-beta4.1+2.1+Jul 2020Create feature variables
Targeted Rollouts (per-audience config)2.0+3.3.2+1.0.0-beta2.0+1.0+Jun 2020See Migrate from older versions topic for your language, for example, Android
React HooksN/AN/AN/AN/A2.0+May 2020Introduction to rollouts
OptimizelyConfig API3.4+3.2+1.0.0-beta3.4+1.1+Feb 2020See the OptimizelyConfig topic for your language. For example, OptimizelyConfig
Automatic Datafile Management1.0+3.1+1.0.0-beta3.2+1.0+Jun 2019Datafile management FAQ
Easy Event Tracking3.0+3.1+1.0.0-beta3.0+1.0+Feb 2019Introducing easy event tracking
Numerical Audience Targeting3.0+3.1+1.0.0-beta3.0+1.0+Feb 2019Target audiences
Datafile Caching1.0+3.1+1.0.0-betaN/A2.2+ (React Native)Jul 2020See Initialize SDK topic for your language. For example, Initialize SDK
Offline Event Persistence1.0+3.1+1.0.0-betaN/A2.2+ (React Native)Jul 2020See the Event Dispatcher topic for your language. For example, Configure event dispatcher

*This compatibility matrix captures only noteworthy features released in April 2018 and later. See the changelog for your SDK in GitHub for features released before April 2018 and minor feature releases.

Server-side SDKs

Feature *AgentC#GOJavaJavaScript (Node)PHPPythonRubyFeature ReleasedDocumentation
Forced Decision methods2.6+3.11+1.8+3.10+4.9+3.9+4.0+3.10+Jan 2022See the Forced Decision method topic for your language. For example, Java
OptimizelyConfigV22.5+3.10+1.7+3.9+4.7+3.8+3.10+3.9+Sep 2021See the topic for your language. For example, OptimizelyConfig
Decide, Create User Context, & Track Event methods2.4+3.8+1.6+3.8+4.5+3.7+3.8+3.8+Feb 2021See the Migrate from older versions topic for your language. For example, Python
Numerical Audience >= and <=2.1+3.6+1.4+3.6+4.3+3.5+3.6+3.6+Oct 2020Target audiences
Version Audience Targeting2.1+3.6+1.4+3.6+4.3+3.5+3.6+3.6+Oct 2020Target audiences
Datafile AccessorN/A3.6+1.4+3.6+4.3+3.5+3.6+3.6+Oct 2020See the OptimizelyConfig topic for your language. For example, OptimizelyConfig
JSON Feature Variables1.3+3.5+1.3+3.5+4.1+3.4+3.5+3.5+Jul 2020Create feature variables
Targeted Rollouts (per-audience config)1.1+2.0+1.2+2.0+2.0+2.0+2.0+2.0+Jun 2020Introduction to rollouts
OptimizelyConfig API1.0+3.4+1.0+3.4+3.4+3.3+3.4+3.4+Feb 2020See the OptimizelyConfig topic for your language. For example, OptimizelyConfig
Automatic Datafile Management1.0+3.2+1.0+3.2+3.2+3.2+3.2+3.2+Jun 2019See Initialize SDK topic for your language. For example, Initialize SDK
Easy Event Tracking1.0+3.0+1.0+3.0+3.0+3.0+3.0+3.0+Feb 2019Introducing easy event tracking
Numerical Audience Targeting1.0+3.0+1.0+3.0+3.0+3.0+3.0+3.0+Feb 2019Target audiences

*This compatibility matrix captures only noteworthy features released in April 2018 and later. See the changelog for your SDK in GitHub for features released before April 2018 and minor feature releases.

Current SDK versions

SDKCurrent releaseReleased
Agent2.7.0April 2022
Android3.13.2April 2022
C#3.11.1July 2022
Flutter1.0.0-betaNovember 2022
Go1.8.2September 2022
Java3.10.2March 2022
Javascript (Browser), Javascript (Node)4.9.2June 2022
Objective C3.1.5October 2020
PHP3.9.2October 2022
Python4.1.0July 2022
React, React Native2.9.1July 2022
Ruby4.0.0August 2022
Swift3.10.1April 2022