openai4j and OpenAI_SDK

Both tools are competing Java client libraries for the OpenAI API, providing similar functionality for interacting with various OpenAI models.

openai4j

Emerging

OpenAI_SDK

Experimental

Maintenance 2/25

Adoption 10/25

Maturity 16/25

Community 19/25

Maintenance 0/25

Adoption 5/25

Maturity 9/25

Community 7/25

Stars: 403

Forks: 54

Downloads: —

Commits (30d): 0

Language: Java

License: MIT

Stars: 10

Forks: 1

Downloads: —

Commits (30d): 0

Language: Java

License: MIT

Stale 6m No Package No Dependents

About openai4j

Lambdua/openai4j

Java client library for OpenAI API.Full support for all OpenAI API models including Completions, Chat, Edits, Embeddings, Audio, Files, Assistants-v2, Images, Moderations, Batch, and Fine-tuning.

Built on Retrofit and OkHttpClient, the library offers both synchronous and asynchronous streaming APIs, with vision capabilities for image analysis and tool/function calling support. It's structured as modular Maven artifacts—separating POJOs (api module) from service implementations—allowing developers to either use the full OpenAiService or build custom clients with standardized domain objects. The client handles environment variable configuration, connection pooling, and customizable interceptors for retry logic and load balancing.

About OpenAI_SDK

JeffreyYou/OpenAI_SDK

Provides an easy-to-use SDK for Java developers to interact with the APIs of open AI models.

Related comparisons

openai4j and openai-java-sdk openai4j and jvm-openai openai4j and openai-java openai4j and Easy-open-ai openai4j and openai-for-java openai4j and assistant-api-java

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