Go-OpenAI is the de facto OpenAI API client library for the Go programming language. It wraps chat completions, embeddings, image generation, audio transcription and the rest of the OpenAI platform in idiomatic Go — with zero external dependencies. The library has earned about 10,800 stars on GitHub and is maintained in step with new model releases in 2026.
If you are building AI features in Go, this library saves you from hand-writing HTTP calls and JSON schemas for every endpoint. It covers the full API surface: GPT chat and completions with streaming, function and tool calling, GPT-Image generation and editing, Whisper transcription and translation, embeddings, moderation, assistants, fine-tuning and file management. Because it depends only on the standard library, it drops cleanly into any module without dependency conflicts, and its request/response types are generated to mirror the official API closely. The same client also works with OpenAI-compatible endpoints, so switching between OpenAI, Azure OpenAI and local servers usually means changing a base URL and key. The project is community-maintained and famously responsive to API changes: new endpoints and model parameters typically land within days of OpenAI announcing them. Usage examples live in the repository, and the module follows predictable versioning so upgrades in long-lived Go services stay uneventful. Because Go backends often run for years without major rewrites, the zero-dependency design is a deliberate feature — there is no transitive dependency tree to audit or to break between releases.
Go-OpenAI is free and open source under the Apache 2.0 license. You only pay OpenAI (or your chosen provider) for the API usage itself.
Go-OpenAI is for Go developers adding LLM features to backends, CLIs and services who want a mature, dependency-free client instead of maintaining their own API wrapper.