OpenAI
Open source activity
As of Oct 28, 2026
OpenAI's public repositories show the same pattern most API-first companies settle into: a full matrix of official client SDKs — Python, Node, Java, Go, Ruby — all getting routine upkeep in parallel. The Python SDK alone carries nearly 32,000 stars, a reasonable proxy for how much of the ecosystem is built directly on top of it.
The more interesting recent activity sits around Codex, OpenAI's terminal-based coding agent, which has become one of the company's largest open-source properties by star count (over 131,000). A newly active companion repo, codex-security, extends that into a dedicated CLI and TypeScript SDK for finding, validating, and fixing security vulnerabilities — suggesting OpenAI is building out Codex as a platform with specialized tooling layers rather than a single monolithic agent.
Most active repositories
| Repository | Description | Language | Stars | Last pushed |
|---|---|---|---|---|
| openai/openai-python | The official Python library for the OpenAI API | Python | 31,995 | Oct 29, 2026 |
| openai/codex | Lightweight coding agent that runs in your terminal | Rust | 131,533 | Oct 29, 2026 |
| openai/openai-cli | Official CLI for the OpenAI API | Go | 1,140 | Oct 29, 2026 |
| openai/codex-security | OpenAI's Codex Security CLI and TypeScript SDK for finding, validating, and fixing security vulnerabilities. npm: https://www.npmjs.com/package/@openai/codex-security | TypeScript | 11,252 | Oct 29, 2026 |
| openai/openai-dotnet | The official .NET library for the OpenAI API | C# | 2,717 | Oct 29, 2026 |
| openai/openai-java | The official Java library for the OpenAI API | Kotlin | 1,559 | Oct 29, 2026 |
| openai/openai-ruby | Official Ruby SDK for the OpenAI API | Ruby | 472 | Oct 29, 2026 |
| openai/openai-go | The official Go library for the OpenAI API | Go | 3,514 | Oct 29, 2026 |
| openai/openai-node | Official JavaScript / TypeScript library for the OpenAI API | TypeScript | 11,242 | Oct 29, 2026 |
| openai/openai-cookbook | Examples and guides for using the OpenAI API | Jupyter Notebook | 76,866 | Oct 29, 2026 |
| openai/terraform-provider-openai | The official Terraform provider for OpenAI. | Go | 41 | Oct 29, 2026 |
| openai/openai-openapi | OpenAPI specification for the OpenAI API | — | 2,561 | Oct 29, 2026 |
| openai/homebrew-tools | Homebrew for the OpenAI CLI. | Ruby | 28 | Oct 29, 2026 |
| openai/openai-agents-js | A lightweight, powerful framework for multi-agent workflows and voice agents | TypeScript | 3,954 | Oct 29, 2026 |
| openai/snap-o | Lightweight Android capture developer tools for macOS | Swift | 118 | Oct 28, 2026 |
| openai/skills | Skills Catalog for Codex | Python | 28,387 | Oct 28, 2026 |
| openai/community-plugins | — | JavaScript | 17 | Oct 27, 2026 |
| openai/openai-agents-python | A lightweight, powerful framework for multi-agent workflows | Python | 30,373 | Oct 27, 2026 |
| openai/tunnel-client | Customer-run client for Secure MCP Tunnel: connect private or localhost MCP servers to ChatGPT, Codex, the Responses API, and AgentKit without exposing them to the public internet. | Go | 603 | Oct 27, 2026 |
| openai/softnet | Software networking with isolation for Tart | Rust | 99 | Oct 27, 2026 |