opencodex is a local proxy that enables the use of various Large Language Models with OpenAI Codex CLI, App, SDK, and Claude Code.
Why it matters
overview
opencodex is an AI proxy tool developed by the community that enables developers, AI agents, and scripting users to run OpenAI Codex and Claude Code with any Large Language Model (LLM) via a universal local proxy. It translates wire formats between Codex/Claude Code and over 40 LLM providers, including Claude, Gemini, Grok, DeepSeek, and Ollama, without requiring client patches.
features
opencodex provides a comprehensive set of features designed to enhance the flexibility and compatibility of AI coding agents with a wide array of LLMs. Its core functionality revolves around acting as a universal proxy, translating API calls and responses to ensure seamless operation across different providers.
gpt-5.4-mini.use cases
opencodex is primarily designed for developers, AI agents, and scripting users who require greater flexibility and control over the Large Language Models used with their AI coding environments. Its capabilities cater to specific technical needs within the AI development workflow.
how to use
opencodex operates as a local proxy, installed via npm, that intercepts and translates API requests. Users configure the proxy to route requests from AI coding agents to their chosen LLM providers.
npm install -g @bitkyc08/opencodex.x-opencodex-api-key in client requests.pricing
opencodex operates on a freemium model. The core proxy software is open-source and free to install and use. Users are responsible for the costs associated with the API keys of the underlying Large Language Models (LLMs) they choose to integrate and utilize through the proxy.
Similar Tools
opencodex distinguishes itself in the AI tool landscape by functioning as a universal local proxy, rather than a direct AI coding agent. It enhances existing tools by providing LLM agnosticism, a niche that differentiates it from broader AI gateways or specific coding assistants.
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