Oaklight/llm-rosetta

LLM-Rosetta

English Version | 中文版

LLM-Rosetta — A Python library for converting between different LLM provider API formats using a hub-and-spoke architecture with a central IR (Intermediate Representation).

Full Documentation

Full documentation is available at:

• English: https://llm-rosetta.readthedocs.io/en/latest/
• 中文: https://llm-rosetta.readthedocs.io/zh-cn/latest/

The Problem

When building applications that work with multiple LLM providers, you face an N² conversion problem — every provider pair requires its own conversion logic. LLM-Rosetta solves this with a hub-and-spoke approach: each provider only needs a single converter to/from the shared IR format.

Provider A ──→ IR ──→ Provider B
Provider C ──→ IR ──→ Provider D
         ... and so on

Supported Providers

| Provider | API Standard | Request | Response | Streaming | |----------|-------------|:-------:|:--------:|:---------:| | OpenAI | Chat Completions | ✅ | ✅ | ✅ | | OpenAI | Responses API | ✅ | ✅ | ✅ | | Anthropic | Messages API | ✅ | ✅ | ✅ | | Google | GenAI API | ✅