LLM-Rosetta: A Hub-and-Spoke Intermediate Representation for Cross-Provider LLM API Translation — HN submission

Mon, 20 Apr 2026 07:05:33 GMT

Show HN: LLM-Rosetta - Translate LLM API Calls Across OpenAI, Anthropic, Gemini

I built this after getting tired of maintaining one-off adapters between OpenAI, Anthropic, and Gemini APIs in the same project. The idea is to translate through a shared intermediate representation instead of writing every provider pair separately. So instead of OpenAI->Anthropic, OpenAI->Gemini, Anthropic->Gemini, etc., each provider just maps to/from the IR. This is not a unified client like LiteLLM. It's a translator/proxy: give it an OpenAI-style request and it can produce the Anthropic/Gemini equivalent, including streaming, tool calls, and multimodal inputs. It's open source, and…

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LLM-Rosetta: A Hub-and-Spoke Intermediate Representation for Cross-Provider LLM API Translation · HackerPapers discussions

LLM-Rosetta: A Hub-and-Spoke Intermediate Representation for Cross-Provider LLM API Translation — HN submission