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OpenRouter Raises $40M for AI Platform

OpenRouter Raises $40M for AI Platform

Source: theblock.co6/27/2025

OpenRouter, spearheaded by ex-OpenSea co-founder Alex Atallah, has successfully raised $40 million in seed and Series A funding to further the development of its large language models (LLMs) aggregator platform. The funding was spearheaded by Andreessen Horowitz and Menlo Ventures, with involvement from Sequoia and industry leaders. Valued at $500 million, OpenRouter offers a marketplace and routing platform for LLMs that optimizes model selection based on criteria like cost and accuracy. Developers utilize credits for model inferences, while OpenRouter facilitates efficient model integration. With over a million developers already using its API, OpenRouter partners with AI giants to provide early access to advanced models, establishing itself as a pivotal player in AI infrastructure.

FAQ

  • What is OpenRouter?

    OpenRouter is an AI infrastructure startup that acts as a marketplace and routing platform for large language models (LLMs).

  • Who led the funding round for OpenRouter?

    The funding round was led by Andreessen Horowitz and Menlo Ventures, with participation from Sequoia and other industry leaders.

  • What is the main goal of OpenRouter?

    OpenRouter aims to simplify model selection and optimization in the crowded AI landscape by providing access to various LLMs through one platform.