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OpenRouter

American artificial intelligence model routing platform

Wikipedia contributorsAdapted for Fathomly · View authors
1 min read
Source updated September 12, 2026
Image credit is listed at the end of this article.

OpenRouter is an American artificial intelligence company that operates a platform for accessing and routing requests to large language models and other generative artificial intelligence models. The platform provides a unified application programming interface (API) through which developers can access models from multiple developers and inference providers.

In August 2026 Bloomberg and The Wall Street Journal reported that Stripe, Inc. had finalized a deal to acquire OpenRouter for more than $7 billion.

01History

OpenRouter was founded in 2023 by Alex Atallah and Louis Vichy and is based in New York City. In 2025, the company raised $12.5 million in a seed round led by Andreessen Horowitz, followed by a $28 million Series A round led by Menlo Ventures. In May 2026, it raised $113 million in a Series B round led by CapitalG, valuing the company at approximately $1.3 billion.

Top 20 OpenRouter LLMs
Top 20 OpenRouter LLMs

02Platform

Developers can select individual models or route requests between models based on factors including price and performance. The platform provides access to more than 400 models, including models developed by OpenAI, Anthropic, and Meta.

Compatible AI coding software

OpenRouter can be used as a model provider or inference backend for a number of AI-assisted software development tools, notable examples include:

Supported models

OpenRouter provides access to hundreds of artificial intelligence models, including large language models and models for image generation, video generation, speech synthesis, transcription, embeddings, reranking, and audio generation. Notable models and model families available through the service include:

Text

Image

Video

Speech

Transcription

Embeddings

Reranking

Watch videos about OpenRouterExplainers and documentaries on YouTube (opens in a new tab)

Sources and credits

This article is adapted from the Wikipedia article “OpenRouter”, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.

Images, from Wikimedia Commons:

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