# OpenRouter

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/openrouter

- Industry: Software
- Headquarters: New York, US
- Website: www.openrouter.ai/
- Total disclosed funding: $265M
- Latest round: Series B (Oct 17, 2026)
- Investors on record: 20

## About

Based in New York, United States, founded in 2023, OpenRouter, Inc. specializes in providing developers and enterprises with access to a wide range of large language models and AI capabilities through a single, unified interface. The company was co-founded by CEO Alex Atallah, Chris Clark and Louis Vichy. In August 2026, Stripe, Inc., a portfolio company of Capital Group Private Markets,Kleiner Perkins,Redpoint Ventures,Silver Lake,General Catalyst Partners,Alven,Founders Fund,Khosla Ventures,Fidelity Investments,Tiger Global Management,GV,Andreessen Horowitz,Greenoaks Capital,Coatue Management,SV Angel,Lowercase Capital,DST Global,Thrive Capital,SquareOne,American Express Ventures,Designer Fund,Playfair Capital,Square Peg,Moment Ventures,CapitalG,DFJ Growth,BDT & MSD Partners,Allianz X,Baillie Gifford,Sequoia Heritage,and Robinhood Ventures, agreed to acquire OpenRouter, Inc. from Sequoia, Andreessen Horowitz, Menlo Ventures, Soma Capital Management, Transpose Platform Management, CapitalG, ServiceNow Ventures, Pace Capital, Snowflake Ventures, Databricks Ventures, MongoDB Ventures, NVentures, and AMP PBC for USD 7 billion.
OpenRouter provides a unified interface for accessing a variety of large language models (LLMs) and AI capabilities. The platform allows users to create an account to manage organization-specific settings and utilize credits across different models and providers, ensuring flexibility in application development. Key functionalities include an API key for making requests, compatibility with OpenAI's SDK, and a robust infrastructure that guarantees reliable access to AI models. OpenRouter's offerings cater to a diverse clientele, including businesses and developers seeking to integrate AI into their products or workflows. The services are available globally, with a significant user base spanning over 2.5 million individuals, and more than 400 AI models accessible from various providers.
OpenRouter's revenue model is primarily based on consumption of its API services, where clients can manage usage through credits applied to different models and providers. The platform enables direct transactions between the company and its users, catering to both business-to-business (B2B) and direct-to-consumer markets. Clients are charged based on their token usage, allowing for scalable pricing that aligns with client needs. Revenue generation is bolstered by partnerships with over 60 active providers, which enhance the platform's offerings and appeal. The ability to track model uptime and manage settings through an API further solidifies client relationships, fostering a reliable transaction structure within the AI service ecosystem.
In August 2026,The acquisition enables OpenRouter to leverage Stripe’s global infrastructure and resources to scale its AI model routing platform. It also allows OpenRouter to continue operating its marketplace while benefiting from Stripe’s capabilities in payments, billing, and AI-related commerce infrastructure

## Funding rounds

- Series B, Oct 17, 2026, $113M — CapitalG, Alphabet, Databricks, Menlo Ventures, MongoDB, Sequoia Capital, ServiceNow, Snowflake, Andreessen Horowitz
- Series B, Mar 26, 2026, $113M — Menlo Ventures, Sequoia, Andreessen Horowitz, CapitalG, ServiceNow Ventures, Pace Capital, Snowflake Ventures, Databricks Ventures, MongoDB Ventures, NVentures, AMP PBC
- Series A, Apr 1, 2025, $28M — Menlo Ventures, Hong Shan, Andreessen Horowitz, Soma Capital Management, Transpose Platform Management
- Seed, Feb 1, 2025, $11M — Hong Shan, Andreessen Horowitz

## Investors

- Hong Shan — Seed, Series A
- Andreessen Horowitz (https://capitalatlas.ai/funds/andreessen-horowitz) — Seed, Series A, Series B
- Menlo Ventures (https://capitalatlas.ai/funds/menlo-ventures) — Series A, Series B
- Soma Capital Management (https://capitalatlas.ai/funds/soma-capital-management) — Series A
- Transpose Platform Management (https://capitalatlas.ai/funds/transpose-platform-management) — Series A
- Sequoia (https://capitalatlas.ai/funds/sequoia) — Series B
- CapitalG (https://capitalatlas.ai/funds/capitalg) — Series B
- ServiceNow Ventures (https://capitalatlas.ai/funds/servicenow-ventures) — Series B
- Pace Capital (https://capitalatlas.ai/funds/pace-capital) — Series B
- Snowflake Ventures (https://capitalatlas.ai/funds/snowflake-ventures) — Series B
- Databricks Ventures (https://capitalatlas.ai/funds/databricks-ventures) — Series B
- MongoDB Ventures — Series B
- NVentures — Series B
- AMP PBC — Series B
- Alphabet — Series B
- Databricks — Series B
- MongoDB — Series B
- Sequoia Capital — Series B
- ServiceNow — Series B
- Snowflake — Series B