OpenRouter completed $40 million Series A Round funding
Sector:
Software Infra
AI
06/25/2025
New York, NY USA
OpenRouter
completed $40 million Series A Round funding. Investors include
Menlo Ventures (lead), Andreessen Horowitz (lead), Sequoia Capital.
“Inference is the fastest-growing cost for forward-looking companies, and it’s often coming from 4 or more different models. The sophisticated companies have run into these problems already, and built some sort of in-house gateway. But they’re realizing that making LLM’s “just work” isn’t an easy problem. They’re ripping out home-grown solutions and bringing in OpenRouter so they can focus on their domain-specific problems, and not on LLM integration,” said Alex Atallah, co-founder and CEO of OpenRouter. “This round lets us keep shipping at the speed developers expect while delivering the uptime, privacy, and IT guarantees that enterprises demand.”
About
Founded in 2023 by Alex Atallah and Louis Vichy, OpenRouter provides a single, standards-compatible API that lets developers and enterprises tap into 400+ LLMs from OpenAI, Anthropic, Google, Mistral and more—without rewriting code or renegotiating contracts. OpenRouter’s rankings and LLM leaderboards are available publicly and are a key source of industry data and trends. With edge-global infrastructure, privacy-first design, real-time accounting, and unified billing, OpenRouter is the emerging standard for AI inference at scale.
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