OpenRouter
About OpenRouter
OpenRouter is a AI Infrastructure startup based in San Francisco, CA that has raised $173M in venture capital across 3 funding rounds since 2023. The company reached Series B stage in 2024 with a $13M round led by Andreessen Horowitz. OpenRouter's investor base includes 5 institutional funds, with CapitalG leading the most recent equity round.
OpenRouter is a unified API platform that routes requests across 400+ AI models from 60+ providers — including OpenAI, Anthropic, Google, and xAI — with intelligent optimization for cost, latency, and performance, processing 25 trillion tokens per week.
OpenRouter Funding Rounds Timeline
3 rounds · $173M raised · since 2023
| Round | Date | Amount | Valuation | Lead investor | Co-investors |
|---|---|---|---|---|---|
| Seed | 2024 | $13M | — | Andreessen Horowitz | Sequoia Capital |
| Series A | Jun 2025 | $48M | — | Menlo Ventures | Sequoia Capital, Andreessen Horowitz |
| Series B | May 2026 | $113M | — | CapitalG | NVentures, Menlo Ventures, Andreessen Horowitz, Sequoia Capital |
Investors in OpenRouter
5 institutional investors across 3 rounds
Lead investors
Co-investors
Recent news about OpenRouter
- FundingLeading OpenRouter's Series BMay 2026
Questions about OpenRouter
How much has OpenRouter raised?
OpenRouter has raised $173M across 3 funding rounds since 2023.
Who are the investors of OpenRouter?
OpenRouter's investors include CapitalG, Menlo Ventures, Andreessen Horowitz, Sequoia Capital, NVentures.
When was OpenRouter's last funding round?
OpenRouter's most recent round was a $13M Seed in 2024, led by Andreessen Horowitz.
Where is OpenRouter headquartered?
OpenRouter is headquartered in San Francisco, CA, and was founded in 2023 by Alex Atallah, Louis Vichy.