Raised $160M across disclosed rounds.[1][2][5][6][10][3][4]

Series B (in talks) closed April 2026, led by CapitalG (Alphabet).[3][4][5]

post-money valuation is not publicly disclosed.

Named investors include Andreessen Horowitz, Menlo Ventures, Sequoia Capital, CapitalG (Alphabet).[1][2][5][6]

LiteLLM · litellm.ai · Directly named as an alternative to OpenRouter in a head-to-head comparison article (Fathom Journal, 2026-04-04); same buyer (developers building on multiple LLMs), same workflow (single API abstraction over many providers), same product category (LLM...[3]

Fireworks AI · fireworks.ai · Listed as a talent source in OpenRouter's workforce data (2 hires from Fireworks AI), and operates in the same developer inference API market — same buyer (engineering teams calling LLM APIs), same budget (inference spend), overlapping provider set.[2]

Together AI · together.ai · Operates in the same developer inference API category — same buyer (developers accessing multiple open-source LLMs via API), same budget (per-token inference spend), and cited alongside OpenRouter in market maps covering the LLM access and routing layer.[2][11]

· Same buyer (developers and engineering teams building multi-model AI apps), same workflow (single OpenAI-compatible endpoint routing to multiple providers with failover), same product category as OpenRouter; frequently named together in developer comparisons...