OpenRouter doubles valuation to $1.3B as usage surges 5x in six months
OpenRouter closed a $113 million Series B led by CapitalG, more than doubling its valuation to $1.3 billion in a year as usage grew 5x in six months.
OpenRouter closed a $113 million Series B led by CapitalG on May 26, more than doubling its valuation to $1.3 billion in a year. The AI model router, which lets developers switch between dozens of models via a single API, saw usage grow 5x over the past six months—outpacing the broader LLM API market, which grew roughly 2x in the same window.
The round signals investor confidence in a multi-model future where developers route requests across OpenAI, Anthropic, Google, and open-weight models based on cost, latency, and task fit. Alphabet's growth fund backing an AI routing layer that competes indirectly with Google's own Vertex AI underscores how fragmented the model landscape has become.
What stands out
- Valuation doubled from roughly $600 million in Series A a year prior to $1.3 billion post-money.
- Usage grew 5x in requests over six months, driven by developers optimizing for cost and capability across models.
- Over 100 models now routed on a single endpoint, including GPT-4, Claude 3.5, Gemini 1.5, Llama 3.1, and dozens of open-weight alternatives.
- OpenRouter profits from a percentage markup on each API call, with revenue accelerating as developers switch models mid-workflow or A/B test across providers.
- CapitalG's backing of a routing layer that indirectly competes with Google's Vertex AI reflects how fragmented the model marketplace has become.
