OpenRouter

OpenRouter is an American artificial intelligence company that operates a unified API and marketplace for accessing over 400 large language models (LLMs) from various providers. Launched in 2023 by Alex Atallah, the platform acts as a middleware layer, letting developers route requests to models from OpenAI, Anthropic, Google, Meta, Mistral, and emerging Chinese firms without juggling multiple API keys or billing relationships. It's become a go-to hub for developers who want to experiment with a wide range of AI models, compare outputs, and switch providers based on cost or performance metrics.

The company's core service includes a task-aware feature called Router, which automatically directs queries to the most popular or cost-effective model for specific tasks. This simplifies development workflows, allowing teams to chain multiple models together in complex pipelines. OpenRouter offers transparent, usage-based pricing with free tiers for experimentation, plus pay-as-you-go and enterprise plans. By mid-2026, the platform was processing more than a quadrillion tokens annually, a massive leap from the ~100 trillion tokens when Menlo Ventures invested earlier that year.

OpenRouter has become a staple in the AI developer community, effectively acting as an aggregator for AI inference. Its neutrality and breadth of model selection, including rapid adoption of Chinese open-source models like DeepSeek and Z.ai, set it apart. By mid-2026, these affordable models accounted for over 50% of usage volume. The company's revenue trajectory is steep, with reports indicating a 29% month-over-month growth and an annualized run rate of $140 million in July 2026.

In May 2026, OpenRouter raised $113 million, more than doubling its valuation to approximately $1.3 billion. That funding supported expansion into enterprise AI inference routing. A major development soon followed: reports from July 2026 revealed that Stripe was in advanced talks to acquire OpenRouter for around $10 billion, a figure representing roughly 70 times annual revenue. This potential deal underscores the strategic value of OpenRouter's routing infrastructure in the broader payments and AI economy. [edit]