OpenRouter unveiled the Fusion API on 2026-06-13, presenting it as a new compound model that elevates the company from an API reseller to a model provider. The firm claims Fusion matches Fable-level intelligence while costing 50% less, framing the product as both higher-performing and more cost-efficient.
OpenRouter announced the Fusion API on 2026-06-13, positioning the company beyond an API reseller into a model provider.
Openrouter is not just an API reseller anymore
OpenRouter (@OpenRouter)
Introducing the Fusion API, the smartest compound model in the market.
Fusion achieves Fable-level intelligence at half the price.
How it works 👇
— https://nitter.net/OpenRouter/status/2065856853989270011#m