OpenRouter Fusion

OpenRouter claims Fusion achieves Fable-level intelligence at half the price.

How does it work?

When you send a prompt to Fusion, we fan it out to a panel of models in parallel, each with web search and bash tools enabled. A judge model reads every response and extracts the structure: consensus points, contradictions, partial coverage, unique insights, blind spots. Then a synthesizer writes the final answer grounded in that analysis.

Fusion runs server-side, so developers can call it exactly like a single model slug "openrouter/fusion", or letting the model decide when to reach for it.

Sources: Tweet