OpenRouter launches Fusion API, claims Fable-level AI at half cost

OpenRouter launched Fusion on June 12, a server-side API that combines multiple cheap models via a judge and synthesizer to match Claude Fable 5. On Perplexity's DRACO benchmark, a budget panel landed within 1% of Fable 5 at roughly half the cost, timed with Fable 5's suspension due to export controls.