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OpenRouter launches Fusion, multi-model mode matching Claude Fable 5 at half cost

OpenRouter's new Fusion mode combines multiple AI models in parallel, achieving 64.7% on key benchmarks vs Claude Fable 5's 65.3% — a 0.6% gap at roughly half the price per token. The system routes prompts across models and synthesizes outputs, offering near-frontier performance for high-volume workloads.

OpenRouter launches Fusion, multi-model mode matching Claude Fable 5 at half cost — AIBriefs