Merge launches Fusion to combine multiple AI models into one answer
Shensi Ding says a panel of cheaper models matched Claude Fable 5 on a 25-task research test at one-quarter of the cost.
By Ryan Merket · Published
Primary source: X
Why it matters
Fusion turns model disagreement into a paid infrastructure layer, advancing Merge's shift from SaaS integrations into the control plane for production AI.
Merge co-founder and CEO Shensi Ding (@shensi) launched Fusion on July 23rd, giving developers one API call that sends a prompt to several AI models and uses a separate judge model to assemble their responses into a final answer.
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