Opus Clip is laser-focused on solving the content multiplier problem: you've got long-form video and need dozens of social clips yesterday. It identifies the best moments, adds captions automatically, and optimizes for virality. Runway is a professional-grade creative suite that happens to include video editing—think generative AI, text-to-video, and Hollywood-level effects. Its AI quality is genuinely impressive, but that power comes with a learning curve in figuring out what you actually want to create. The meaningful difference isn't quality—both are excellent—it's intent. Opus Clip assumes you have source material and need distribution assets. Runway assumes you're creating something new or substantially transforming footage. Opus Clip's AI looks for hooks and punchlines in your existing content; Runway's AI generates entirely new visual elements. For most marketing workflows, repurposing beats creating from scratch every time. Choose Opus Clip if your challenge is "we have great content but no time to cut it up for social." Choose Runway if you're thinking "we need to produce video content we don't have the budget to film traditionally." For the average business trying to maintain a social presence, Opus Clip's focused approach wins—it's the difference between a Swiss Army knife and the exact tool you actually need.