AI Agents Comparison 2025: OpenAI vs Comet vs Manus vs Genspark for Report Generation

Real-World Shoot-out: Four AI Agents, Nine Tasks, 300 Minutes of Truth What You’ll Get in the Next 10 Minutes The only side-by-side test you’ll need before choosing an AI agent Exact prompts, real run-times, and honest failure stories Zero hype, zero affiliate links, zero fluff 1. Why We Ran This Test—Again Last month we tested “general” agents. Today we zoom in on reports: the single biggest vertical for analysts, students, and founders. We picked four no-code agents you can open in a browser today: Agent One-Line Pitch OpenAI Agent ChatGPT’s official agent mode, pay-as-you-go Comet (Perplexity) Search-first, lightning fast Manus …