Prompt 1 (excerpt): 'comprehensive market landscape report on AI tools for video creation - market size and projected growth with revenue figures and CAGR, top 5-7 companies and positioning, trends, regulatory environment, investment activity; cite all sources; executive briefing for C-level; 1,500-2,000 words.' Claude: ~479 sources, synthesis 'a little off'; ChatGPT: 8 minutes, ~22 sources, solid; Gemini: shows a plan to approve, best tables and competitor coverage; Manus: exhaustive, poorly organised, rendering glitches, unlinked claims; Genspark: executive-briefing look, untraceable sources. Spot-check: a '67.4% share' sentence was absent from its cited page. Scores (accuracy/completeness/actionability): Claude ~3.5-4/3.5/3.5; ChatGPT 3.5/4/3.5; Gemini 4/4.5/4; Manus 3.5/4/3.5; Genspark 3/4/4.5. Prompt 2: Notion vs Asana, monday.com, ClickUp, Airtable - features, pricing, segments, positioning, channels, strengths/weaknesses, reviews, strategic moves. Gemini 4/4/3.5 (good citations, weak formatting); Manus 3.5/4/4 (separate docs); Genspark 3.5/4/4.5; Claude ~3.5-4/4/4; ChatGPT 4/3.5/3.5-4.