プレゼンテーションとスプレッドシートに最適なAIエージェント

エビデンスが示すこと： ChatGPT Work extends the familiar ChatGPT environment into longer-running research and knowledge-work tasks with connected tools and finished documents, spreadsheets, presentations and sites. ChatGPT has the largest body of general user feedback here: users consistently value its speed, accessibility and broad capability, while agent-mode reports still describe usage limits, occasional wrong turns and the need to supervise consequential actions.

テストすべき点と価格： Test the exact connected apps your team uses, not a demo workflow. Record task-limit consumption, connector failures, citation corrections, spreadsheet and presentation repair, context that must be repeated, and whether recurring work completes without intervention.

選ぶべき人： Best for teams already working in ChatGPT that need one broad assistant across research, writing, coding and office deliverables. Do not pay for it solely as an autonomous worker if ordinary ChatGPT already covers the real workload.

エビデンスが示すこと： Manus is strongest as a delegated project agent rather than a faster chat window. Officially it can research, work in a browser and sandbox, produce documents, slides and websites, and continue longer jobs in the background. Independent hands-on reports praise the visible task plan and useful finished artefacts, but also report crashes, blocked sites and uneven results on ambiguous tasks.

テストすべき点と価格： Run five real jobs and record credits spent—including failed attempts—completion rate, factual corrections, blocked logins or CAPTCHAs, export quality and reviewer minutes. Credit use can vary sharply with task complexity, so the subscription price alone is not a useful comparison.

選ぶべき人： Best for people who regularly delegate bounded research-to-deliverable projects and are willing to supervise them. Avoid making it the only production workflow until your own test shows stable completion, predictable credit use and acceptable exports.

エビデンスが示すこと： Claude Cowork is aimed at file-heavy and cross-app knowledge work: reading local files and connected sources, synthesising large source packs, revising documents and carrying multi-step work into deliverables. The product is newer than Claude chat, so independent Cowork-specific evidence is still limited; official capability claims are clearer than long-term reliability data.

テストすべき点と価格： Use a representative folder with messy files, conflicting versions and a strict output template. Record source attribution, missed files, long-document consistency, permission prompts, formatting repair, usage limits and whether scheduled or connected-app work completes as expected.

選ぶべき人： Best for document-intensive teams that value careful synthesis and already prefer Claude's writing and context handling. Treat it as a supervised pilot—not a proven autonomous back office—until it passes repeated tests on your files and access controls.