How ManusAI Outperformed GPT-4… and Still Lost My Trust
Last Updated on October 18, 2025 by Editorial Team
Author(s): R. Thompson (PhD)
Originally published on Towards AI.
The messy truth behind ManusAI’s credit-based automation model
You juggle Slack pings, email threads, half-finished spreadsheets, and the nagging feeling you’re doing five jobs at once. There’s a pair of new tools promising to stop that. One is a shiny, managed product that treats AI like a delivered service. The other is an open-source revolt that hands you the keys and tells you to build better doors.
This article compares ManusAI and Suna.so Agent from the perspective of an AI architect, focusing on the implications of their respective automation models regarding predictability, privacy, and cost-effectiveness. ManusAI, being a managed service, offers quick deployment but raises concerns about credit-based billing and data control. In contrast, Suna.so provides an open-source alternative that emphasizes user control and privacy but demands more technical expertise for implementation. Through the analysis, the article highlights the strategic choices teams face in adopting these AI tools based on specific operational needs and risk assessments.
Read the full blog for free on Medium.
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