Agentic Index
Dify vs Sim (2026)
Two open source platforms for building agent workflows, and Sim documents the deeper card at 12.5 of 14 against 9.5.
Sim is an open source workspace where teams build, deploy and manage agent workflows visually, conversationally through Mothership, or in code, at 25 dollars a month for Pro with 5,000 credits. Dify is an open source platform for building agents, chatbots and workflows, from 59 dollars a month with a free sandbox and free self hosting. Sim's three ways into the same workflow is the differentiator: visual for the analyst, conversational for the newcomer, code for the engineer.
Choose Dify if
- Dify's larger community and longer track record matter for a foundational choice.
- Chatbots alongside agents and workflows is the range you need.
- A free sandbox plus free self hosting is the evaluation path you want.
Choose Sim if
- Documented coverage is materially deeper across the matrix.
- Building the same workflow visually, conversationally or in code suits a mixed team.
- Twenty five dollars a month against fifty nine is a real difference at team scale.
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