Loma vs Sim (2026)
A side-by-side comparison of Loma and Sim on pricing, features, and fit, so you can decide which is right for you.
Quick answer
Loma and Sim are both strong choices, but they fit different needs. Choose Loma if you mainly need coordinating multiple llm-based agents that need shared knowledge to avoid conflicting outputs — its edge is completely free and open-source with no subscription or saas fees. Choose Sim if you need automating multi-step customer support workflows by connecting ai agents to helpdesk and crm systems — its edge is truly open-source under apache 2.0, making it free to self-host with no vendor lock-in. Loma starts at Free; Sim starts at Pricing on request (Sim Cloud).
Features compared
- Self-hosted shared memory layer deployable on your own infrastructure
- Company-wide knowledge store accessible by multiple AI agents simultaneously
- Recallable context that persists across agent sessions and team interactions
- Open-source codebase with full customization and integration flexibility
- Visual drag-and-drop agent builder for designing complex AI workflows without writing code
- Multi-LLM support lets teams swap or combine OpenAI, Anthropic, Google, and other leading models
- Over 1,000 pre-built integrations connect agents to CRMs, databases, communication tools, and APIs
- Self-hosting option under Apache 2.0 license gives full data control and infrastructure flexibility
Pros & cons
- Completely free and open-source with no subscription or SaaS fees
- Full data privacy since everything runs on your own servers
- Enables true multi-agent coordination with a single shared memory source
- Requires technical expertise to self-host and maintain the infrastructure
- No managed cloud option for teams that prefer a hands-off deployment
- Truly open-source under Apache 2.0, making it free to self-host with no vendor lock-in
- Broad integration library and multi-LLM compatibility reduce setup time and increase workflow flexibility
- Visual builder lowers the barrier for non-developers while code access satisfies advanced technical teams
- Sim Cloud hosted pricing is not publicly listed, making cost estimation difficult before contacting sales
- As a newer open-source project, community support and documentation may be less mature than established competitors
The verdict
Choose Loma if
you mainly need to coordinating multiple llm-based agents that need shared knowledge to avoid conflicting outputs. Its edge: completely free and open-source with no subscription or saas fees.
Choose Sim if
you mainly need to automating multi-step customer support workflows by connecting ai agents to helpdesk and crm systems. Its edge: truly open-source under apache 2.0, making it free to self-host with no vendor lock-in.
Frequently asked questions
Is Loma better than Sim?
Neither is universally better. Loma is stronger for coordinating multiple llm-based agents that need shared knowledge to avoid conflicting outputs, with an edge in completely free and open-source with no subscription or saas fees. Sim is stronger for automating multi-step customer support workflows by connecting ai agents to helpdesk and crm systems, with an edge in truly open-source under apache 2.0, making it free to self-host with no vendor lock-in. Pick based on your main task.
Which is cheaper, Loma or Sim?
Loma starts at Free and Sim starts at Pricing on request (Sim Cloud). Free tier: Loma — Fully free and open-source with no usage limits or paywalls; Sim — Free, open-source, self-hostable (Apache 2.0).
What is Loma best for?
Loma is best for coordinating multiple llm-based agents that need shared knowledge to avoid conflicting outputs, storing and retrieving internal company knowledge for ai-assisted workflows, building internal ai assistants that remember prior context across departments.
What is Sim best for?
Sim is best for automating multi-step customer support workflows by connecting ai agents to helpdesk and crm systems, building internal operations bots that pull data from multiple sources and generate actionable reports, rapid prototyping of ai agent pipelines using the visual canvas before deploying to production.
Do Loma and Sim have free plans?
Loma: Fully free and open-source with no usage limits or paywalls. Sim: Free, open-source, self-hostable (Apache 2.0). Check each tool's pricing page for current limits, as plans change.