Sim vs Flowise
A detailed comparison to help you choose between Sim and Flowise.
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Verdict: Flowise wins
Flowise scores 4.0/5, edging out Sim at 3.9/5. Developers and technical teams who want visual control over LLM pipelines and are happy to self-host or manage their own production runtime.
Sim Build and test AI agents without code | Flowise Visual LLM app builder with drag and drop | |
|---|---|---|
| Rating | 3.9 (1 review) | 4.0 (1 review) |
| Pricing Model | freemium | freemium |
| Starting Price | Free tier available | Free tier available |
| Best For | Technical teams that want an inspectable, self-hostable agent orchestration layer with real governance controls instead of a closed agent builder. | Developers and technical teams who want visual control over LLM pipelines and are happy to self-host or manage their own production runtime. |
| Free Tier | ||
| API Access | ||
| Team Features | ||
| Open Source | ||
| Tags | open sourcefree tierapi access | open sourceno code |
| Visit Sim → | Visit Flowise → |
Sim
Pros
- + Per-block run traces show inputs, outputs, duration and cost for every step — in my 50-run test this made the two retry-plagued runs immediately visible
- + Apache-2.0 codebase self-hosted via Docker Compose in about fifteen minutes in my test, with the same canvas and logs as the hosted workspace
- + Typed workflow vocabulary (Router, Guardrails, Evaluator, Human-in-the-Loop) forces you to say where decisions and quality checks happen
- + Free tier with 1,000 credits, plus per-member spend limits and permission groups for model and integration access
- + Deploys as chat, API or MCP server from the same workflow
Cons
- - Plan details churned through 2026: third-party trackers disagree on whether the free 1,000 credits are monthly or one-time
- - Integration count claims conflict — the homepage says 270+, directory listings say 1,000+
- - Governance stack (SSO, SOC 2, audit logs, self-hosting support) is gated at Enterprise pricing
- - Product launched publicly in 2025 and is still moving under users; no native mobile app
- - Support is a community repository below Enterprise
Flowise
Pros
- + Node canvas gives LangChain-level control over retrieval, agents, and tools without writing code — my retrieval agent took one sitting
- + Self-host path is real: npm or Docker, minutes to localhost:3000, Apache 2.0 core license
- + Human-in-the-loop review nodes make the agents-propose-humans-release pattern easy to wire
- + Wide model and vector-store support (100+ LLMs, embeddings, vector DBs per the vendor) keeps you off proprietary lock-in
- + Evaluations, metrics, and run observability are built into the builder rather than bolted on
Cons
- - Node picker presumes you understand embeddings, chains, and retrieval strategies — beginners are lost quickly
- - Production self-host means doing your own persistence, secrets, queue/workers, and uptime — time not visible in the free price
- - Enterprise identity and permission features live under a commercial license inside the same repo
- - Cloud free tier (100 predictions/month) is too small to judge real performance
- - Fast-moving node surface and uneven community templates mean upgrades can break flows
Frequently Asked Questions
Which is better, Sim or Flowise?▼
Flowise scores higher at 4.0/5 vs 3.9/5 for Sim, making it the better-rated option in our comparison.
What is the difference between Sim and Flowise?▼
Sim: Sim is an open-source AI workspace where companies build, distribute and govern AI agents, with hundreds of integrations, all major LLMs and a self-hosting option. Flowise: Flowise is an open-source visual builder for LLM applications and agents, wiring models, tools and data sources together on a canvas.
Is Sim or Flowise more affordable?▼
Sim starts at €0/mo, Flowise starts at €0/mo. Check the comparison table above for current pricing.
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