Use case

Build multi-agent workflows

Crews, graphs, and orchestrators for multi-step work.

• builders

A short list that fits this job, not a ranking and not a paid order. Smoke-tested means we ran a local install or import. Docs checked means we read the official site on 2026-10-15.

Short list

• CrewAI

  CR

  Open-source framework for crews of role-based agents that split a job into tasks.

  Role-based crews in Python. We installed the package and imported it on October 15, 2026 — no API key and no model call.

  Smoke-testedOpen sourceNew releaseAgent

  Checked October 15, 2026

  Free tier: Yes · 50 workflow executions per month.

  From: Check pricing (opens in a new tab)

  Checked October 16, 2026

  • +Strength. We imported crewai 1.15.28, an open-source framework that splits a job across role-based agents.
  • −Weakness. The cloud free plan includes 50 workflow executions per month, and paid use above that is custom Enterprise pricing.

• LangChain

  LA

  Open-source libraries for agents, chains, and tool calling, plus optional LangSmith traces.

  Libraries for agents and tool calling. Local import checked the same day. LangSmith tracing is a separate product on the pricing page.

  Smoke-testedOpen sourceNew releaseAgent

  Checked October 15, 2026

  Free tier: Yes · Up to 5,000 base traces per month, then pay as you go.

  From: $39/mo

  Checked October 16, 2026

  • +Strength. We imported langchain 1.4.6, including create_agent, for composing tool-calling workflows in code.
  • −Weakness. LangSmith's developer plan includes 5,000 base traces per month before usage billing, and Plus is $39 per seat per month.

• AutoGen (Microsoft)

  AM

  Microsoft open-source Python library for multi-agent conversations. Newest release we found is from 2025.

  Microsoft’s multi-agent Python library. We imported it locally. The newest Python release we found was September 30, 2025.

  Smoke-testedOpen sourceAgent

  Checked October 15, 2026

  Free tier: Check pricing (opens in a new tab)

  From: Check pricing (opens in a new tab)

  Checked October 16, 2026

  • +Strength. We imported autogen-agentchat 0.7.5 locally, and the library is open source with no product paywall.
  • −Weakness. The newest Python release we found is dated September 30, 2025, older than the peers we checked.

• Dify

  DI

  Open-source platform to build agent workflows visually, with a self-hosted community edition.

  A visual builder with a self-hosted community edition. Site, docs, and pricing were checked; we did not install it.

  Docs checkedOpen sourceAgent

  Checked October 15, 2026

  Free tier: Yes · 200 message credits.

  From: Check pricing (opens in a new tab)

  Checked October 16, 2026

  • +Strength. The pricing page includes a self-hosted community edition, and the cloud free plan includes 200 message credits.
  • −Weakness. The cloud free plan stops at 200 message credits, and the page we checked did not list a monthly starting price.

Also in this use case

• LlamaIndex

  LL

  Open-source framework for retrieval and agents. The cloud free plan includes 10,000 credits.

  Smoke-testedOpen sourceAgent

  Checked October 15, 2026

  Free tier: Yes · 10,000 credits.

  From: $50/mo

  Checked October 16, 2026

  • +Strength. We imported llama-index-core 0.14.25, and the cloud free plan includes 10,000 credits.
  • −Weakness. Cloud Starter is $50 per month after the 10,000 free credits.

• AutoGPT

  AU

  Open-source agent project with a platform beta. Site and repo checked; local install not run.

  Docs checkedOpen sourceNew releaseAgent

  Checked October 15, 2026

  Free tier: No

  From: $50/mo

  Trial: 7 days

  Checked October 16, 2026

  • +Strength. The open-source repo is the free path, and a platform beta release was published on October 14, 2026.
  • −Weakness. The hosted plan we checked starts at $50 per month after a 7-day trial, so it is not a free product.

• Flowise

  FL

  Open-source, low-code builder for LLM flows you can self-host. Cloud free tier was not clearly confirmed.

  Docs checkedOpen sourceAgent

  Checked October 15, 2026

  Free tier: Check pricing (opens in a new tab)

  From: Check pricing (opens in a new tab)

  Checked October 16, 2026

  • +Strength. The open-source npm package flowise 3.1.4 is a low-code builder you can self-host.
  • −Weakness. The pricing page came back too thin to confirm a cloud free tier.

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