Agent frameworks pack: free plans for Dify, Mastra, CrewAI, LangSmith, LlamaCloud and Composio

Most agent frameworks are open source, and most of them now sell a hosted platform on top. The hosted versions usually have a free plan, but the limits are measured in different units: message credits, workflow executions, traces, observability events, CPU hours. This pack puts six of those offers in one place so you can compare them before you pick one.

Five of the six are free plans with no application. The sixth, Composio's startup deal, needs an application. Every row below was checked on the vendor's own page; each card shows the quote and when we last verified it.

Agent frameworks pack

The offers

• Dify (Sandbox plan: free, 200 message credits for OpenAI, Anthropic, Gemini, xAI and Tongyi models)
• Mastra (Mastra platform Starter: free, 100K observability events and 24 CPU hours per month)
• CrewAI (Basic plan: free, 50 workflow executions per month)
• LangChain (LangSmith) (Developer plan $0: up to 5k base traces/month)
• LlamaIndex (LlamaCloud) (Free plan includes 10K credits)
• Composio (Six months on the Pro plan, free)

What each free plan actually gives you

• Dify Sandbox gives 200 message credits you can spend on models from OpenAI, Anthropic, Gemini, xAI and Tongyi. Once they're used up you plug in your own API key. Sandbox also includes 5 apps, 50 knowledge documents and 3,000 trigger events.
• Mastra Starter is the hosted side of the open-source TypeScript framework: 100K observability events and 24 CPU hours per month, with data kept for 15 days. Usage past that is billed at the listed rates.
• CrewAI Basic includes the visual editor, the AI copilot, GitHub integration and 50 workflow executions per month. The open-source framework itself is free to self-host.
• LangSmith Developer is for solo users: up to 5k base traces per month.
• LlamaCloud Free includes 10K credits.
• Composio for startups gives accepted startups six months on the Pro plan, free. Composio is a tool-integration platform for agents.

Dify (Sandbox plan: free, 200 message credits for OpenAI, Anthropic, Gemini, xAI and Tongyi models)

Mastra (Mastra platform Starter: free, 100K observability events and 24 CPU hours per month)

CrewAI (Basic plan: free, 50 workflow executions per month)

A sensible order

1. Pick the framework first. Dify and CrewAI both have visual builders; Mastra is code-first TypeScript. Their free plans need nothing but a signup.
2. Add tracing next. LangSmith Developer gives solo users 5k base traces a month; Mastra Starter includes its own observability events.
3. Try LlamaCloud Free (10K credits) if you are building on LlamaIndex tooling.
4. Apply to Composio's startup program last, once you know which tools your agent calls. It is the only offer here that needs an application.

Free plans change. Check the source link on each card before you build around a limit, and see the full pack page for the live list.

Originally published on Perq, where every listing carries a source link and a last-verified date. Perq is run by Avatar 8 LLC.