Free alternatives to Synthflow

The 12 closest to Synthflow

1. 

   Smith.ai

   Phone answering by an AI receptionist, with live agents as an option

   Free plan · from $150/mo

   What is free: Free AI plan: 25 answered calls a month with no expiry, then $3.00 per call. A credit card is required to sign up.

   • Smith.ai has a free plan. Synthflow does not.
   • Smith.ai also covers AI support agent and appointment booking.
   Smith.ai vs SynthflowSmith.ai pricing and details
2. 

   Devin

   Autonomous software engineer that runs in the cloud or locally

   Free plan · from $20/mo

   What is free: a light quota to code with agents, limited model availability, unlimited inline edits and unlimited Tab completions.

   • Devin has a free plan. Synthflow does not.
   • Only Devin lists macOS, Windows and Linux apps.
   • Synthflow also covers business phone line.
   Devin pricing and details
3. 

   Factory

   Coding agents called Droids for desktop, terminal and web

   Free plan · from $20/mo

   What is free: Bring your own inference by signing in with ChatGPT, GitHub Copilot or OpenRouter, or by connecting your own API keys.

   • Factory has a free plan. Synthflow does not.
   • Only Factory lists macOS, Windows and Linux apps.
   • Factory also covers workflow automation.
   • Synthflow also covers business phone line.
   Factory pricing and details
4. 

   Jules

   Google's asynchronous coding agent that opens pull requests

   Free plan

   What is free: 15 tasks per day (rolling 24 hours), 3 concurrent tasks, Gemini 2.5 Pro.

   • Jules has a free plan. Synthflow does not.
   • Jules also covers workflow automation.
   • Synthflow also covers business phone line.
   Jules pricing and details
5. 

   Letta

   Stateful agents with long-term memory, from the MemGPT team

   Free plan · from $20/mo

   What is free: Up to 3 stateful agents and 5 MiB per memory repository; bring your own API keys or an external coding plan.

   • Letta has a free plan. Synthflow does not.
   • Letta is open source, according to its own site.
   • Letta also covers workflow automation.
   • Synthflow also covers business phone line.
   Letta pricing and details
6. 

   Wordware

   Build AI workflows and agents by writing them in plain English

   Free plan

   What is free: The product page offers a Start for free sign-up; its limits are not published on a page that could be read.

   • Wordware has a free plan. Synthflow does not.
   • Wordware also covers workflow automation and no-code.
   • Synthflow also covers business phone line.
   Wordware pricing and details
7. 

   Composio

   Tool and app connections with managed auth for AI agents

   Free plan · from $18/mo

   What is free: Composio For You Free: up to 3 members and 10,000 tool calls a month. Platform Hobby: 100,000 tool calls and 50,000 trigger events a month.

   • Composio has a free plan. Synthflow does not.
   • Composio also covers workflow automation.
   • Synthflow also covers business phone line.
   Composio pricing and details
8. 

   Mem0

   Memory layer that lets AI agents remember across sessions

   Free plan

   What is free: Unlimited end users; 10,000 adds and 1,000 retrievals a month for the first 30 days, or 50,000 adds and 10,000 retrievals a month with your own LLM key.

   • Mem0 has a free plan. Synthflow does not.
   • Mem0 is open source and self-hostable, according to its own site.
   • Synthflow also covers business phone line.
   Mem0 pricing and details
9. 

   Manus

   General AI agent for research, slides, websites and browser tasks

   Free plan · from $20/mo

   What is free: 300 refresh credits a day, capped at 1,500 a month, with 1 concurrent task, 2 scheduled tasks, Chat Mode and only the Manus 2.0 Lite model in Agent Mode.

   • Manus has a free plan. Synthflow does not.
   • Only Manus lists macOS, Windows, iOS and Android apps.
   • Only Manus lists a browser extension.
   • Manus also covers app builder, research and presentations.
   Manus pricing and details
10. 

    Poke

    AI assistant you text in Messages, WhatsApp or Telegram

    Free plan · from $19/mo

    What is free: Free plan with no credit card: app, email and calendar connections and a small usage allowance that refills automatically. Once it is used up, Poke keeps responding in a lighter mode.

    • Poke has a free plan. Synthflow does not.
    • Poke also covers chat assistant and workflow automation.
    • Synthflow also covers business phone line.
    Poke pricing and details
11. 

    MindStudio

    No-code builder for AI agents, with 200+ models billed at cost

    Free plan · from $16/mo

    What is free: One agent and 1,000 runs a month. AI model usage is charged on top at the provider's price, or you can connect your own API keys.

    • MindStudio has a free plan. Synthflow does not.
    • Only MindStudio lists a browser extension.
    • MindStudio is self-hostable, according to its own site.
    • MindStudio also covers templates, workflow automation, app builder and no-code.
    MindStudio pricing and details
12. 

    AutoGPT

    Open-source agent platform with a hosted team of AI Experts

    Free plan · from $42.50/mo

    What is free: Self-hosting the open-source platform is free; you supply the infrastructure and your own model API keys. The hosted cloud has no free plan, only a 7-day Pro trial.

    • AutoGPT has a free plan. Synthflow does not.
    • AutoGPT is open source and self-hostable, according to its own site.
    • AutoGPT also covers workflow automation.
    • Synthflow also covers business phone line.
    AutoGPT pricing and details

Common questions

This page is built from the listings. A tool is here because its listing says so, and the order is how close each is to Synthflow: the alternatives its listing names first, then the tools that share the most features with it.