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Retell AI alternatives · AI Agents

Free alternatives to Retell AI

Retell AI has no free plan. 58 of the 101 other AI agents in this directory are free or have a free plan.

Retell AI is a paid product with a free trial, starting at $0 to start, then $0.07 to $0.31 per minute for voice agents. 4 of them have no paid plan at all; the rest pair a free plan with paid ones.

58 tools · Listings checked up to Nov 12, 2026 · Where the facts come from

The 12 closest to Retell AI

  1. Smith.ai

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

    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 starts at $150 per month for 75 AI-answered calls. Retell AI starts at $0 to start, then $0.07 to $0.31 per minute for voice agents.
    • Smith.ai has a free plan. Retell AI does not, though it has a free trial.
    • Smith.ai also covers AI support agent, business phone line and appointment booking.
    • Retell AI also covers chatbots.
    Smith.ai vs Retell AISmith.ai pricing and details

  2. Devin

    Autonomous software engineer that runs in the cloud or locally

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

    • Devin starts at $20 per month. Retell AI starts at $0 to start, then $0.07 to $0.31 per minute for voice agents.
    • Devin has a free plan. Retell AI does not, though it has a free trial.
    • Only Devin lists macOS, Windows and Linux apps.
    • Retell AI also covers chatbots.
    Devin pricing and details

  3. Factory

    Coding agents called Droids for desktop, terminal and web

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

    • Factory starts at $20 per individual / month (billing basis not stated). Retell AI starts at $0 to start, then $0.07 to $0.31 per minute for voice agents.
    • Factory has a free plan. Retell AI does not, though it has a free trial.
    • Only Factory lists macOS, Windows and Linux apps.
    • Factory also covers workflow automation.
    Factory pricing and details

  4. Jules

    Google's asynchronous coding agent that opens pull requests

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

    • Jules has a free plan. Retell AI does not, though it has a free trial.
    • Jules also covers workflow automation.
    • Retell AI also covers chatbots.
    Jules pricing and details

  5. Letta

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

    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 starts at $20 per month. Retell AI starts at $0 to start, then $0.07 to $0.31 per minute for voice agents.
    • Letta has a free plan. Retell AI does not, though it has a free trial.
    • Letta is open source, according to its own site.
    • Letta also covers workflow automation.
    Letta pricing and details

  6. Wordware

    Build AI workflows and agents by writing them in plain English

    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. Retell AI does not, though it has a free trial.
    • Wordware also covers workflow automation and no-code.
    • Retell AI also covers chatbots.
    Wordware pricing and details

  7. Composio

    Tool and app connections with managed auth for AI agents

    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 starts at $18 per seat / month (Composio For You) or $29 per month (developer platform). Retell AI starts at $0 to start, then $0.07 to $0.31 per minute for voice agents.
    • Composio has a free plan. Retell AI does not, though it has a free trial.
    • Composio also covers workflow automation.
    • Retell AI also covers chatbots.
    Composio pricing and details

  8. Mem0

    Memory layer that lets AI agents remember across sessions

    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. Retell AI does not, though it has a free trial.
    • Mem0 is open source and self-hostable, according to its own site.
    • Retell AI also covers chatbots.
    Mem0 pricing and details

  9. Manus

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

    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 starts at $20 per month, billed monthly (Pro with 4,000 credits). Retell AI starts at $0 to start, then $0.07 to $0.31 per minute for voice agents.
    • Manus has a free plan. Retell AI does not, though it has a free trial.
    • Only Manus lists macOS, Windows, iOS and Android apps.
    • Only Manus lists a browser extension.
    Manus pricing and details

  10. Poke

    AI assistant you text in Messages, WhatsApp or Telegram

    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 starts at $19 per month, billed monthly (Pro). Retell AI starts at $0 to start, then $0.07 to $0.31 per minute for voice agents.
    • Poke has a free plan. Retell AI does not, though it has a free trial.
    • Poke also covers chat assistant and workflow automation.
    • Retell AI also covers chatbots.
    Poke pricing and details

  11. MindStudio

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

    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 starts at $16 per month plus model usage, billed yearly. Retell AI starts at $0 to start, then $0.07 to $0.31 per minute for voice agents.
    • MindStudio has a free plan. Retell AI does not, though it has a free trial.
    • Only MindStudio lists a browser extension.
    • MindStudio is self-hostable, according to its own site.
    MindStudio pricing and details

  12. AutoGPT

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

    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 starts at $42.50 per month, billed yearly at $510 (Pro); $50 billed monthly. Retell AI starts at $0 to start, then $0.07 to $0.31 per minute for voice agents.
    • AutoGPT has a free plan. Retell AI does not, though it has a free trial.
    • AutoGPT is open source and self-hostable, according to its own site.
    • AutoGPT also covers workflow automation.
    AutoGPT pricing and details

46 more that are free or have a free plan

All 58 in one table

Common questions

Is there a free alternative to Retell AI?

Yes. Smith.ai, Devin, Factory, Jules, Letta, Wordware, Composio, Mem0 and 50 more are free or have a free plan.

Does Retell AI have a free plan?

Retell AI has no free plan. Retell AI is a paid product with a free trial, starting at $0 to start, then $0.07 to $0.31 per minute for voice agents.

When was this checked?

Each listing shows its own date. On this page they run from Oct 5, 2026 to Nov 12, 2026. Vendors change prices and plans without notice, so confirm on their site before you buy.

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 Retell AI: the alternatives its listing names first, then the tools that share the most features with it.