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Vapi alternatives · AI Agents

Open-source alternatives to Vapi

Vapi is not described as open source on its own site. 40 of the 178 other AI agents in this directory are open source, according to their own sites.

Vapi is a paid product with a free trial, starting at $29 per month (Core); usage-only starts at $0.05 per minute hosting. 37 of them are free or have a free plan.

40 tools · Listings checked up to Nov 13, 2026 · Where the facts come from

The 12 closest to Vapi

  1. LiveKit Agents

    Open source framework and cloud for voice and video AI agents

    • LiveKit Agents starts at $50 per month. Vapi starts at $29 per month (Core); usage-only starts at $0.05 per minute hosting.
    • LiveKit Agents has a free plan. Vapi does not, though it has a free trial.
    • LiveKit Agents is open source, according to its own site.
    LiveKit Agents vs VapiLiveKit Agents pricing and details

  2. Pipecat

    Open source framework for building voice and multimodal AI agents

    • Pipecat has a free plan. Vapi does not, though it has a free trial.
    • Pipecat is open source and self-hostable, according to its own site.
    Pipecat vs VapiPipecat pricing and details

  3. Letta

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

    • Letta starts at $20 per month. Vapi starts at $29 per month (Core); usage-only starts at $0.05 per minute hosting.
    • Letta has a free plan. Vapi 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

  4. E2B

    Cloud sandboxes where AI agents run code and tools

    • E2B starts at $150 per month, plus per-second sandbox usage. Vapi starts at $29 per month (Core); usage-only starts at $0.05 per minute hosting.
    • E2B is open source, according to its own site.
    E2B pricing and details

  5. Mem0

    Memory layer that lets AI agents remember across sessions

    • Mem0 has a free plan. Vapi does not, though it has a free trial.
    • Mem0 is open source and self-hostable, according to its own site.
    Mem0 pricing and details

  6. Open Interpreter

    Open-source coding agent and desktop agent using your own model keys

    • Open Interpreter is free. Vapi starts at $29 per month (Core); usage-only starts at $0.05 per minute hosting.
    • Open Interpreter has a free plan. Vapi does not, though it has a free trial.
    • Only Open Interpreter lists macOS, Windows and Linux apps.
    • Only Vapi lists a web app.
    Open Interpreter pricing and details

  7. AutoGPT

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

    • AutoGPT starts at $42.50 per month, billed yearly at $510 (Pro); $50 billed monthly. Vapi starts at $29 per month (Core); usage-only starts at $0.05 per minute hosting.
    • AutoGPT has a free plan. Vapi 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

  8. Dify

    Open-source platform for building AI agents and agentic workflows

    • Dify starts at $590 per workspace / year (Professional); $59 billed monthly. Vapi starts at $29 per month (Core); usage-only starts at $0.05 per minute hosting.
    • Dify has a free plan. Vapi does not, though it has a free trial.
    • Dify is open source and self-hostable, according to its own site.
    • Dify also covers workflow automation and no-code.
    Dify pricing and details

  9. Kortix

    Open-source platform for running AI agents from a git repo you own

    • Kortix starts at $50 per month for 5,000 credits (Credits), with unlimited members. Vapi starts at $29 per month (Core); usage-only starts at $0.05 per minute hosting.
    • Kortix has a free plan. Vapi does not, though it has a free trial.
    • Only Kortix lists macOS, Windows, Linux, iOS and Android apps.
    • Kortix is open source and self-hostable, according to its own site.
    Kortix pricing and details

  10. goose

    Open-source AI agent with a desktop app, CLI and API

    • goose is free. Vapi starts at $29 per month (Core); usage-only starts at $0.05 per minute hosting.
    • goose has a free plan. Vapi does not, though it has a free trial.
    • Only goose lists macOS, Windows and Linux apps.
    • Only Vapi lists a web app.
    goose pricing and details

  11. Langflow

    Open-source visual builder for AI agents and MCP servers

    • Langflow has a free plan. Vapi does not, though it has a free trial.
    • Only Langflow lists macOS, Windows and Linux apps.
    • Langflow is open source and self-hostable, according to its own site.
    • Langflow also covers templates.
    Langflow pricing and details

  12. Sim

    Open-source workspace for building and running AI agents

    • Sim starts at $21.25 per user / month, billed annually ($255); $25 billed monthly. Vapi starts at $29 per month (Core); usage-only starts at $0.05 per minute hosting.
    • Sim has a free plan. Vapi does not, though it has a free trial.
    • Only Sim lists a macOS app.
    • Sim is open source and self-hostable, according to its own site.
    Sim pricing and details

28 more that are open source

All 40 in one table

Common questions

Is there an open-source alternative to Vapi?

Yes. LiveKit Agents, Pipecat, Letta, E2B, Mem0, Open Interpreter, AutoGPT, Dify and 32 more are open source, according to their own sites.

Is Vapi open source?

Vapi is not described as open source on its own site. The listing was checked on Nov 12, 2026 against the pages it cites.

Which of these AI agents are free?

LiveKit Agents, Pipecat, Letta, Mem0, Open Interpreter, AutoGPT, Dify, Kortix and 29 more are free or have a free plan.

When was this checked?

Each listing shows its own date. On this page they run from Oct 5, 2026 to Nov 13, 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 Vapi: the alternatives its listing names first, then the tools that share the most features with it.