# 3 Best Open Source Alternatives for Vertex AI

Canonical: https://caniforkit.com/vertex-ai
Last updated: 2026-11-07

Looking for the best open source alternative for Vertex AI? Compare 3 verified free and open source alternatives to Vertex AI (Dify, Mem0, Beam) with license details, self-hosting requirements, and practical trade-offs.

## Vertex AI Overview & Subscription Cost
- **Product**: Vertex AI
- **Category**: [ai assistants](https://caniforkit.com/category/ai-assistant)
- **Paid Subscription Price**: $15/month per seat
- **1-Seat Annualized Cost**: $180/year
- **5-Person Team Annualized Cost**: $900/year
- **10-Person Team Annualized Cost**: $1,800/year
- **Can I Vibe-Code / Rebuild It Myself?**: NO (use a free alternative, save the tokens)
- **Rebuild Verdict**: Instead of paying recurring SaaS fees for Vertex AI or rebuilding it from scratch, deploy one of the 3 battle-tested open-source alternatives like Dify.

## Verified Free & Open Source Alternatives

| Alternative | Type | License | Runs On | GitHub Stars | Head-to-Head |
| --- | --- | --- | --- | --- | --- |
| [Dify](https://caniforkit.com/fork/dify) | Open Source | Open Source | Self-host | ★ 160.6k | [Compare vs Vertex AI](https://caniforkit.com/vs/vertex-ai-vs-dify) |
| [Mem0](https://caniforkit.com/fork/mem0) | Open Source | Open Source | Self-host | ★ 68.5k | [Compare vs Vertex AI](https://caniforkit.com/vs/vertex-ai-vs-mem0) |
| [Beam](https://caniforkit.com/fork/beam) | Open Source | Open Source | Self-host | ★ 1.8k | [Compare vs Vertex AI](https://caniforkit.com/vs/vertex-ai-vs-beam) |

## In-Depth Alternative Profiles

### Dify
- **Fork Page**: [Dify Profile](https://caniforkit.com/fork/dify)
- **Head-to-Head Comparison**: [Vertex AI vs Dify](https://caniforkit.com/vs/vertex-ai-vs-dify)
- **Official Website**: https://dify.ai/
- **Source Code Repository**: https://github.com/langgenius/dify
- **License**: Open Source
- **Runs On**: Self-host
- **GitHub Stars**: 160.6k
- **Maintenance Activity**: nov 2026
- **Supported Platforms**: web, self-hosted, docker to self-host
- **Summary**: Visual platform for building agentic workflows, RAG pipelines, and LLM-powered apps. Supports hundreds of models, MCP integration, and self-hosted deployment.
- **The Catch vs Vertex AI**: Requires self-hosting setup, updates, and server maintenance compared to managed Vertex AI.
- **Installation**: Clone https://github.com/langgenius/dify or deploy with Docker Compose
- **Setup**: Deploy via Docker or binary release from GitHub and configure environment variables.
- **Data Storage**: All application data and configuration live on your own server or local database.

### Mem0
- **Fork Page**: [Mem0 Profile](https://caniforkit.com/fork/mem0)
- **Head-to-Head Comparison**: [Vertex AI vs Mem0](https://caniforkit.com/vs/vertex-ai-vs-mem0)
- **Official Website**: https://mem0.ai/
- **Source Code Repository**: https://github.com/mem0ai/mem0
- **License**: Open Source
- **Runs On**: Self-host
- **GitHub Stars**: 68.5k
- **Maintenance Activity**: nov 2026
- **Supported Platforms**: web, self-hosted, docker to self-host
- **Summary**: Adds persistent, searchable memory to AI agents and apps, so they remember user preferences and past interactions across sessions without pipeline changes.
- **The Catch vs Vertex AI**: Requires self-hosting setup, updates, and server maintenance compared to managed Vertex AI.
- **Installation**: Clone https://github.com/mem0ai/mem0 or deploy with Docker Compose
- **Setup**: Deploy via Docker or binary release from GitHub and configure environment variables.
- **Data Storage**: All application data and configuration live on your own server or local database.

### Beam
- **Fork Page**: [Beam Profile](https://caniforkit.com/fork/beam)
- **Head-to-Head Comparison**: [Vertex AI vs Beam](https://caniforkit.com/vs/vertex-ai-vs-beam)
- **Official Website**: https://www.beam.cloud/
- **Source Code Repository**: https://github.com/beam-cloud/beta9/
- **License**: Open Source
- **Runs On**: Self-host
- **GitHub Stars**: 1.8k
- **Maintenance Activity**: nov 2026
- **Supported Platforms**: web, self-hosted, docker to self-host
- **Summary**: Run GPU inference, task queues, and sandboxes on serverless infrastructure with sub-second cold starts, autoscaling, and support for your own AWS, GCP, or bare metal.
- **The Catch vs Vertex AI**: Requires self-hosting setup, updates, and server maintenance compared to managed Vertex AI.
- **Installation**: Clone https://github.com/beam-cloud/beta9/ or deploy with Docker Compose
- **Setup**: Deploy via Docker or binary release from GitHub and configure environment variables.
- **Data Storage**: All application data and configuration live on your own server or local database.

## Frequently Asked Questions

### What is the best free alternative to Vertex AI?
The top free alternative to Vertex AI is Dify (open source, Open Source). Visual platform for building agentic workflows, RAG pipelines, and LLM-powered apps. Supports hundreds of models, MCP integration, and self-hosted deployment. Other popular Vertex AI replacements include Mem0, Beam.

### How much does switching from Vertex AI to a free alternative save?
Vertex AI starts at $15/month per seat ($180/year). Switching a 5-person team to a free alternative like Dify saves $900 per year in software subscription fees.

### What is the catch when switching away from Vertex AI?
While Dify replaces core Vertex AI features without subscription fees, the real-world trade-off is: Requires self-hosting setup, updates, and server maintenance compared to managed Vertex AI.

## Related

- [ai assistants Software Category Hub](https://caniforkit.com/category/ai-assistant)
- [All Paid SaaS Alternatives Index](https://caniforkit.com/alternatives)
- [Self-Hosted Software Directory](https://caniforkit.com/self-hosted)
- [Homepage](https://caniforkit.com)