Elmo vs Lumen
Elmo is an open-source, self-hostable alternative to Lumen, an AI visibility tracking tool. Both measure how AI answer engines describe your brand, but Elmo ships every line of code, runs on your own infrastructure, and is free to self-host — so your data stays yours and each metric is independently verifiable.
The short version
Lumen doesn't list Claude or Grok among its engines and has no MCP server or sentiment analysis. Elmo has all of that, and it's free to self-host.
Lumen appears to be a very early-stage product with limited adoption.
Elmo
Open-source AEO platform. Self-host for free, forever. Track AI visibility across ChatGPT, Claude, and Google AI Overviews with full transparency.
Lumen
AI visibility tracking with crawler and shopping analytics
About Lumen
Lumen tracks brand visibility across ChatGPT, Perplexity, and Google AI Overview, with dedicated tooling for ChatGPT Shopping and AI crawler analytics. Provides citation tracking, geographic and multi-language coverage, and content generation in higher tiers.
Popularity grade: F
- Dedicated tracking for ChatGPT Shopping product visibility
- AI crawler analytics showing how bots access site content
- Content generation included in Growth tier (5 articles/month)
Feature comparison
| Feature | Elmo | Lumen |
|---|---|---|
| Core Tracking | ||
| Multi-LLM Tracking | Yes | Yes |
| AI Visibility Score | Yes | Yes |
| Citation Analytics | Yes | Yes |
| Competitor Benchmarking | Yes | No |
| Brand Mention Tracking | Yes | Yes |
| AI Engines | ||
| ChatGPT | Yes | Yes |
| Google AI Overviews | Yes | Yes |
| Google AI Mode | Yes | Yes |
| Gemini | Yes | Yes |
| Perplexity | Yes | Yes |
| Microsoft Copilot | Yes | Yes |
| Claude | Yes | No |
| Grok | Yes | No |
| DeepSeek | Yes | No |
| Meta AI | Yes | No |
| Any Model | Yes | No |
| Real UI Answers | Yes | No |
| Bring Your Own Keys | Yes | No |
| Platform | ||
| White-Label / Agency | Yes | No |
| Open Source | Yes | No |
| Content Generation | No | Yes |
| Advanced Analytics | ||
| Prompt Volume Estimates | No | Yes |
| Sentiment Analysis | Yes | No |
| Query Fan-Out | Yes | No |
| AI Crawler Analytics | No | Yes |
| Geographic Tracking | No | Yes |
| Social Media Tracking | No | No |
| Shopping Tracking | No | Yes |
| Multi-Language | No | Yes |
| Actionable Insights | ||
| Action Recommendations | Yes | Yes |
| Content Gap Analysis | Yes | Yes |
| AI Site Audits | No | No |
| AI Keyword Research | Yes | No |
| Reporting & Integration | ||
| Email Alerts | No | No |
| API Access | Yes | Yes |
| TypeScript SDK | Yes | No |
| Python SDK | Yes | No |
| MCP Access | Yes | No |
| BI Connectors | No | No |
We last checked Lumen against its own site in Oct 2026. Spot an error? Suggest a correction or edit the data on GitHub.
Key differences
Only in Elmo
- Competitor Benchmarking
- Claude
- Grok
- DeepSeek
- Meta AI
- Any Model
- Real UI Answers
- Bring Your Own Keys
- White-Label / Agency
- Open Source
- Sentiment Analysis
- Query Fan-Out
- AI Keyword Research
- TypeScript SDK
- Python SDK
- MCP Access
Both offer
- Multi-LLM Tracking
- AI Visibility Score
- Citation Analytics
- Brand Mention Tracking
- ChatGPT
- Google AI Overviews
- Google AI Mode
- Gemini
- Perplexity
- Microsoft Copilot
- Action Recommendations
- Content Gap Analysis
- API Access
Only in Lumen
- Content Generation
- Prompt Volume Estimates
- AI Crawler Analytics
- Geographic Tracking
- Shopping Tracking
- Multi-Language
Why choose Elmo over Lumen?
Open source and transparent
Every line of code is open. You can verify exactly how your visibility data is collected, calculated, and presented. No black boxes.
Self-host for free, forever
Run Elmo on your own infrastructure. The core platform is free and always will be, and Elmo Cloud is there if you would rather not run it yourself.
Your data, in your stack
Pull every metric, sentiment included, into your own code with the REST API and TypeScript and Python SDKs, or ask Claude Code and Cursor about it over MCP. Export, fork, or migrate at any time.
Built to last
Bootstrapped and sustainable. No investors pushing towards dark patterns. We'll outlast the companies taking too much VC money.
Frequently Asked Questions
- What is the difference between Elmo and Lumen?
- Elmo is an open-source, self-hostable AI visibility platform, while Lumen is a closed-source AI visibility tracking tool. Both track how AI answer engines describe your brand, but Elmo gives you the full source code and runs on your own infrastructure, so you can verify every metric and keep your data in-house.
- Is Elmo a free, open-source alternative to Lumen?
- Yes. Elmo is a free, open-source alternative to Lumen. You can self-host the full platform at no cost, read every line of code, and track your AI visibility across ChatGPT, Claude, Perplexity, Gemini, and Google AI Overviews without per-seat or per-prompt fees.
- Is Lumen open source?
- No, Lumen is a hosted product without public source code. Elmo is fully open source, so you can read how each metric is calculated, self-host it on your own infrastructure, and take your data with you.
- How do Elmo and Lumen compare on sentiment analysis, API access, and MCP?
- Elmo includes all three: a 0 to 100 sentiment score for every AI answer that mentions you, a REST API with TypeScript and Python SDKs, and an MCP server so assistants like Claude Code and Cursor can query your data. Lumen offers API access, but we have not found it offering sentiment analysis or an MCP server.
- Can I self-host Elmo instead of Lumen?
- Yes. Elmo is designed to be self-hosted — deploy it on your own infrastructure in minutes with the CLI. You keep full ownership of your data and prompts, with no per-seat pricing and no third-party dashboard holding your visibility history.
Ready to track your AI visibility?
Deploy Elmo in minutes and start monitoring how ChatGPT, Claude, and Google AI Overviews talk about your brand.