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Lettertrace

active Open Source Software + SaaS (Web App)

Monitor how AI talks about your brand

Lettertrace is an open-source, bring-your-own-key AEO/GEO monitoring platform that measures how often brands and competitors appear in AI assistant answers, including visibility, share of voice, prominence, sentiment, and recommendations.

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What is Lettertrace?

Lettertrace is an open-source AI-search visibility monitoring platform designed for companies that want to understand how their brand appears in answers generated by modern AI assistants and answer engines. The platform focuses on Answer Engine Optimization (AEO) and Generative Engine Optimization (GEO) rather than traditional search-engine rankings. Instead of tracking where a website ranks on Google, Lettertrace measures whether AI systems such as ChatGPT, Claude, Gemini, Google AI Overviews, and Perplexity mention, recommend, or cite a brand. Users create a project around a brand or domain and define the topics that potential customers are likely to ask AI assistants about. Lettertrace can then automatically generate realistic variations of those questions, reducing the need to manually create dozens of monitoring prompts. Each monitoring run sends the configured questions to the selected AI models and analyzes the resulting answers. The system detects whether the tracked brand or competitors appear, where they appear in the answer, how frequently they are mentioned, whether they are recommended, and what sentiment is associated with the mention. The resulting data is converted into several AEO/GEO-oriented metrics, including brand visibility, share of voice, prominence, sentiment, competitor presence, and citation/source information.
Software Category Marketing & Advertising
Pricing Model Free + Open Source
Product Type Open Source Software + SaaS (Web App)
Starting Price USD $0.00

Lettertrace Features

✓ Key Feature

Open-source platform with free tier, allowing self-hosting and bring-your-own-key model for cost control

✓ Key Feature

Monitors brand visibility, share of voice, prominence, sentiment, and recommendations across multiple AI assistants including ChatGPT, Claude, Gemini, Google AI Overviews, and Perplexity

✓ Key Feature

Automated question generation reduces manual effort by creating realistic variations of monitoring prompts

✓ Key Feature

Tracks both own brand and competitor mentions in AI-generated responses

Lettertrace Pricing

Billing Model: Free + Open Source
USD $0.00 / starting

Check the official vendor site for volume discounts, regional tiers, and enterprise terms.

View Official Pricing →

Lettertrace Pros and Cons

✓ Key Strengths (Pros)

  • • Open-source platform with free tier, allowing self-hosting and bring-your-own-key model for cost control
  • • Monitors brand visibility, share of voice, prominence, sentiment, and recommendations across multiple AI assistants including ChatGPT, Claude, Gemini, Google AI Overviews, and Perplexity
  • • Automated question generation reduces manual effort by creating realistic variations of monitoring prompts
  • • Tracks both own brand and competitor mentions in AI-generated responses

⚠ Considerations & Limitations (Cons)

  • • No user reviews or ratings available (average_rating: null, review_count: 0), indicating limited community validation
  • • Requires users to bring their own API keys, adding setup complexity and additional cost responsibility
  • • No pricing transparency for SaaS tiers beyond the free/open-source option
  • • Relatively new/unestablished compared to alternatives like Ahrefs and Semrush