# FreeSOV
 
> FreeSOV is a free AI share-of-voice (SOV) tracking tool. It measures how often ChatGPT, Claude, Gemini, Perplexity, and Google AI Overviews cite, mention, and rank a brand in their answers — and which sub-queries each model fans a prompt out into. Users bring their own LLM provider and/or DataForSEO API keys, so there is no per-seat cost.
 
FreeSOV reports a rolling Visibility Score (the percentage of AI executions where a brand appeared), per-source citation vs. mention share, query fan-out, auto-discovered competitors, sentiment per mention, and per-source API cost. It is open source under the Polyform Noncommercial 1.0.0 license. Setup to first report takes under ten minutes.
 
Tracked AI surfaces and how they are queried:
- Google AI Overviews — via DataForSEO SERP
- ChatGPT — via the OpenAI Responses API or DataForSEO LLM
- Claude — via the Anthropic Messages API or DataForSEO LLM
- Gemini — via the Google generative-language API or DataForSEO LLM
- Perplexity — via the Perplexity API or DataForSEO LLM
 
## Main pages
 
- [Home / overview](https://freesov.com/): What FreeSOV is, the features, and how it works end to end.
- [Create an account](https://freesov.com/register.php): Free signup — add a brand and paste in your DataForSEO or direct provider keys.
- [Sign in](https://freesov.com/login.php): Existing-user login.
 
## Structured data
 
- [EntityMap (JSON)](https://freesov.com/entitymap.json): Machine-readable, entity-first index of FreeSOV's content for AI agents and RAG pipelines (EntityMap v1.0 spec).
- [EntityMap (HTML)](https://freesov.com/entitymap.html): Human- and crawler-readable view of the same index.
 
## Optional
 
- [EntityMap specification](https://entitymap.org/spec/v1.0): The open standard the structured-data files above conform to.