# Sill — AI Visibility Analytics & GEO Platform

> Sill helps brands understand how AI engines (ChatGPT, Perplexity, Gemini, Claude, Grok, Google AI Overviews) perceive and recommend them. The platform provides AI Share of Voice monitoring, counterfactual experimentation, citation analysis, and actionable GEO recommendations.

## Company

- Name: Sill
- Website: https://trysill.com
- App: https://app.trysill.com
- API: https://api.trysill.com
- Documentation: https://docs.trysill.com
- Founded: 2025
- Founder: Daniel Wang (UC Berkeley MIDS)

## What Sill Does

Sill is a B2B SaaS platform for AI search analytics. It monitors how AI engines recommend brands by querying the actual chat interfaces of ChatGPT, Gemini, Perplexity, and Google AI Overviews with purchase-intent prompts, then scoring each response for Share of Voice on a 0-100 scale.

### Core Products

1. **Monitor** — Daily AI Share of Voice tracking across 6 platforms (ChatGPT, Gemini, Perplexity, Google AI Overviews, Claude, Grok). Tracks competitor rankings, citation sources, and sentiment.
2. **Analyze** — Citation source analysis, sentiment patterns, perception gaps, and Defend/Grow/Aspire entity classification.
3. **Experiment** — Rigorous A/B testing for GEO: within-brand query controls, hierarchical Bayesian estimation, placebo-calibrated confidence to prove whether content changes actually improved AI visibility.

### Key Differentiators

- Queries actual chat interfaces (not developer APIs that skip web search/RAG)
- Cross-platform monitoring (most tools track only one platform)
- Statistical experimentation engine (the only platform that proves GEO changes worked)
- Built on peer-reviewed research from Princeton, CMU, UC Berkeley, and University of Toronto

## Pricing

- Free: One-time AI perception scan
- Basic ($90/month): Daily monitoring, competitive benchmarking, citation tracking
- Pro ($225/month): Full analytics, experimentation engine, GEO recommendations, priority support

## Research & Data

Sill has published original research based on 182 AI visibility analyses across 139 brands and 86 industries:
- 23% of brands score zero SOV across all platforms (completely invisible to AI)
- Median SOV is 15 out of 100
- 55% of brands have a 10+ point SOV spread between their best and worst platform
- 91.6% of cited URLs appear on only one platform
- YouTube is the #1 cited source by 8x (674 citations, 14.0 per page)
- Pages with 19+ statistics earn 93% more AI citations than pages without

## Solutions

- **AEO Teams**: AI search analytics for Answer Engine Optimization practitioners
- **PR & Brand Teams**: AI brand narrative intelligence, sentiment monitoring, hallucination detection
- **Agencies**: Multi-brand monitoring and competitive benchmarking for client portfolios

## Pages

- Home: https://trysill.com
- Pricing: https://trysill.com/pricing
- Blog: https://trysill.com/blog
- Monitor: https://trysill.com/product/monitoring
- Analyze: https://trysill.com/product/analyze
- Experiment: https://trysill.com/product/experimentation
- AEO Teams: https://trysill.com/solutions/startup
- PR & Brand Teams: https://trysill.com/solutions/enterprise
- Agencies: https://trysill.com/solutions/agency
- Team: https://trysill.com/team
- Careers: https://trysill.com/careers
- Contact: https://trysill.com/contact
- Manifest: https://trysill.com/manifest

## Blog (Recent Posts)

- Best AI Visibility Platform for Your Brand in 2026: https://trysill.com/blog/ai-visibility-platform-comparison-2026
- How to Measure AI Search ROI: A Framework for Marketing Teams: https://trysill.com/blog/ai-search-roi-framework
- 45 Billion Sessions a Month: AI Search Outgrew Its Measurement Stack: https://trysill.com/blog/ai-search-outgrew-measurement
- The LLM Visibility Measurement Playbook: https://trysill.com/blog/llm-visibility-measurement-playbook
- The AI Search Attribution Gap: https://trysill.com/blog/ai-search-attribution-gap
- Everyone's Selling GEO Monitoring. Nobody Can Prove It Works.: https://trysill.com/blog/geo-proof-gap
- We Analyzed 139 Brands Across 86 Industries. 23% Are Completely Invisible to AI.: https://trysill.com/blog/ai-visibility-benchmark
- Your Brand Has a Different Reputation on Every AI Platform: https://trysill.com/blog/platform-divergence

## Contact

- Email: daniel@trysill.com
- LinkedIn: https://www.linkedin.com/in/daniel-wang-/