Sill vs SearchPilot: GEO Experimentation Compared
Read the postDateApr 5, 2026
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Conductor published the 2026 AEO/GEO Benchmarks Report analyzing 3.3 billion sessions across 13,000+ domains, finding that ChatGPT drives 87.4% of AI referral traffic. Their platform serves Fortune 500 companies at $30K-$200K/yr with Visibility Heatmaps, Brand Visibility Rank, and deep enterprise integration. Sill starts free with all 6 AI platforms and is building GEO experimentation with statistical controls. These tools serve fundamentally different market segments: Conductor is built for the largest organizations with dedicated analytics teams; Sill is built for everyone else.
TL;DR
Conductor ($30K-$200K/yr) is an enterprise AEO platform that published the 2026 AEO/GEO Benchmarks Report analyzing 3.3 billion sessions across 13,000+ domains, finding that ChatGPT drives 87.4% of AI referral traffic and 97% of enterprise digital leaders say AEO is delivering impact. Their platform serves Fortune 500 companies with Visibility Heatmap, Brand Visibility Rank, content intelligence, and deep enterprise integration. Sill (Free-$225/mo) includes all 6 AI platforms (ChatGPT, Perplexity, Gemini, AI Overviews, Claude, Grok) at every tier, including the free plan, and is building GEO experimentation with statistical controls, per-platform models, and calibration for false positive rates. Sill has generated 748 GEO recommendations (87% on-site) and provides Brand Watchdog for factual accuracy monitoring. These serve fundamentally different market segments: Conductor for Fortune 500 with dedicated analytics teams and enterprise procurement; Sill for everyone else who wants experimentation at accessible pricing. Conductor is observation at enterprise scale; Sill is experimentation for the mid-market.
Conductor is an enterprise AEO platform with 3.3B sessions analyzed across 13K+ domains; Sill is mid-market GEO experimentation starting from a free tier.
Conductor ($30K-$200K/yr) is an enterprise SEO and AEO (Answer Engine Optimization) platform that has been in the market for over a decade. Their 2026 AEO/GEO Benchmarks Report is the largest published study of AI referral traffic, analyzing 3.3 billion sessions across 13,000+ domains. The headline finding: ChatGPT drives 87.4% of AI referral traffic, with AI referrals representing approximately 1% of total site traffic across the dataset. Conductor serves Fortune 500 companies and large enterprises with dedicated analytics teams. Their platform includes Visibility Heatmap, Brand Visibility Rank, content intelligence, and deep integrations with enterprise tech stacks.
Sill (Free-$225/mo) is building GEO experimentation: the ability to measure whether a specific content change caused an AI visibility shift, rather than observing that visibility changed over time. All 6 AI platforms (ChatGPT, Perplexity, Gemini, Google AI Overviews, Claude, Grok) are included at every pricing tier. Sill also provides GEO recommendations (748 generated, 87% on-site), Brand Watchdog for factual accuracy monitoring, and daily SOV tracking.
The gap between these products is not quality; it is market segment. Conductor is built for organizations that spend $30K-$200K/yr on a single visibility platform and have dedicated teams to use it. Sill is built for teams that need the same class of AI visibility intelligence at a price point three orders of magnitude lower, with experimentation capabilities that Conductor does not offer.
Conductor's 2026 Benchmarks Report found ChatGPT drives 87.4% of AI referral traffic; 97% of enterprise digital leaders say AEO is delivering impact.
The 2026 AEO/GEO Benchmarks Report is the most comprehensive public analysis of AI referral traffic patterns. The study analyzed 3.3 billion sessions across 13,000+ domains and found that ChatGPT drives 87.4% of AI referral traffic, with Perplexity, Gemini, and Claude splitting the remainder. The report also found that 97% of enterprise digital leaders say AEO is delivering impact, though it notes that AI referrals still represent approximately 1% of total traffic. This data is valuable context for any team allocating budget between traditional SEO and GEO.
Visibility Heatmap and Brand Visibility Rank provide enterprise-scale observation of how AI engines surface brands across categories and queries. These features visualize where a brand appears, where competitors appear, and how those positions shift over time. For Fortune 500 teams managing hundreds of product lines and thousands of category queries, this level of structured observation is necessary for operational decision-making.
Deep enterprise integration is Conductor's other advantage. Their platform connects to enterprise content management systems, analytics stacks, and workflow tools in ways that a newer, smaller tool cannot. For organizations with existing Conductor deployments (many large enterprises have used Conductor for traditional SEO for years), adding AI visibility monitoring to an existing workflow is a natural extension rather than a new vendor evaluation.
Conductor starts at $30K/yr for enterprise teams; Sill starts free with 6 AI platforms. These serve fundamentally different market segments.
Conductor's pricing is based on enterprise contract structures and varies significantly by scope, domain count, and integration requirements. The range below reflects publicly available estimates as of April 2026.
| Dimension | Conductor | Sill |
|---|---|---|
| Pricing | $30K-$200K/yr | Free-$225/mo ($0-$2,700/yr; Enterprise custom) |
| Target market | Fortune 500, large enterprise | SMB to mid-market |
| Minimum commitment | $30K/yr (annual contract) | $0 (free tier available) |
| AI platforms | Enterprise suite (scope varies by contract) | 6 included at every tier (ChatGPT, Perplexity, Gemini, AI Overviews, Claude, Grok) |
| Experimentation | None (observation only) | Statistical controls with per-platform models |
| GEO recommendations | Content intelligence (enterprise workflow) | 748 generated, 87% on-site, codex-ranked |
| Unique data | 3.3B sessions across 13K+ domains; 87.4% ChatGPT share finding | Brand Watchdog + experimentation engine |
| Enterprise integration | Deep (CMS, analytics, workflow tools) | API on roadmap |
| Factual accuracy monitoring | Brand Visibility Rank (visibility, not accuracy) | Brand Watchdog (verified fact profile) |
| Free tier | No | Yes (5 prompts, 6 platforms) |
Conductor for Fortune 500 with dedicated analytics teams and enterprise procurement; Sill for everyone else who wants experimentation at accessible pricing.
Choose Conductor if you are a Fortune 500 or large enterprise with a dedicated analytics team, an existing enterprise SEO workflow (especially if you already use Conductor for traditional SEO), and the budget for a $30K-$200K/yr platform. Conductor's Benchmarks Report, deep integration capabilities, and Visibility Heatmap are built for organizations that operate at scale with structured procurement processes. If your team manages hundreds of product lines across thousands of queries, Conductor's observation infrastructure is designed for that scope.
Choose Sill if you need AI visibility monitoring and experimentation but do not have an enterprise budget. Sill's free tier provides multi-platform monitoring that would cost $30K+ on Conductor. If you need to measure whether content changes caused visibility shifts rather than simply observing that shifts happened, Sill's experimentation engine with statistical controls is the only option in the GEO market, regardless of price tier. If you are mid-market ($1M-$50M revenue) and need to start monitoring AI visibility before committing significant budget, Sill's free tier removes the procurement barrier entirely.
These tools serve fundamentally different market segments. Conductor is not overpriced for what it delivers to Fortune 500 teams; the integration depth, data scale, and enterprise support justify the cost for organizations that need those capabilities. Sill is not a cheaper Conductor; it is a different product category (experimentation vs. observation) at a different price point for a different buyer. For the full landscape of GEO testing and experimentation tools, see our comprehensive comparison.
Sill's free tier includes all 6 AI platforms, GEO recommendations, and Brand Watchdog. Experimentation requires 25+ prompts, available from the $90/mo Basic plan.
Request your first analysis today to see where you stand.