The DecaGEO Blog
Insights & Playbooks
Weekly data on the brands AI recommends — and the playbooks behind the rankings.
HubSpot Sales Hub vs Agentforce Sales: Which CRM Does ChatGPT Recommend More? (2026)
ChatGPT recommends HubSpot Sales Hub more often, but names Agentforce Sales (Salesforce's CRM) #1 more decisively. DecaGEO's CRM data on breadth vs conviction.
Zendesk vs Intercom: Which Help Desk Tool Does ChatGPT Recommend More? (2026)
ChatGPT recommends Zendesk far more than Intercom for help desk — 80% vs 28% of responses, and Intercom is never named #1. Inside DecaGEO's data.
Klaviyo vs Mailchimp: Which Email Marketing Tool Does ChatGPT Recommend More? (2026)
ChatGPT mentions Klaviyo and Mailchimp equally, but ranks Klaviyo far higher — Mailchimp is never named #1. Inside DecaGEO's email marketing data.
ClickUp vs Asana: Which Project Management Tool Does ChatGPT Recommend More? (2026)
ChatGPT ranks ClickUp #2 and Asana #3 for project management — ClickUp leads most metrics, but Asana edges the head-to-head. Inside DecaGEO's 3-way race.
Asana vs monday.com: Which Does ChatGPT Recommend More for Project Management? (2026)
ChatGPT ranks monday.com #1, ClickUp #2, Asana #3 for project management — yet Asana is mentioned more often. Inside DecaGEO's 3-way AI recommendation race.
SEO Tools Built Empires on Google. GEO Tools Are Building Theirs Inside AI
We compared AI recommendation data for SEO (57 brands) and GEO (147 brands). Only 15 brands appear in both — an overlap of 26.3%. 70% of GEO's top 20 are brands that don't exist in SEO rankings. This cross-category analysis reveals how AI draws boundaries between related software categories
GEO Tools AI Visibility Nearly Doubled: 26% to 44% in 8 Weeks
GEO Tools had the highest AI Visibility Rate among 10 tracked SaaS categories at 43.5%, with 3 #1 brand changes and 342 new-entry events over 8 weeks.
Do Semrush & Ahrefs Have llms.txt? SEO vs GEO Top 5
DecaGEO scanned the SEO and GEO Top 5 AI-recommended products for llms.txt. Semrush and Ahrefs don't have it; most GEO tools do. One brand ranks in both.
GEO Strategy Depends on Category Structure: Why the Same Playbook Produces 2× Different Results
The same GEO checklist can produce very different results depending on category structure. We compare CRM and Email Marketing to show how AI Visibility Rate, Gini coefficient, and DECA concentration determine GEO ROI.
Project Management AI Rankings: All 5 Top Brands Have llms.txt — But #1 Changed 3 Times
DecaGEO tracked 3 different #1 AI-recommended Project Management brands in 3 weeks and audited the GEO assets behind the top 5 brands, from llms.txt to MCP-related AI agent documentation.
Profound Drops 66.7% in AI Mentions (Apr 26)
Profound just lost 66.7% of its AI mentions in 7 days. Semrush jumped 6 ranks to #1. See this week's GEO ranking and why AI visibility shifts weekly.
AI Visibility Has Two Filters: Why 91.6% of Software Brands Never Get Recommended
AI recommendations have two filters most brands don't know about. The first eliminates 91.6% of products. The second concentrates attention among the survivors. We measured both across 10 categories — and mapped which markets are locked and which are still open.
Semrush vs Ahrefs: Which Does ChatGPT Recommend More? (2026)
In DecaGEO's June 2026 data, ChatGPT recommends Semrush over Ahrefs for SEO — named #1 4× more often. See the data, the on-page and citation evidence, and what your brand can learn.
8 Weeks of AI Recommendations: 5 of 10 Markets Changed
DecaGEO tracked 4,123 AI recommendation data points across 10 SaaS categories for 8 weeks. Five changed their #1 brand, most after GPT-5.5.
Readable Is Not Recommended: What 8 #1 AI-Recommended Products Actually Have
DecaGEO scanned 8 #1 AI-recommended products for three technical GEO setups. Only one had all three measured setups — suggesting these files are not prerequisites for #1 AI recommendation rankings.
Influencer Marketing GEO Patterns: What Top AI-Recommended Brands Skip
8 weeks of DecaGEO data show how Influencer Marketing AI recommendations concentrated, which visible GEO assets top brands have, and which common tactics are mostly absent.
CRM AI Rankings Show Four GEO Paths in One Week
DecaGEO scanned all 34 CRM products for llms.txt. Close surged 6 spots with competitive positioning in its file. Capsule surged 5 without one. Daylite entered the chart with 15K words of docs. The #1 product has none.
AI CRM Rankings (Apr 26, 2026): HubSpot Holds #1, Microsoft Passes Zoho
This week's AI CRM ranking on ChatGPT: HubSpot #1 with a 100.0 DECA Score, Salesforce #2, Microsoft #3. See what AI recommends for CRM, refreshed weekly.
The Category-First GEO Playbook: 30/90-Day Strategies for Monopoly, Oligopoly, and Distributed Markets
GEO strategy should start with category structure, not a universal checklist. This playbook maps Monopoly, Oligopoly, and Distributed AI recommendation markets into specific 30-day and 90-day action plans, success metrics, and common mistakes.
GEO Opportunity Depends on Category Openness: 4 AI Recommendation Markets Are Still Open, 6 Are Already Closed
AI recommendation windows are closing at different speeds by category. We classify 10 software categories using Gini coefficients and AI Visibility Rates to show where GEO opportunity is still open — and where standard GEO playbooks now face structural limits.
AI Ranking Movers — Week of June 14
This week in ChatGPT's software recommendations: Agentforce Marketing surged +22.6, HubSpot Sales Hub climbed in CRM, and the tracked set widened to 473 brands.
AI Ranking Movers — Week of June 7
This week in AI rankings: HubSpot AEO surged 43 spots in GEO, Claude entered the AI Writing Top 10, and local-SEO tools climbed. See every category's risers, drops, and new entries.
The Technical Retrofit: How to Structure Legacy Content for AI Search
Learn the 3-step technical retrofit process to make legacy content AI-readable. Master semantic HTML, summary boxes, and schema markup for GEO(Generative Engine Optimization).
Getting Started with GEO: 5 Steps to AI Search Visibility
Ready to rank in AI search? Follow this 5-step GEO(Generative Engine Optimization) roadmap. From content audit to entity optimization, learn exactly how to make your brand visible on Perplexity and Google SGE.
DecaGEO — Open Rankings for AI Search Brand Visibility
DecaGEO publishes open category rankings for brand visibility in AI search and provides actionable insights to improve those rankings. Try free.
Why Open Rankings Matter
Private dashboards track your brand. Open Rankings show what AI actually sees — the full category. Here's why that difference changes everything for GEO.
Why Google Loves Reddit & How Brands Can Win
Reddit ranks because your content is missing. Learn the Content Void theory and how to reclaim your brand authority using DECA's Target Prompt strategy.
The Spoke Strategy: Amplifying Authority via Medium & LinkedIn
Don't just copy-paste. Learn how to syndicate content on Medium and LinkedIn using canonical tags to boost your domain authority without SEO penalties.
Schema Markup Injection: How to Add Speakable, FAQ, and Article Schema to Legacy Content
Learn how to inject Article, FAQPage, and Speakable schema markup into existing content to boost AI visibility, secure direct answers, and optimize for voice search without rewriting.
List & Table Formatting: AI-Friendly Content with DECA GEO
Transform unstructured text into AI-friendly lists & tables. Learn GEO best practices with DECA to optimize content for Featured Snippets, AI answers, and machine readability.
Entity Optimization: The Foundation of GEO Strategy
Move beyond keywords. Learn how Entity Optimization helps AI models recognize your brand as a distinct authority using the Knowledge Graph and JSON-LD.
2026 GEO Market Radar: A Strategic Roadmap for Digital Leaders | DECA
Go beyond SEO to GEO (Generative Engine Optimization). Discover 'Share of Model' the new success metric for the AI search era and a 3-step execution strategy for enterprises.
The Summary Box Tactic: Optimize for AI Direct Answers & LLM Citation
Learn how to craft effective summary boxes using details tags and FAQPage schema to boost AI search visibility, secure direct answers, and enhance LLM citation for your content. A practical guide for Generative Engine Optimization.
How Tally.so Gained 9.6% Traffic from ChatGPT
Discover how Tally.so reached $4M ARR and a 9.6% traffic share via ChatGPT. Learn the 3-step Generative Engine Optimization (GEO) strategy to replicate their success.
Why Your Domain Must Be the Source of Truth: Technical Authority in GEO
AI cites sources it trusts. Learn why owning your domain is critical for Generative Engine Optimization and how to establish technical authority using Schema and Entity validation.
The OSMU Workflow: Repurposing Content for AI Visibility
Transform one asset into five AI-ready signals. Learn the One Source Multi Use strategy that leverages structured data, tables, and Q&A formats to dominate Generative Engine results.
The Context Lock Protocol: How to Force AI Citations
Stop AI hallucinations. Learn the Context Lock Protocol—a 4-step formatting strategy (BLUF, Semantic HTML) to ensure ChatGPT and Perplexity quote your content accurately.
Header Restructuring: Converting Creative Headers into Question-Based H2s for AI Parsing
Learn how to convert creative, abstract headers into clear, question-based H2s to boost AI parsing, secure Featured Snippets, and align with Generative Engine Optimization (GEO) principles.
Medium vs. Website: The GEO Distribution Strategy for 2025
Stop giving away your authority. Discover how to build a content ecosystem that prioritizes your domain as the Source of Truth while using platforms to amplify AI signals.
What is GEO? The Definitive Guide
What is GEO? It’s your second chance at search visibility. Move beyond backlinks and domain authority learn how to build Answer-Ready Content that AI engines prefer and quote
The 3 Pillars of GEO: Trust, Context, and Structure
A deep dive into the core methodology of Generative Engine Optimization. Learn how to optimize for Trust (Authority), Context (Semantics), and Structure (Machine Readability).
Target Prompt Reverse-Engineering: Beyond Keywords for GEO
Stop optimizing for keywords. Learn to reverse-engineer user prompts and master the 'Query Fan-Out' mechanism to capture traffic from ChatGPT and Gemini.
