HEO methodology · Topic

HEO vs SEO — what's the difference and which should you invest in?

Quick answer

HEO (Hybrid Engine Optimization) is a superset of SEO. SEO targets Google + Bing through 200+ ranking signals. HEO adds AI engine optimisation (ChatGPT, Gemini, Perplexity, Claude) and answer engine work (featured snippets, voice) as integrated tracks. SEO is 8 of the 32 factors in the HEO framework. Pick HEO when you want all four engines optimised together; pick SEO-only when budget forces a single channel.

Target query:“HEO vs SEO”

SEO and HEO are often confused as competing approaches, but they're better understood as concentric circles. SEO is the inner circle — the traditional practice of getting your site to rank on Google and Bing. HEO is the outer circle — the integrated practice of optimising for Google, the four major AI engines (ChatGPT, Gemini, Perplexity, Claude), and answer surfaces (featured snippets, voice, AI Overviews) as one workflow. SEO is one component of HEO; HEO includes everything SEO covers plus 24 additional factors that standard SEO retainers don't touch. This page explains the structural difference, when each makes sense, and why the 2026 economic case typically favours HEO for buyers who can afford the slightly higher retainer.

What SEO actually covers (and what it doesn't)

Traditional SEO targets Google Search and Bing. The work breaks into four categories: technical health (crawlability, Core Web Vitals, schema markup, sitemap), on-page content (title tags, headings, content depth, semantic intent matching), off-site authority (backlinks, brand mentions, citations), and local signals (Google Business Profile, NAP citations, reviews). The 200+ ranking signals Google uses all map to one of these four categories. Done well, SEO compounds — pages keep ranking for 12-24 months after the active work stops. What SEO does NOT cover: AI engine visibility (ChatGPT, Gemini, Perplexity, Claude citation), answer engine work (featured snippets, voice answers, AI Overviews), brand entity recognition for AI knowledge graphs (Wikidata, Wikipedia stub-entries), definitive content infrastructure (glossary clusters, /llms.txt files, comparison content), and ongoing AI citation tracking. These 24 additional factors are what makes HEO different from SEO.

What HEO adds on top

HEO adds three additional optimisation tracks. GEO (Generative Engine Optimization) targets ChatGPT, Gemini, Perplexity, and Claude — making your brand citable when users ask category questions in AI assistants. Work covers /llms.txt deployment, FAQPage schema, DefinedTerm markup, Wikidata QID submission, original research with citable statistics, and AI engine citation tracking. AEO (Answer Engine Optimization) targets featured snippets, People Also Ask, voice queries, and AI Overviews. Work covers question-first content structuring, Speakable schema, conversational content, and short-form answer blocks embedded in long-form pages. Brand-entity work targets the knowledge-graph signals AI engines use to disambiguate brands — sameAs links, third-party directory listings (G2, Clutch, IAMAI), Wikipedia eligibility where applicable. The integration matters: one schema deployment powers Google rich results + AI engine extraction + voice answers simultaneously. One /llms.txt file declares brand identity for all AI crawlers. One FAQPage block feeds Google FAQ accordion + ChatGPT extraction + voice answers. The shared infrastructure is why HEO costs roughly the same as a deep SEO retainer despite covering four engines instead of one.

The economic comparison (Kerala 2026)

Standalone SEO retainers in Kerala range ₹25,000-1,50,000 per month depending on scope. Adsomia's SEO standalone retainer is ₹55,000 per month founding offer (₹95,000 list). The HEO retainer bundling SEO + GEO + AEO + Local SEO together is ₹98,000 per month founding offer (₹1,50,000 list). The HEO retainer is roughly 1.8x the cost of SEO-only but covers four engines instead of one — the per-engine cost actually drops by 45%. Running SEO + GEO + AEO as three separate retainers typically costs ₹1.5-2 lakh per month total because each retainer has its own overhead. The unit economics favour HEO bundling significantly. For Kerala SMBs with ad budget under ₹50,000 per month, the startup tier (₹25,000/month) covers a scoped-down version of the HEO retainer — sufficient for businesses under ₹50 lakh revenue or under 2 years old. The honest threshold for SEO-only: if 100% of your buyer queries happen on Google and AI engine influence on your category is genuinely zero (rare in 2026), SEO-only is acceptable. Most categories no longer fit this profile.

When SEO-only is the right call

Three scenarios. (1) Pure transactional categories where buyers always Google a specific product or service ('plumber Trivandrum', 'food delivery near me') — AI engine consideration-stage research is minimal, SEO captures the demand. (2) Very narrow local categories where the entire buyer journey happens on Google Maps + local pack — AI engines don't materially influence the decision. (3) Budget-constrained engagements where the choice is SEO-only or nothing — SEO alone still produces real ROI even without the additional 24 HEO factors. For everything else (B2B services, SaaS, high-consideration consumer purchases, professional services), HEO outperforms SEO-only because the consideration-stage research increasingly happens in AI engines. The 2026 default recommendation: HEO retainer for businesses where buyer research is multi-stage; SEO-only for businesses where buyer queries are purely transactional.

Key takeaways

In short.

SEO is 8 of the 32 factors inside the HEO framework — HEO is a superset, not a competitor.
Standalone SEO retainers in Kerala cost ₹25K-1.5L per month; HEO retainer with all 4 engines costs ₹98K founding (roughly 1.8x SEO for 4x the engine coverage).
Running SEO + GEO + AEO as three separate retainers typically costs ₹1.5-2L per month — bundled HEO is 30-50% cheaper.
SEO-only works for purely transactional or hyper-local categories where AI engine influence is minimal.
HEO outperforms SEO-only for B2B, SaaS, professional services, and any category where buyer research is multi-stage.

Common questions

FAQs.

Will SEO become obsolete?

No. Google still drives ~60% of search-style queries in 2026 and remains valuable for its share. SEO is one of four tracks inside HEO; it doesn't go away — it gets integrated with three other tracks.

Can I do HEO without an SEO foundation?

Not effectively. The 8 SEO Foundation factors in the HEO framework (crawlability, Core Web Vitals, schema, sitemap, etc.) are prerequisites for the other 24 factors to work. AI engines partially weight Google authority in their retrieval, so good SEO is also indirect GEO leverage.

How do I migrate from SEO-only to HEO?

Start with an HEO audit (Adsomia's ₹1.25L founding offer) to baseline your current score across all 32 factors. Most SEO-strong sites score 65-80 on the SEO foundation and 20-40 on the AI/GEO and AEO factors. The roadmap typically prioritises /llms.txt, FAQPage schema, and brand-entity work for the first 90 days.

Is HEO worth the higher retainer cost?

If your buyers research via AI engines (true for most B2B and high-consideration B2C in 2026), yes. The category-level visibility lift typically pays back the cost differential within 90-120 days. If your buyers are purely transactional (local services, immediate-need purchases), SEO-only is acceptable.

Does HEO replace SEO agencies?

It replaces SEO-only agencies that won't expand into the additional 24 factors. SEO agencies that have already added GEO and AEO capabilities effectively are running HEO under a different name. The senior practice migration is one-way: agencies that stay SEO-only will struggle to retain clients as AI engine traffic grows.

Can my in-house team run HEO?

Yes if you have a senior generalist with 5+ years SEO + technical content + schema experience and they're willing to invest in learning GEO factors. The framework is published openly at adsomia.com/methodology/heo-audit. Adsomia's HEO Audit & Roadmap (₹1.25L) gives the in-house team a written 32-factor audit + 90-day roadmap.

Want HEO shipped on your site?

The HEO Audit & Roadmap (₹1.25L founding) gives you a written 32-factor audit, a 60-min walkthrough, and a 90-day execution roadmap. Or the Be Found Sprint (₹98K/mo founding) ships the full HEO programme on your site.

See the HEO Audit Or the Be Found Sprint