The user wants me to write a blog article in Spanish about market segmentation for marketing professionals. Let me analyze the requirements:

1. Length: 900-1200 words

2. Structure: Compelling intro → 3-4 H2 sections with substantial content → Conclusion with CTA

3. Each H2 section must include a practical prompt with PROMPT: syntax

4. Concrete steps, real tools, specific metrics

5. At least 2 practical examples

6. Dedicated section on common mistakes

7. Updated 2026 data: references to current versions of ChatGPT, Claude, Gemini

Style rules:

- Professional but warm tone

- Perfect Spanish orthography with accents, ñ, ¿, ¡

- No markdown, no HTML

- No self-references

- Varied vocabulary

- Prompts with variables in [brackets]

- Output format: ## [Title], content in paragraphs, PROMPT: [text]

Let me plan the article structure:

Title: Something like "Segmentación de audiencias en 2026: la guía definitiva"

Intro: Hook about why segmentation matters more than ever in 2026 with AI-driven personalization

H2 sections:

1. Por qué la segmentación tradicional ya no funciona (y qué hacer en su lugar) - with prompt

2. El método en 5 pasos para segmentar con IA (ChatGPT, Claude, Gemini) - with prompt

3. Errores comunes al segmentar (y cómo evitarlos) - with prompt

4. De la segmentación a la personalización: métricas que importan - with prompt (or fold this into conclusion)

Conclusion with CTA

Let me count words carefully - need 900-1200 words. Let me write in Spanish.

Let me draft:

Introducción

Content about how in 2026, with AI tools, segmentation has changed. Consumers expect personalization. Static demographics are dead.

Sección 1: Por qué la segmentación tradicional ya no funciona

Talk about demographic segmentation vs behavioral/psychographic. Data points. Mention that 71% of consumers expect personalized experiences (real stat). How AI changed the game.

Prompt
[Describe your business] + [audience data] → generate behavioral segments