{"slug": "vibe-coding-won-t-replace-web-agencies-but-it-will-replace-lazy-ones", "title": "Vibe Coding Won't Replace Web Agencies. But It Will Replace Lazy Ones.", "summary": "Celestia Studio, a Webflow agency based in southern France, rebuilt four AI-generated websites from scratch after clients reported zero Google indexing, no Schema.org markup, and Lighthouse scores under 60. The agency found that AI-built sites consistently score 45 to 65 out of 100 on performance benchmarks, compared to 85 to 95 for a properly optimized Webflow site, and lack critical SEO and GEO structures needed for modern search and AI visibility. One rebuilt site went from zero to three Google Featured Snippets in two weeks on a three-month-old domain with no backlinks, demonstrating that revenue-generating websites require strategic architecture, not just visual output.", "body_md": "Originally published on Medium — celestia-studio.fr\n\nI've rebuilt 4 AI-generated websites from scratch. Here's exactly what broke.\n\nIn February 2025, Andrej Karpathy, OpenAI co-founder, posted on X: \"There's no coding, only vibes.\"\n\nVibe coding was born. Since then, thousands of entrepreneurs have tested tools like Bolt.new, Framer AI, or Durable to build their website in under 30 minutes, no developer needed.\n\nThe visual results? Often impressive. The business results? Usually terrible.\n\nI run [Celestia Studio](https://www.celestia-studio.fr/), a Webflow agency based in the south of France. In the last 6 months, 4 clients came to us after trying AI website builders. Every single one had the same problems. Here's what I found.\n\nLet's be honest. These tools are genuinely useful in specific situations.\n\nValidating an idea fast is the obvious one. Durable.co generated over **1 million websites** since its 2023 launch. That's real demand for speed. Temporary landing pages work too: product launches, webinar sign-ups, event pages where SEO doesn't matter and the page disappears in two weeks. Same for personal portfolios with no conversion goals, or internal prototypes you're showing to investors before committing to a full build.\n\nFor these use cases, vibe coding is a legitimate tool and a real time-saver.\n\nHere's where every AI-built site I've reviewed breaks down.\n\n**SEO structure**. AI builders generate pages that look professional but are structurally broken for search engines. On 10 AI-built sites reviewed by SEO experts in 2025, **9 had critical structural errors** preventing proper indexing. The pattern is always the same: multiple H1 tags on a single page, generic or duplicated meta descriptions, no alt text on images, zero internal linking, non-optimised URLs. Google sees none of what actually matters.\n\nCore Web Vitals. Google has included performance in its ranking algorithm since 2021. AI-built sites consistently score **45 to 65 out of 100** on Lighthouse. A properly optimised Webflow site scores **85 to 95**. A site that loads in more than 3 seconds loses **32% of visitors** before they read a single line of content (Google, 2024).\n\nConversion. The average conversion rate of a professionally optimised website sits between 2 and 5%. The average for an unoptimised AI site is **under 1%**. On 1,000 monthly visitors, that's the difference between 10 and 50 leads. Forty potential clients lost every month. AI tools place buttons. A conversion expert places arguments.\n\n**GEO, the layer nobody talks about**. This is the one costing businesses the most in 2026. [GEO (Generative Engine Optimization)](https://www.celestia-studio.fr/blog/geo-referencement-ia-2026) is the practice of structuring your content so AI systems like ChatGPT, Perplexity, and Google AI Overviews can extract and cite your business in their answers. It requires Schema.org markup, structured data, and content formatted for extraction. AI website builders don't implement any of this. Sites without proper Schema.org have **40% less chance** of appearing in generative AI answers (Princeton / Georgia Tech, 2023). For any local business trying to get recommended by AI in 2026, that's a structural disadvantage baked in from day one.\n\nEach one came to us after 3 to 6 months online with an AI-built site. Zero Google indexation. No Schema.org. Lighthouse under 60. No leads.\n\nWe rebuilt each site on [Webflow](https://www.celestia-studio.fr/blog/creation-site-web-webflow-guide-complet), kept the visual direction they liked, and added the strategic layer that was missing: SEO architecture, Schema.org, GEO optimisation, conversion structure.\n\nOne of them went from **0 to 3 Google Featured Snippets in 2 weeks** on a 3-month-old domain, with zero backlinks. The content was just structured correctly from the start\n\nAsk yourself one question: does my website need to generate revenue?\n\nIf yes, you need a strategy, not just a visual. An AI tool builds the shape. An agency builds the engine.\n\nIf your site is a test, a placeholder, or a personal portfolio with no commercial stakes, vibe coding is fine. Genuinely.\n\nBut if 40 lost leads per month is a number that matters to your business, the maths on a professionally built site are straightforward.\n\nEnzo Marcelle is the founder of [Celestia Studio](https://www.celestia-studio.fr/), a Webflow agency specialising in SEO and GEO optimisation. Based in Agde, France", "url": "https://wpnews.pro/news/vibe-coding-won-t-replace-web-agencies-but-it-will-replace-lazy-ones", "canonical_source": "https://dev.to/celestia_studio/vibe-coding-wont-replace-web-agencies-but-it-will-replace-lazy-ones-1lfd", "published_at": "2026-06-06 20:46:40+00:00", "updated_at": "2026-06-06 21:11:08.033330+00:00", "lang": "en", "topics": ["ai-tools", "ai-startups", "generative-ai", "ai-products"], "entities": ["Andrej Karpathy", "OpenAI", "Bolt.new", "Framer AI", "Durable", "Celestia Studio", "Webflow"], "alternates": {"html": "https://wpnews.pro/news/vibe-coding-won-t-replace-web-agencies-but-it-will-replace-lazy-ones", "markdown": "https://wpnews.pro/news/vibe-coding-won-t-replace-web-agencies-but-it-will-replace-lazy-ones.md", "text": "https://wpnews.pro/news/vibe-coding-won-t-replace-web-agencies-but-it-will-replace-lazy-ones.txt", "jsonld": "https://wpnews.pro/news/vibe-coding-won-t-replace-web-agencies-but-it-will-replace-lazy-ones.jsonld"}}