NEW Opus 5.5 is INSANE at Building Websites (Full Showcase)

Summary
In this video, presenter Brendan Jowett reviews Anthropic’s newly released Claude Opus 5.5 by having it autonomously build seven complete, complex websites from single prompts. He showcases each website in his browser, detailing the design, interactive animations, custom code-rendered 3D models, token counts, generation times, and API costs.

What is shown

• Showcase dashboard overview [00:49]: A summary screen logging all seven projects built across 6 hours 17 minutes, costing $125.10 in total API fees and generating 112 images using OpenAI’s GPT Image 2.5.
• Solenne (Luxury Cliffside Hotel) [01:04]: A hotel website featuring an interactive room carousel, a time-of-day scroll animation moving from dawn to midnight with dynamic lighting, and an animated illustrated area map.
• Salt Howl (Music Festival) [03:17]: A retro-styled festival site featuring interactive cursor effects, an interactive festival timetable with clash-detection logic, and an interactive schedule-synced map.
• Kalder (Outdoor Apparel E-Commerce) [05:56]: A fashion brand store page featuring generated product imagery, interactive modals, a lookbook carousel, and an interactive global store locator map.
• Kestrel (Finance SaaS Platform) [07:49]: A dark-mode SaaS landing page featuring a live-updating animated financial dashboard, an interactive ROI savings calculator, and a feature changelog carousel.
• Hyperlyte (Sports Drink) [09:49]: A high-energy e-commerce site featuring a fully coded, draggable 3D soda can, interactive scroll-driven flavor transformations, a can explosion splash effect, and a sweat loss calculator.
• Halden (Luxury High-Rise Real Estate) [12:35]: A residential development website with a code-rendered 3D apartment tower, an interactive floor-by-floor availability selector with view and pricing filters, and dusk lighting transitions.
• Kármán (Space Tourism) [14:43]: A spaceflight landing page with a continuous scroll animation simulating rocket launch from pad liftoff, atmospheric exit, Earth orbit with city sodium lighting, and a lunar flyby with flight HUD telemetry.

Claims & numbers

• Anthropic released Claude Opus 5.5, which performs at the level of Claude Fable 5.1 on most work while costing 40% less to run than Opus 5 (shown from Anthropic release announcement at [00:02]).
• The presenter claims web design agencies would charge "tens of thousands of dollars" for comparable bespoke interactive websites [00:19].
• Opus 5.5 built all copy, design, CSS animations, and 3D assets entirely from code without downloading external 3D models [00:23].
• Total showcase metrics: 7 websites, 6h 17m total build time, $125.10 total API cost, 112 GPT Image 2.5 generated images [00:50].
• Specific site build metrics:
  • Solenne: 30m 53s build time, 13.6M tokens, $9.13 cost, 20 images [01:08].
  • Salt Howl: 42m 40s build time, 22.1M tokens, $13.18 cost, 16 images [03:17].
  • Kalder: 40m 58s build time, 20.67M tokens, $11.06 cost, 26 images [06:02].
  • Kestrel: 36m 03s build time, 21.16M tokens, $11.73 cost, 2 images [07:54].
  • Hyperlyte: 1h 08m build time, 46.26M tokens, $22.43 cost, 17 images [09:52].
  • Halden: 1h 09m build time, 39.75M tokens, $22.52 cost, 18 images [12:40].
  • Kármán: 1h 28m build time, 71.52M tokens, $34.23 cost, 13 images [14:52].

Notable quotes

• "Anthropic just released Claude Opus 5.5, their best model yet, and today I'm getting it to build seven websites from scratch..." [00:00]
• "Every website will have a banner pinned to the top showing exactly how long Opus took to build it and what it cost down to the cent." [00:34]
• "The 3D models that it can create are really amazing, so I'm very confident that it was able to fully create this 3D model itself without having to really reference any online examples." [10:09]

Assessment
This is an authentic third-party review and showcase evaluating Claude Opus 5.5's end-to-end web generation capabilities. The presenter tests pre-generated, functioning code running locally in a browser, openly pointing out rendering flaws and visual weaknesses (such as slightly glitchy schedules and unrefined 3D building textures) alongside successful complex logic and animations.

Described by gemini-3.8-flash on 2026-09-29 from the video's audio and frames.