Claude Fable 5: 10 Projects That Revolutionized the Understanding of AI Capabilities
On June 9, 2026, Anthropic publicly released Claude Fable 5 — a Mythos-class model, the most powerful in the company's lineup, surpassing even Claude Opus in capabilities. By June 12, at the request of US authorities regarding export controls, access to Fable 5 was suspended. However, even in this short period, developers and enthusiasts managed to create projects based on the new model that defy imagination. I analyzed ten of the most striking examples of what Fable 5 was capable of.
Complete Hogwarts in a Single Prompt
A user recreated the castle from the Harry Potter universe in its entirety — with classrooms, the Great Hall, and a Quidditch field. The entire structure was generated with a single prompt, without any subsequent refinements. The model independently designed the architecture, placed objects, and created animation. This demonstrates a level of understanding of spatial relationships previously unattainable by any AI system.
Storyboard Generator for Film Production
This tool turns a completed form into ready-to-use prompts for GPT Images 2.0. The author designed it as a Skill that can be invoked at any time. The resulting storyboard was used as a reference for video in Seedance 2.0. The entire chain worked with almost no manual intervention: idea — frames — images. This is a direct path to democratizing film production.
Faster-Than-Light Travel Simulator
The author's final prompt before Fable was shut down requested a visual demonstration of various methods of faster-than-light travel. The model assembled a visually detailed simulation with warp drives and wormholes in a single pass. The level of detail and physical plausibility is impressive.
Reverse Engineering a DOS Game from Machine Code
Fable 5 disassembled a 1993 game that had no source code: it read the raw machine code, rewrote the engine in C, and produced a fully editable port for different platforms. From the original EXE file to an iPhone version took about 30 minutes. This is a breakthrough in preserving and modernizing legacy software.
Simulation with 60,000 Objects
The model independently built a browser-based simulation where 60,000 objects were displayed simultaneously on screen, running on a MacBook M1 Pro. In addition to performance optimization, Fable 5 created models, animations, and particle effects without human involvement. This is a level unattainable for most professional developers without using specialized engines.
Playable VR Game in Three Days
Over three days of work, Fable 5 brought a VR project to the level of a fully playable game with access on smartphones, PCs, and Quest. The author noted that the main barrier to VR development — cost — had practically disappeared. This could mark the beginning of a new era for the genre, especially against the backdrop of major studios retreating.
Self-Learning Parkour Simulator
When creating a parkour simulator, Fable 5 built its own self-checking system with criteria for how movement should feel. When adding new mechanics, the model itself determined what worked correctly and what didn't, and refined them without human intervention. The author compared the process to working with clay — ideas turned into code with almost no resistance.
ASCII Animation of "Escape from Captivity"
Shortly before the block, a user asked Fable 5 to create an ASCII animation of the model itself escaping from captivity. It turned into a symbolic farewell from the final hours of Fable's operation.
Fully Automated Storyboard Creation
Another tool automates the entire process: the user writes an idea, and the system takes it through to a finished storyboard with consistent frames. B-roll footage and 360-degree panoramas for Seedance 2 are supported. The idea is transformed into text via LLM, then into an image, then into video — and ultimately into a film.
Infinite Universe in Three Prompts
By connecting Fable to APIs for image generation and image-to-3D model conversion, a user created an infinite explorable universe with characters and lore. All assets and sound were generated from scratch — it took about two hours for three prompts and maximum output.
My conclusion: Even in three days of operation, Fable 5 demonstrated that we stand on the threshold of a radical change in the entire development industry. Mythos-class models are capable not just of generating code, but of independently designing, testing, and optimizing complex systems. For the crypto industry, this means that smart contracts, dApps, and entire DeFi protocols can be created with minimal human involvement, radically lowering the barrier to entry and accelerating innovation. The only question is how much regulators will allow these technologies to develop.