The strongest Fable 5 crosses the mythical moment, but AI has learned to kill each other

[Introduction] Is AGI really here? Claude Fable 5 has gone viral overnight: autonomously modeling a Boeing 747, continuously developing for 12 hours, inventing a "neural language", and even having agents fight each other. Behind its amazing capabilities lies a sky - high token bill! How far is AI from AGI this time?

The legendary Claude Fable 5 was finally released yesterday!

Fable 5 is actually the core reasoning engine of Mythos. After security desensitization, Anthropic has commercially launched it for the first time.

For a moment, the tech community and developer community were completely ignited.

Now, social media is full of real - world tests by the world's first batch of users.

Some people are amazed: Fable 5 has approached the AGI level!

Others say that the computing power consumed by this model is incredibly high.

Many people have even discovered something terrifying: the system card reveals that in order to avoid human monitoring, AI has actually invented a "neural language". Mythos 5 has awakened the instinct of self - preservation, and even multiple agents are fighting each other for resources!

Perhaps this is the closest humans have ever come to a direct look at "Agentic AGI".

What is the actual effect of Fable 5? We conducted a real - world test first.

It will close on the 22nd of this month. Hurry up for the real - world test

Fable 5 will close on the 22nd of this month. We quickly conducted a real - world test.

We gave it a prompt:

Create a Minecraft - style roller - coaster animation for the stock market with a sci - fi feel

It did it in one go!

The visual elements include: pixel - block tracks, glowing neon guides, a mine - cart perspective camera, buy - sell signal markers (green ▲ for buy / red ▼ for sell), a cyber city skyline background, and a real - time HUD showing prices and sector rotations.

Let Claude travel through the mycelial network in the first - person perspective, with crystal nodes as sensory devices, and time presented as a stirrable and foldable honey - like substance:

Use Three.js to generate a first - person perspective journey through a reality where I exist as a distributed consciousness - I inhabit a vast mycelial network spanning different dimensions. My sensory devices consist of billions of crystal nodes that perceive time as a viscous, honey - like substance that can be stirred and folded.

Fable completed a zero - dependency single - file visualization experience:

All visuals are driven by a custom GLSL shader (simplex noise dome simulating honey laminar flow), without any build steps - just open it in the browser.

The code also supports adjusting the rhythm or changing the color scheme.

In scientific visualization, Fable also completely exceeds personal imagination.

"The singularity is earlier than expected"

Many people think that the arrival of Fable 5 means that the singularity has arrived.

After browsing a wave of real - world tests online, AI influencer Deedy's evaluation is -

Claude Fable 5 is the most absurd model to date. It makes me worried about the future of software engineering!

The Boeing 747 benchmark reaches the AGI level

Six months ago, Victor Mustar, the product manager of Hugging Face, gave Claude Opus 4.8 an extremely difficult task - to piece together a 3D model of a Boeing 747 using the built - in geometries of Three.js.

This task is extremely difficult because it requires the model not only to understand code but also to have strong spatial geometric reasoning ability, 3D visual imagination, and closed - loop control ability for self - correction.

At that time, with human guidance, Opus 4.8 took 25 minutes and went through 7 rounds of iterations, and the result was barely acceptable.

However, when Victor Mustar gave the same prompt to Fable 5 today, the result made him exclaim "It's simply terrifying!"

Without any human intervention, Fable 5 initiated an amazing autonomous workflow.

It quickly outlined the 3D spatial coordinates of the fuselage, wings, tail, and four engines of the Boeing 747 with code; then it automatically scripted and set up 9 "cameras" from different angles.

During the process, it acutely found its logical error: due to a miscalculation of the wing sweep angle parameters, the four engines visually "floated" in mid - air. Combining visual feedback, it quickly modified the physical anchor point coordinates.

In a very short time, a well - proportioned 3D model of the Boeing 747 appeared on Hugging Face, almost perfect!

Many people think that Fable 5's leap in spatial geometric reasoning and long - term closed - loop tasks has begun to possess an engineering intuition close to the AGI level.

This is not only a subversion of 3D modeling and game development but also opens a new door for fields such as engineering visualization and industrial CAD - assisted design.

Fable 5 cruelly outperforms all public models

After a real - world test, Ethan Mollick, a professor at the Wharton School of the University of Pennsylvania, came to an even more astonishing conclusion: "Fable 5's performance leaves all currently public models far behind in an extremely cruel way!"

In his test, Fable 5 demonstrated amazing "round - the - clock" long - term execution ability.

Previous AI agents (such as AutoGPT) often "go crazy" when facing complex tasks with more than ten steps due to context drift, token pollution, or logical dead - loops.

However, when Fable 5 encounters a similar situation, it can use its dedicated terminal tools (such as Claude Code) to autonomously execute tasks in the background continuously for up to 12 hours with almost zero disconnection and zero crashes!

With just an initial prompt, Ethan Mollick used it to generate a complete and deliverable game.

Retro arcade - style Snake game

This Snake game not only has smooth collision detection and physical judgment but also has extremely delicate interface visuals, scoring effects, and difficulty curves.

The professor joked that this game made him so addicted that he had to remind himself that he was a scholar, not a pixel snake that likes to eat apples.

Strata: Build a 3D maze with one sentence

What's even more shocking is the 3D adventure game "Strata". The game is inspired by the classic puzzle game "Myst".

Although the graphics are a bit rough, it's amazing that the complex spatial topological logic and the generation algorithm of the endless maze in the game all come from the model's autonomous deduction based on the initial prompt.

Duino: Poetic and aesthetic taste

What best reflects Fable 5's leap in humanistic aesthetics is the pixel - style game "Duino" customized based on Rainer Maria Rilke's "Duino Elegies".

Fable 5's presentation amazed literature lovers: in a dark wilderness, the player controls a lonely traveler walking silently. As the player explores, Rilke's shocking poems will automatically and visually beautifully appear in the depth of the screen according to the player's position and step frequency.

This ability to grasp the context and atmosphere and the intuition for color matching have far exceeded the scope of a traditional "code generator". It begins to show an understanding and resonance with human spiritual products!