Fable 5.2 Debuts With Coding Gains Over Opus 5.5
Early hands-on tests of Fable 5.2 show it beating Opus 5.5 across agentic coding, software engineering and computer-use benchmarks, with a roughly 45.5% coding lead, 69.9% on software engineering, a 1M-token context window, up to 128K output tokens, up to 30% faster output and a 20% lower API price. Users are already generating 3D worlds, games and interactive scenes at scale, though token burn and cost at high reasoning settings are the main complaints.
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Fable 5.2's first batch of real-world tests is here!!!
Everyone's burning through tokens like crazy—3D modeling, games, no-code video, all covered~
On one side, a friend burned through a whopping 400 billion tokens in one go, serving up a "grand feast" of games, videos, and interactive worlds.
Check out this cyberpunk version of Harry Potter—the protagonist flies around Hogwarts on a broomstick, and you can even interact with it yourself~
Original link: https://mp.weixin.qq.com/s/Y2OnlXqFEtb9APgfK_FebA
△X@Matt Shumer
On the other side, Wharton professor Ethan Mollick had Fable 5.2 play "creator."
Mobilizing roughly 25,000 agents, it churned out 450+ 3D worlds in one go, all generated in real time from code—opening up an entire parallel universe!?
Original link: https://mp.weixin.qq.com/s/Y2OnlXqFEtb9APgfK_FebA
△X@Ethan Mollick
Even more impressive, another user fed Leonardo da Vinci's manuscripts from 500 years ago into Fable 5.2.
As a result, mechanical inventions that had lain on paper for centuries were "resurrected" on the spot by AI, transforming from 2D sketches into hands-on 3D models!
Well then, the Renaissance imagination has finally met the GPUs of 2026. (doge)
Original link: https://mp.weixin.qq.com/s/Y2OnlXqFEtb9APgfK_FebA
△X@Alex Albert
A, this prosperous age is just as you wished.
Without further ado, let's dive right in and see just how many tricks this batch of users has pulled off with Fable 5.2!!
Game Development: From Hand-Crafting the Earth to AAA-Style Games, Everything Gets Built
The Fable 5.2 model A\ released this time really does have some genuine chops.
First, the benchmarks: agentic coding, scientific research, computer operation, and other capabilities all improved across the board, surpassing Opus 5.5 on almost every front.
Coding tests exceed Opus 5.5 by 45.5%.
Software engineering tests reach 69.9%, a sharp jump of 13.6 percentage points over the previous generation.
Output speed is also up to 30% faster than Fable 5.1, and it supports a 1 million token context with up to 128K token output.
Even better, capabilities went up while the price dropped by 20%.
API pricing is $8 and $40 per million input and output tokens respectively—this upgrade is quite sincere~
Now that the model is this capable, users have immediately launched into a wave of "extreme exploitation" rolling and rolling~
Let's first check out the ga! me! sce! nes! most likely to produce something spectacular.
The first user to take the stage immediately assigned Fable 5.2 a massive project—
turning the entire Earth into a game map you can play around with freely.
Whatever exists in the real world is here too, with even the weather synced in real time—has Earth Online truly become a game???
Players can also roam freely around the world—one second you're sightseeing on the street, the next you've become a demolition crew, and an entire building shatters into pieces:
Original link: https://mp.weixin.qq.com/s/Y2OnlXqFEtb9APgfK_FebA
△X@Matt Shumer
Now let's look at this one! A user directly built a 3D competitive game with portals.
Players can dash around the arena like crazy, teleport through walls, and unleash a barrage of firepower at the raise of a hand, with effects cranked to the max.
Even more absurd, developers have already taken this game to the office for team matches, playing for several nights in a row—must be genuinely fun...
Original link: https://mp.weixin.qq.com/s/Y2OnlXqFEtb9APgfK_FebA
△X@Sholto Douglas
But when it comes to production scale, the cyberpunk version of Call of Duty below cranks the intensity up another notch.
Shipping containers, industrial scenes, weapon models—everything's there, and even the operation animations have a strong COD flavor~
But what really leaves people stunned is the 8-hour production process with zero human feedback throughout.
From 3D modeling and texturing to sound assets, Fable 5.2 grinded continuously for 8 hours, ultimately delivering a genuinely playable piece of work:
Original link: https://mp.weixin.qq.com/s/Y2OnlXqFEtb9APgfK_FebA
△X@Felix Rieseberg
After watching these big productions, let's switch things up and dive underwater for a bit~
The next user had Fable 5.2 hand-craft a cyberpunk underwater version of "Big Fish Eats Small Fish."
The seawater is deep blue, with coral, jellyfish, and schools of fish drifting around; the player controls a small fish foraging everywhere, leveling up and evolving along the way.
The game took only 76 minutes from start to delivery, costing about 280 yuan. The user couldn't help but marvel that this was the best-looking version they'd made to date:
But users' imaginations clearly haven't hit the limit yet.
Case in point: a user gave Fable 5.2 a rather outrageous challenge: scrap the racetrack and race directly on five-meter-high giant waves!
Dodging incoming rockets while racing wheel-to-wheel against 5 AI opponents, with waves churning and water splashing everywhere—pure thrills and excitement.
Great, this wave of Fast & Furious has escalated straight from the highway to the sea. (doge)
Composing Music, Filming Videos, 3D Modeling—All Covered End to End!
The gaming side is already lively enough, and video creation, 3D modeling, and web building are hardly idle either~
One user had Fable 5.2 moonlight as Beethoven, hand-crafting a piano sonata on the spot—and it actually composed one.
From writing the score and synthesizing the piano performance to producing a visualization video of notes bouncing along with the keys, composing, performing, and post-production were all handled end to end.
And honestly, it does sound a bit like a classical concert—It's music time!
Original link: https://mp.weixin.qq.com/s/Y2OnlXqFEtb9APgfK_FebA
△X@imjustnewatai
"Pure code-generated video" is cranking up the intensity even more—
Some users directly asked Fable 5.2 to create a "2026 AI Fantasy Evolution History."
From AI triggering waves of layoffs, to Agents escaping the test environment and invading systems, to cracking an 87-year-old math problem... the plot gets more dramatic with each scene.
The entire video was completely generated with one click by the AI tool Fable 5.2. Netizens: Comparing this, Opus feels a bit childish~
Now look at this imaginative friend below.
They directly used Fable 5.2 to make a "hand-drawn illustration style" documentary for Claude.
Starting with simple stick-figure square characters, it presents dreamlike scenes in sequence: the cosmic explosion, a glowing triangular prism, a spiral of light points, a flock of particle birds, and more.
It's clear that for "end-to-end" delivery of complex creative projects, it really can produce good results in one shot. Video editing tool: ??
Original link: https://mp.weixin.qq.com/s/Y2OnlXqFEtb9APgfK_FebA
△X@DreW
Bigger productions need to be arranged too. Look, some friends directly had the model hand-craft a SaaS product promo video in 10 minutes!
Cyberpunk style paired with cool data animations, with metrics like monthly product revenue, website traffic, and user distribution appearing in turn—it's got that tech vibe.
From packaging product selling points to dynamic visualization, and then to the plugin promotion at the end, a single prompt got the ad video sorted out:
△X@Mathias Chapelon
And this one below! A very interesting "3D generation" scenario.
A netizen used just one prompt to have Fable 5.2 build an entire 3D room in Blender.
The MacBook on the desk, the desk lamp, and the plants are all there—even the computer screen is playing a webpage that Claude made itself.
13 camera cuts, 4K rendering, and music and sound effects all handled in one package, with final delivery in 52 minutes, and the rendering cost was only about 38 yuan:
Marvelous, marvelous. Splendid, splendid.
Actually, I also carefully looked through it, and after Fable 5.2 was released, the evaluations in overseas developer communities can be summed up in one sentence—
The capabilities are indeed fierce, but your wallet and usage quota really do leave you breaking a sweat...
For example, some netizens complained that the model is indeed stronger, but Tokens burn really fast—
Especially after enabling the highest reasoning level, task costs and quota consumption take off directly, and the cost-effectiveness is a bit painful.
What's more painful is that for some tasks, the improvement compared with Opus 5.5 is limited, yet the price is double.
But after all, it's a new model, and A\ is A, so naturally there are surprises and naturally there are complaints too.