Build Fast with AI

@explosss1ve thats insane, ai has crazy potential in gaming. I tried to remake some famous games with fable and gpt 5.6 too and the results were great!

GPT-5.6 Sol and Fable 5 one-shotted a playable jet combat sim that runs in a browser tab. a couple hours, not a studio. flight64. you fly an F-16 over real terrain. what's already in it: → mountains, a lake, forests, all rendered → live speed and altitude readouts → a working radar tracking contacts → a lockable gun and missile loadout on the hud that's a flight model, a combat system, and a full hud, running live at a url you can just open. the split is the interesting part: → GPT-5.6 Sol does the reasoning, how flight should feel, how the radar tracks, how the systems connect → Fable 5 writes the three.js that actually makes it run one thinks, one builds. the flying is the part that got real. arcade flight is easy. tuning it so a jet banks with weight, so terrain reads at speed, so the radar isn't lying to you, that's the stuff that used to eat weeks. it's not shipping to steam though. a browser sim that runs is a long way from one that holds you for ten hours. mission design, balance, the feel of a real dogfight, that's still the human half no prompt closes. but a working jet sim with radar and weapons, from two models, in an afternoon. the code barrier for a game like this basically fell off a cliff. what would you one-shot first if a flight sim only takes an afternoon now?

We tested GPT 5.6 Sol Ultra against @AnthropicAI's Fable 5 on a one-shot subway surf inspired endless running game and this was the result : Fable 5 : silky-smooth gameplay, great sound effects, solid build all around. but it played it safe - the levels were too easy, nothing pulling you back for one more run. GPT 5.6 Sol : nailed the difficulty curve, great vibe, enough content to keep playing, and the gameplay itself was top notch. at 1/8th of the cost. the catch nobody mentions: GPT 5.6 took ~2x longer to generate. so that's the frontier trade right now - pay 8x for speed, or wait twice as long for the same class of output. which side of that trade are you on?

@fyleaz its really good model

@BuildFastWithAI Ngl GLM 5.2 did the best.

We tested Fable 5, Grok 4.5, GPT 5.6 Sol Ultra, and GLM 5.2 on the same arcade game prompt. This was the result : Claude Fable 5 - the smoothest gameplay of the four. fluid movement, no jank. Grok 4.5 - nailed the screen shake, particle explosions, neon cinematics. most visually dramatic build. GPT 5.6 Sol - the all-rounder. genuinely great gameplay experience, nothing broken, everything solid. GLM 5.2 - an open-weight model shipping a complete, playable build that held its own against three closed frontier models. Which one did you like the most?

@hozumi00525761 interesting

@BuildFastWithAI Fableは敵の色が少なく再現性が低く見えます。 Grokは偽物っぽさを感じます。 GPTが比較的インベーダーっぽいです

@KrakenUnbound definitely, you can also add new features that you wished existed at that time!

@BuildFastWithAI A year ago I made a bunch of arcade games with claude. I think it is time to revisit them with 5.6 and see if I can polish them up a bit.

@SyntheticLevel 5.6 took the most time, others didnt take that long tbh

@BuildFastWithAI How long did each one take?

@PedroKnigge No doubt, Grok is the perfect combination of Speed + Intelligence

@BuildFastWithAI What about time? Grok is extremely fast compared to the others on my tests.

Create a complete Space Invaders-inspired arcade game using ONLY a single HTML file. Requirements: - Everything must be contained in one HTML file (HTML, CSS, and JavaScript). - Do not use any external libraries, frameworks, assets, or CDN resources. - Use the HTML5 Canvas API for rendering. - The game should run immediately when the HTML file is opened in a browser. Gameplay: - Player controls a spaceship at the bottom of the screen. - Move left/right with A/D or Arrow keys. - Shoot with Spacebar. - Multiple rows of alien enemies move horizontally and descend after reaching screen edges. - Enemies fire projectiles at random intervals. - Player has 3 lives. - Score increases when enemies are destroyed. - Game ends when lives reach zero or enemies reach the bottom. - Winning occurs when all enemies are destroyed. Visuals: - Modern neon sci-fi aesthetic. - Smooth animations (60 FPS target). - Particle explosion effects when enemies are destroyed. - Background starfield with subtle movement. - HUD displaying: - Score - Lives - Current Level - Responsive canvas that scales with browser size. - Screen shake effect on explosions. - Flashing effects for hits. - Animated menu and Game Over screen. Audio: - Generate simple retro sound effects using the Web Audio API. - No external audio files. Game Features: - Increasing difficulty every level. - Faster enemies each round. - Occasional bonus UFO crossing the top of the screen. - Pause with P. - Restart after Game Over. - High score stored using localStorage. - Delta-time based game loop for smooth gameplay. - Clean object-oriented or modular JavaScript architecture. Code Quality: - Well commented. - Organized into logical sections. - Avoid global variables where possible. - Maintain good performance. Output: Return ONLY the complete HTML document enclosed in one ```html``` code block. Do not include explanations or markdown outside the code block. make a small version of the prompt

@BuildFastWithAI Can you share the prompt?

prompt : Create a complete Space Invaders-inspired arcade game using ONLY a single HTML file. Requirements: - Everything must be contained in one HTML file (HTML, CSS, and JavaScript). - Do not use any external libraries, frameworks, assets, or CDN resources. - Use the HTML5 Canvas API for rendering. - The game should run immediately when the HTML file is opened in a browser. Gameplay: - Player controls a spaceship at the bottom of the screen. - Move left/right with A/D or Arrow keys. - Shoot with Spacebar. - Multiple rows of alien enemies move horizontally and descend after reaching screen edges. - Enemies fire projectiles at random intervals. - Player has 3 lives. - Score increases when enemies are destroyed. - Game ends when lives reach zero or enemies reach the bottom. - Winning occurs when all enemies are destroyed. Visuals: - Modern neon sci-fi aesthetic. - Smooth animations (60 FPS target). - Particle explosion effects when enemies are destroyed. - Background starfield with subtle movement. - HUD displaying: - Score - Lives - Current Level - Responsive canvas that scales with browser size. - Screen shake effect on explosions. - Flashing effects for hits. - Animated menu and Game Over screen. Audio: - Generate simple retro sound effects using the Web Audio API. - No external audio files. Game Features: - Increasing difficulty every level. - Faster enemies each round. - Occasional bonus UFO crossing the top of the screen. - Pause with P. - Restart after Game Over. - High score stored using localStorage. - Delta-time based game loop for smooth gameplay. - Clean object-oriented or modular JavaScript architecture. Code Quality: - Well commented. - Organized into logical sections. - Avoid global variables where possible. - Maintain good performance. Output: Return ONLY the complete HTML document enclosed in one ```html``` code block. Do not include explanations or markdown outside the code block. make a small version of the prompt

@WyckyWyld fable is indeed still the best so far

Fable does look the best. I like that grok's aliens are different characters and not just different colours but no animation & the screen shake would drive me nuts, i'd be turning that off or down. Interesting that GPT and GLM's aliens look the exactly the same even the animation, just size diff.

@Angaisb_ this almost looks like a real game, i tried to create something similar but it burned through 100% of my daily usage in a single prompt xD

GPT-5.6 Sol Ultra made the best Minecraft clone in Three.js I've seen from any model so far Health bar, hunger bar, even a creative and survival mode selector... no other model bothered with those

@Oluwaphilemon1 its really good at frontend and creative side too!

Tried the new GPT-5.6 Terra and Claude Fable 5; By asking them to create a Kyoto street scene. One thing I really like is that, when paired with Codex, it automatically generates the background image. The cobblestone streets and warm lighting turned out beautifully. Compared to Claude, the difference in style is noticeable. Claude leans toward a slightly anime-inspired aesthetic, while GPT tends to produce more realistic-looking scenes.

@TokenGremlin fable cooked this time ngl

Both GPT-5.6 Sol and Fable 5 were asked to build a 3D Star Fox-style level with enemies, power-ups, and a boss battle. The impressive part is that GPT-5.6 Sol can one-shot a working game from a simple prompt in about 10 minutes while being much cheaper to run: $5/M input and $30/M output, compared to Fable 5 at $10/M input and $50/M output. At this level of capability, cost matters a lot. Cc: @petergyang

@TokenGremlin genuinely love this model, its really good at frontend and its creative side is also insane, i ran some tests with it for making 3d websites and games, it performed really good every single time, fable class output at half the cost is crazy!

A Google Earth-style experience was built with GPT-5.6 Sol Ultra, and the scope is genuinely impressive. The project includes 3D terrain, satellite imagery, cities, landmarks, live weather, day and night cycles, cinematic tours, and global search. At more than 30 million tokens, this is not a cheap experiment, but it shows very clearly what high-end AI-assisted software generation is starting to look like. Cc: @pankajkumar_dev

@aimlapi i wonder if they are just providing the compute at a discount for now, is it actually sustainable for them?

GPT 5.6 Sol & Terra just made Fable 5's pricing look like a joke! We gave OpenAI's top models (Sol, Terra) and Anthropic's top models (Fable 5, Opus 4.8) the same 3 prompts: • Supernova boom • Meteor hitting a city • Solar system model The bill: Sol: $4.77 Terra: $1.24 Fable 5: $9.94 Opus 4.8: $2.46 Outputs came out surprisingly close. The prices didn't. Fable 5 cost unreasonably more than everything else, with Sol not far behind. Considering latest Fable 5 nerf, it's hard to see what you're paying for.

Create a visually stunning interactive simulation that compresses thousands of years of ant colony evolution into a 30-second experience. The goal is NOT scientific accuracy—it is to create an impressive real-time demonstration of an ant civilization rapidly emerging, evolving, expanding, adapting, and dominating its environment. TECHNICAL REQUIREMENTS - Build everything in a single HTML file. - Use HTML, CSS and JavaScript only. - You may use either: - HTML5 Canvas - WebGL - Procedural 3D rendering - Do NOT use external assets, textures, images, models, APIs, or libraries. - Everything must be procedurally generated. - The simulation should start immediately when the page loads. PERFORMANCE - Target a smooth 60 FPS. - The simulation should comfortably run on an average modern laptop. - Optimize rendering, AI, and particle systems. - Use instancing, batching, or other efficient rendering techniques where appropriate. VISUAL QUALITY (Highest Priority) The visuals should feel like a modern game or tech demo. Create beautiful procedural graphics including: • Highly animated ants with: - articulated legs - moving antennae - carrying food - smooth turning - natural movement - different castes (workers, soldiers, queens) • Rich environment: - grass - rocks - flowers - dirt - tunnels - shadows - lighting - depth - animated foliage • Dynamic effects: - dust particles - sunlight - ambient occlusion style shading - bloom-like glow - depth fog - soft shadows - animated lighting - weather changes Everything should feel polished rather than simplistic. SIMULATION TIMELINE Compress the entire colony's history into approximately 30 seconds. The simulation should automatically progress through stages such as: Stage 1 A lone queen searches for a nesting location. Stage 2 First chamber is dug. Stage 3 Egg laying begins. Stage 4 Larvae hatch. Stage 5 Workers emerge. Stage 6 Food gathering begins. Stage 7 Tunnel network expands. Stage 8 Population rapidly increases. Stage 9 Specialized ants appear. Stage 10 Resource logistics become organized. Stage 11 Predators or disasters appear. Stage 12 The colony adapts. Stage 13 Evolution introduces new traits. Stage 14 The colony dominates the surrounding ecosystem. The pacing should feel cinematic. COLONY AI Ants should appear intelligent. Include behaviors such as: - pheromone trail following - obstacle avoidance - food discovery - cooperation - tunnel excavation - brood care - defending the nest - path optimization - swarming - colony expansion The behavior only needs to appear believable rather than scientifically perfect. EVOLUTION Throughout the simulation, visually demonstrate evolution. Examples include: - larger workers - faster movement - stronger soldiers - improved organization - larger nests - new ant colors - larger colonies - smarter pathfinding - changing behaviors The audience should clearly see the colony becoming more advanced over time. CAMERA The camera should be dynamic. Examples: - cinematic flyovers - smooth zooming - underground tunnel transitions - macro close-ups - following worker ants - dramatic reveals of the expanding colony - sweeping aerial views Never leave the camera static. UI Keep the interface minimal. Include: - timeline progress - colony population - food stored - chambers built - generation number - evolution level Use elegant modern typography. AUDIO Generate ambient sound procedurally using the Web Audio API. Include subtle: - environmental ambience - digging sounds - colony activity - evolving music intensity No external audio files. CREATIVITY Do not merely simulate ants. Create moments that make viewers say "wow." Invent: - surprising evolutionary adaptations - environmental events - rival insect encounters - ecosystem changes - dramatic colony expansions - visually impressive emergent behavior Treat this as a cinematic real-time showcase rather than a scientific simulation. OUTPUT Return ONLY a single complete HTML file enclosed in one ```html``` code block. No explanations. The final result should feel like a polished interactive tech demo that could be shown during an AI product presentation, with spectacular visuals, fluid animation, and an entire civilization evolving from one queen into a thriving supercolony in roughly 30 seconds.

We asked GPT 5.6 Sol Ultra to compress 10,000 years of evolution into 30 seconds. one prompt. one HTML file. zero assets, zero libraries. what it generated is the wildest part - not just a simulation, a DIRECTED one: - ants with 6 articulated legs, waving antennae, castes that grow + recolor as they evolve - pheromone trail AI: foraging, brood care, soldiers charging a spider predator - a cinematic camera that dives underground to the brood and sweeps out for the final dominion shot - 14 auto-progressing stages with title cards Fable 5 finally has a strong competitor now! Prompt in replies👇

OpenAI just dropped GPT 5.6 Sol, Terra and Luna and I decided to test it on a one-shot horror game - single HTML file, enemy AI, inventory, crafting, dynamic lighting, procedural audio. it delivered the whole thing in one shot. genuinely Fable class output. It however also burned 100 % of my daily usage in one prompt. Sol Ultra runs subagents under the hood, so one prompt can burn several runs' worth of tokens. so the real question for 2026: would you rather have a cheaper model you can prompt 50 times, or a monster you can afford to prompt once?

@0to60in2point9 @SpaceXAI i just used the grok cli in terminal

@BuildFastWithAI @SpaceXAI Did you do that prompt in Cursor with CLI access? Super impressive!

Grok 4.5 is insane at creativity, I asked @SpaceXAI's Grok 4.5 to invent an original horror game from scratch. no template, no "clone resident evil." one prompt, one html file, browser-playable. it designed its own lore, mechanics, enemy, and ending - then coded the whole thing first-person in three.js. atmosphere, sound design, jump pacing, all of it. $2/$6 per M tokens, btw. fable-class creativity at 1/8th the cost. what genre should i make it invent next?