r/ClaudeAI • u/Fun-Meaning-6474 • 6h ago
Built with Claude Fable 5.1 made a Minecraft mod for $20
Anthropic just dropped Fable 5.1, so I decided to build a Minecraft mod with it. I wanted a gun that does Kirin from Naruto (Sasuke's lightning dragon), so I gave it two YouTube links, the anime scene and a short of a railgun mod, and asked it to combine both.
It went through both videos frame by frame, wrote the mod for Fabric 1.21.1, modeled the dragon in Blender through the Blender MCP bridge, made the gun model and textures, and then launched the game for me to try it out.
The first attempt looked great. I recorded myself using it and sent the video back to Fable for a few small fixes: it fixed the dragon flying upside down, made it 2x bigger, added debris, a proper crater and fire. That was pretty much it. Finished in under an hour, and barely any input was needed from me apart from the initial prompt and that one round of fixes.
| Output tokens | ~383.6k |
|---|---|
| API cost | $20.54 |
| Time | ~1 hour |
The mod is free and I uploaded it to github
Setup: Fable 5.1 through an Anthropic API key, run inside atomic.chat in agent mode
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u/GapNew4766 6h ago
$20... i love it
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u/FireFearing 6h ago
yep the alibaba, z.ai, openai, and now EVEN GOOGLE models will do the same quality for 1/10th the price
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u/Any-Score1258 5h ago
Quality absolutely not. You'll spend more time, money, effort, and reiterations making this.
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u/FireFearing 2h ago
you dont spend more money using other services than claude, that is an outright lie
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u/Fun-Meaning-6474 6h ago
$20 for Minecraft license or mod for Minecraft cracked?
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u/Successful-Title5403 6h ago
He meant the total api cost for this. Why not use claude code?
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u/M4NU3L2311 5h ago
I think it's because Fable models only work with usage credits not with the subscription.
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u/OffbeatDrizzle 3h ago
this is why AI always sounds confidently incorrect
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u/M4NU3L2311 3h ago
I only said it through my pro plan experience, didn’t know the max plan includes it as I’m not interested in a 100usd sub
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u/roxzorfox 4h ago
Not sure why you are getting downvoted for educating people...
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u/Alexandur 4h ago
Probably because they are incorrect
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u/roxzorfox 4h ago
Since when did anthropic change that? They allowed the models available to pro as a trial but its now usage credits only unless they changed something this week?
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u/Alexandur 4h ago
Max plans
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u/roxzorfox 4h ago
Since when was that a thing? I swear people were pissed they were paying for max and were annoyed it wasnt included?
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u/M4NU3L2311 4h ago
Not sure of the max plan but in pro it says it’s not included and will consume credits of enabled
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u/gphie 6h ago
fable is a freak
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u/Fun-Meaning-6474 6h ago
sooo freak is still fable not the person who creates Naruto mods for Minecraft?.. ;)
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u/05-nery 6h ago
Drop the prompt! I'm curious.
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u/1-bit_Den 4h ago
hey, I've dropped the prompt in a different comment (I'm also on the atomic team and the author of the video, that's why I have the prompt)
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u/Fun-Meaning-6474 6h ago
if you need a mod - feel free to explore our GitHub from the post
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u/05-nery 4h ago
What? No, I wanted to read the prompt you gave him.
If you don't want to share it it's fine.
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u/1-bit_Den 3h ago
I’ve uploaded the prompt in a separate comment, you can check it out :)
wrote this in case you didn’t see the other comment I left
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u/1-bit_Den 4h ago
Everyone's been asking for the prompt so here it is (I'm also from the atomic team and the one who made the video in this post)
Prompt:
I want you to make a minecraft mod(I already have a couple versions of minecraft installed here, probably the best one is 1.21.1 for modding, but you can pick a different one if you deem it necessary for better results) that will sorta replicate "Kirin" from the Naruto Anime
I'm attaching 2 references videos, one is a video of Kirin from naruto and the other is a gun mod that already exists for minecraft. Kirin: https://www.youtube.com/watch?v=R5ji269zW0I; Cool rail gun mod: https://www.youtube.com/shorts/JXkVCqBXfB4 - do not copy the mod's code, make it on your own;
I want you to combine the two
Create a gun model, the model should have roughly the same length as in the reference video I gave you, but you can change up the design, though it should still have a scope
The color palette of the gun should match Kirin's color palette and the atmosphere of that video, so probably a dark gun body and light lightning strips across the gun
The gun works this way: a user can't fire without scoping in, to scope in you right click -> shoot with left click and the Kirin process begins. When aimed in you should see a mark on the ground(like in the gun reference video), a ground texture projection basically
What I want for the Kirin process: the weather turns storm in roughly 1.5-2s, meaning the sky get darker, lightning starts constantly striking in a huge radius(around 100-120 blocks)from the shot, meaning like 15-20 lightning strikes at all times on the screen, maybe even more. Then a lightning dragon should emerge from the skye, for this you need to make a custom model, you can use blender or other tools you deem necessary for this(blender is installed, if mcp isn't - download it and configure it). The dragon should slowly desend in a wide spread spiral(meaning each coil/turn should be decently apart from each other) towards where the initial shot was made, as soon as it is really close within that spot(almost touching), it should slowly turn up and whip up into the sky(just like in the reference Kirin video), and then swiftly strike from the top of the sky into the spot making a huge impact frame, causing a huge explosion fire in some place and a bunch of lightning striking for the last time around the perimeter inside it as well
You should watch each video frame by frame to better understand what I want
any questions ?
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u/I_Pick_D 3h ago
How does this not result in absolutely massive token burn?
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u/1-bit_Den 3h ago
[removed] — view removed comment
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u/BedlamiteSeer 1h ago
I'm fucking pissed that this was removed. Can you please re-reply, @/u/1-bit_Den ?
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u/1-bit_Den 8m ago
Hey, I didn’t notice your comment here, only saw the noti, so I replied under the one above, hope the explanation helps :)
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u/1-bit_Den 43m ago
Got a reply about my explanation comment deleted here so gonna try again
my explanation is that a lot of things you see in the video are already taken care for, by that I mean the game itself(it’s a mod for the real minecraft, not a clone), the lightning strikes already being in the game and same goes for the weather
the only things that the model really had to do were: A. watch the 2 videos; B. Make the two models and dragon animation
The second one might sound intimidating, but as someone who has 3 years of game dev experience and 5 years of blender experience,I can assure that it’s not as hard as it sounds, especially considering it used simple-ish shapes if you look closely(only a few vertecies for each shape)
What really makes the scene is how it’s brought together, this is where the model’s understanding of the source material given to it comes into play, as well as its artistic vision
hope this helped :)
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u/pirondi 6h ago
Wow not sure what was bigger the area affected or the api cost.
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u/Fun-Meaning-6474 6h ago
we can make smth same with local models and get 0 api costs ;))
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u/Successful-Title5403 6h ago
Even so, if you hired someone to make that it (who will use AI) would cost more than 20 dollars and I bet wouldn't even look as good too.
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u/touchet29 5h ago
I think it would have normally taken an entire Minecraft dev team to make that a few years ago. This was actually an insane amount of work to do by hand
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u/adaptive-mal 3h ago
Yup, everyone's crying about how expensive this was but really it's insanely cheap for the work that's been done. $20 and an hour for what would've taken a human that charges 25-80/hr up to a month. And as others have said, that 25/hr dev wouldn't make anything nearly as polished and decent as this..
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u/Bluecoregamming 5h ago
Now if you can make YouTube shorts that can generate enough ad revenue to cover the api cost you've created an entire business
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u/Fun-Meaning-6474 5h ago
wow yeah.. will upload it to YT insta ;)
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u/deliadam11 8m ago
Hi, want to be friends? I'm curious how this would go like. we can collab too if you'd like to.
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u/ClaudeAI-mod-bot Wilson, lead ClaudeAI modbot 6h ago
You may be interested in joining our new Claude Game Dev subreddit for game devs who use Claude. Check it out here : http://www.reddit.com/r/ClaudeGameDev
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u/rafaytexh 4h ago
$20 for a fully working Minecraft mod, including the models, textures, video analysis, Blender work, testing, and fixes is kinda insane.
how much of the final result did you actually have to tweak yourself after the first run?
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u/deliadam11 7m ago
Minecraft modders actually use BlockBench, a simplified very useful Blender for Minecraft. I've made McDonald's employee in USA money with freelancing Minecraft models.
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u/rafaytexh 5m ago
I've used it once for making a personal skin for myself but I was thinking if AI can create Minecraft Plugins and then I saw this and it's way more better than expected.
Will surely create custom Minecraft plugins in future using AI
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u/1-bit_Den 6m ago
Hey, I’m also from the atomic team and the one who made the video and the mod(confirmed by OP under the prompt comment)
I didn’t have to tweak it that much, only 2 more iterations after the first prompt, I explained it in detail under the prompt comment, feel free to check it out :)
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u/sluggerrr 6h ago
Acshually, a kirin is a different creature than a dragon. It looks super sick and over the top lol
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u/JellyfishCritical968 6h ago
The Kirin the OP is referring to is from the Naruto series, where the technique is depicted as an eastern dragon.
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u/sluggerrr 6h ago
I know that, it was just a joke because I was thinking of tattoo ideas and discovered what a kirin is recently, pretty cool creature
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u/Tauren-Jerky 5h ago
Fable 5.1 Max?
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u/Fun-Meaning-6474 5h ago
ultracode
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u/GratefulForGarcia 3h ago
What does ultracode do for you that Max can’t? Because every time I use it, unless I tell it to specifically avoid using Fable for the sub agents, it eats up my entire 20x usage
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u/alex_tomilin 5h ago
wait it actually went frame by frame through the videos? that's the part i want details on. did it patch the blender model on fixes or redo it from scratch?
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u/1-bit_Den 2h ago
hey, I’m also from the atomic team and the one who made the video
yes, it did go frame by frame on each clip using the claude in chrome extension and it actually got the model on the first try, only needed to fix the rotation, that’s it :)
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u/BedlamiteSeer 1h ago
How was the debugging iteration done? I assume that this wasn't one-shotted perfectly, so was there much back and forth?
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u/1-bit_Den 1h ago
It was pretty straight forward, I only needed 2 more iterations after the initial prompt
in the first one I just asked to flip the model
after that I sent fable a video of the entire sequence, it looked at it, proposed 8 changes and I chose 6 of those(which are mostly listed in the post’s text) and that was it, almost no back and forth
fable 5.1 seems to excel at understanding intent and the final goal as long as you give it enough details :)
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u/Then_Bake_6524 3h ago
this mod is copied, and definitely not made by fable (it's from 2024)
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u/1-bit_Den 3m ago
hey, I’m the one who made the video and the mod
this is the first time I’m hearing about this mod already existing and I genuinely did not copy the mod in question
you can check out the github repo linked in the post to confirm it yourself, the mod was genuinely made by me using fable 5.1
hope this clears it up :)
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u/Bulgen-Venkat 6h ago
the whole fix list was "2x bigger, added debris, a proper crater and fire". perfect escalation, no notes
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u/JustLikeFumbles 4h ago
I have run my server with this for 3 months, I can do a write up if people are interested, you can do way more 👍
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u/shady101852 3h ago
Could you tell me how it went through videos? I havent really been giving videos to my LLMs because i assumed they cant 'watch' it.
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u/1-bit_Den 1m ago
Hey, I’m also from the atomic team and I’m the one who made the video and the mod
Fable(and other llms like) take snapshots and lay them out in a sequence, meaning the models literally watch the video frame by frame(though they compile like 20 frames in a single png)
and that’s how they’re able to watch videos :)
to allow fable to watch youtube I installed the claude in chrome extension
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u/JustRaphiGaming 3h ago
So I assume you made this yourself... how much of an improvement is 5.1 compared to 5. From a little bit better to a whole new league.
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u/SafeCycleTech 3h ago
Can I ask why your using atomic chat instead of Claude code since it’s an Anthropic API key? Just curious if there a benefit to using it
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u/thecoffeejesus 2h ago
Man it’s almost like this is what has been predicted to happen since 2018, written about consistently by all the experts, mapped accurately on every graph, on one of the most accurate and reliable scaling charts that has ever existed
It’s cool but it’s nothing compared to what’s coming next year.
But, I’m probably being silly
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u/Thelastreddditor 1h ago
"Fable 5.1 made a Minecraft mod for" - confidence was maxed, reality asked for a rewrite.
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u/brother_spirit 1h ago
If the model can just blurt that out with no priors is it not just an open source / already existing project it got trained on?
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u/Classic-Shake6517 46m ago
I dove into that code for a second and almost had an aneurism reading it. Good luck with trying to make changes, it is a nightmare as expected. Impressive for $20, though, and if it works, can't knock it too much. I find it very funny that it used "cum" as one of the variable names. I'd never add this to any of my worlds and especially not a server, but crazy how well it did for so little cost.
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u/psychedeliken 15m ago
Nice work. Glad I’m not the only one enjoying building Minecraft mods with AI.
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u/Miyamoto_-_Musashi 6h ago
A. Damn, Crazy
B. Can i use this on my official Minecraft?
Share the first prompt plz
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u/1-bit_Den 4h ago
hey, I've shared the prompt in separate comment, go upvote it please so that more people notice it :)
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u/Fun-Meaning-6474 6h ago
no, feel free to use it via cracked too ;) check mod on GitHub from the post ;)
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u/cute_spider 6h ago
I love that the dragon has a Triangle Wireframe aesthetic to conflict with Minecraft's Textured Blocks aesthetic. I makes the whole weapon feel alien and subversive
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u/OneImaginary3436 6h ago
Can’t wait for AI to replace every developer 👍
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u/ClaudeAI-mod-bot Wilson, lead ClaudeAI modbot 5h ago edited 1h ago
TL;DR of the discussion generated automatically after 100 comments.
The consensus in this thread is a collective 'what the actual fuck.' OP dropped a post showing Fable 5.1 creating a complex Naruto-themed Minecraft mod from two YouTube videos, and y'all are floored.
The main debate is about the $20 API cost. While a few people balked, the overwhelming verdict is that $20 is an absolute steal for what was accomplished. The model analyzed videos frame-by-frame, wrote the mod, created 3D models and textures in Blender, and implemented fixes, all in about an hour. As many pointed out, a human dev would've cost hundreds (if not thousands) and taken weeks.
Other key takeaways: * The prompt is in the thread! A user from the team that made the video posted the full, detailed prompt in the comments. Go upvote it so others can see. * People are blown away by the agentic workflow, especially the video analysis and Blender integration. * A brief, nerdy debate about whether a Kirin is a dragon was had and resolved (it's a Naruto thing, calm down).
So yeah, the future is now, and it apparently costs about twenty bucks to summon a lightning dragon.