KIMI K3 is Ridiculous.

Summary of the Subtitles (Tech Concepts, Product Features, and Evaluation)

• The creator claims Kimi K3 is an extremely strong publicly available AI coding/game engine model, tested using a “Kimi code environment” embedded in VS Code.
• They compare Kimi K3 against Claude/“Fable 5” (likely a competitor model referenced earlier). Their testing uses the same general idea: generate games originally made with that competitor.
• They run three prompt-driven game builds (Minecraft, Fortnite-like, and a GTA-like sandbox) using highly detailed, pre-made prompts, including an “autonomous senior game development studio” style prompt.

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Tech Specs / Bragged Model Capacity (As Stated)

The subtitles present these claims to support Kimi K3’s ability to handle complex game generation:

• “2.8 trillion parameters”
• “1 million token context”

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Game 1: Minecraft (Generated From One Prompt)

Approach

• Uses a strong pre-made prompt instructing Kimi K3 to build Minecraft as an autonomous senior game development studio.
• The creator suggests this is likely their best prompt.

Observed Output / Features

The model generates many systems during development, including:

• Chunk/world generation
• Inventory
• Creatures/mobs
• Raycasting
• Players
• Save/settings
• Textures
• Particles
• Audio

In-game verification highlights:

• Starts with a survival-like flow (e.g., “create new world” and “survival”).
• Visual quality appears improved (the creator mentions shadows and graphics looking “better than actual Minecraft”).
• Sound effects trigger.
• Environmental effects: grass sways; depth-of-field/density-style effects.
• Correct hand/UI placement (hand appears in the right corner).
• Break animation looks good.
• Mobs work: pigs have faces; zombies spawn, can attack, and can be killed.

Limitations / Critiques

Key issues mentioned:

• Blocks do not drop (breaking blocks doesn’t yield expected block items).
• Placing/adding blocks is not fully functioning.
• Controls feel bugged:
  • Movement depends on camera/looking direction.
  • The creator describes it as not smooth or accurate.
• A crafting system may exist, but the creator didn’t fully validate completion.

Cost / Time Mentioned

• Total cost: $50
  • $40 subscription
  • $10 usage credits
• Minecraft generation took about 2 hours (while the creator watched it build).
• Comparison to prior AI:
  • Fable 5 cost: $20
  • Fable 5 time: ~30 minutes
  • Creator claims Kimi K3 output looks more like Minecraft.

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Game 2: Fortnite (“Drop Zone Royale”)

Approach

• Uses a pre-made prompt intended to generate a Fortnite-like experience, including:
  • “add all the features from Fortnite”
  • “as close to Fortnite as possible”

Observed Output / Features

The game launches as something described as first-person Fortnite, featuring:

• A “spinny” background/scene style
• High-quality rendering option (quality set to high)
• Loot system:
  • Chests with an SMG in the loadout
• Kill animations (described positively)
• Storm/circle mechanics (creator notes the circle closing)
• Building works:
  • Walls and at least some ramps/build pieces
• Materials gathering (wood/brick)

Limitations / Critiques

Main issues mentioned:

• Controls still feel bugged.
• First-person presentation differs from Fortnite’s usual third-person style (creator labels this a downside).
• Building UX problem:
  • They can build walls and “cranking 90s,” but placing a ramp fails (“can’t put the ramp down”).

Additional gameplay complaint:

• They die quickly and can’t survive the storm.

Score / Takeaway

• Creator rates it 8/10.
• They consider it comparable to the competitor’s Fortnite clone in features.
• Ends with a tie-like impression between Kimi K3 and Fable 5 for Fortnite specifically.

Cost / Time Mentioned

• Another build taking about ~2 hours (per the creator’s narration).

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Game 3: GTA-like Sandbox (“Sunset City” / Open City Sandbox)

Approach

• A third prompt generates a GTA-like environment and mechanics.
• The creator avoids exceeding rate limits (waiting for reset if needed).
• Presented as the final test, “as long as it beats Fable 5.”

Observed Output / Features

• Completed in about ~1 hour.
• Presented as Sunset City / an open city sandbox.
• Preview uses medium graphics settings.

Controls listed (and described as functional):

• WASD move
• Shift sprint
• Space jump
• Handbrake
• E enter/exit car
• Right mouse aim
• Left mouse shoot
• F melee
• Esc pause

GTA-like behaviors:

• Cars work (enter/steal vehicles)
• Shooting works
• Street textures included
• Lighting changes time (turns night)
• UI looks better than prior AI output
• Police appear and respond; police remove the player from property

Limitations / Comparison

• Creator claims Fable 5 had worse GTA controls.
• Kimi K3 controls are described as “actually really good.”
• Creator also notes lighting is slightly better.
• Overall impression: Kimi K3 appears more powerful given cost and features.

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Overall Conclusion / Analysis (As Given in the Subtitles)

The creator emphasizes:

• Kimi K3 produces highly complete game systems, including:
  • graphics, world generation, gameplay loops, UI, audio, particles, mobs
• Output quality is often more like the real game than the competitor’s versions.
• Kimi K3 is cheaper than Cloud Fable 5 while being “more powerful,” per the creator’s claim.
• Final “crown” result:
  • Minecraft and Fortnite are partially tied
  • The GTA-like sandbox shows clearer superiority, especially in controls and functionality.

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Main Speakers / Sources

• Main speaker: the YouTube reviewer/creator narrating and testing Kimi K3 in VS Code.
• AI systems evaluated:
  • Kimi K3 (in a VS Code “Kimi code environment”)
  • “Fable 5” (the competitor model referenced throughout)