Gemini 4 Carbon vs Claude Fable 5.2 (Fully Tested)
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In this video, I'll be telling you about Gemini 4 Carbon, Google's new top model that became broadly available one day after Anthropic released Claude Fable 5.2. I'll go through what Google shipped, the pricing, Google's and Anthropic's benchmark tables, and what Artificial Analysis and Vals measured. Then I'll put both models through the same six KingBench 4 app builds, show you what each one built, what it cost, and how Carbon behaves while it works. Finally, I'll tell you whether Google is really behind in the AI race and which model I would use for what.
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Key Takeaways:
🚀 Gemini 4 Carbon became broadly available on November 10, one day after Claude Fable 5.2, and Google's own benchmark table still compares it with Fable 5.1.
💸 Carbon costs $2 per million input tokens and $10 per million output tokens until November 30, then doubles to $4 and $20, while Fable 5.2 costs $8 and $40.
📊 On KingBench 4, Carbon scores 32 out of 60 (53.3%), which is eighth out of 13 models, while Fable 5.2 is first at 70%.
🧠 Carbon did not beat Gemini 4 Argon, its own base model, which scored 54.3% on the same six builds.
🎯 Pokémon Red is Carbon's best build at 8.2 against Fable's 8.4, and the 3D room designer is the biggest gap at 6.3 against 9.2.
⚡ All six Carbon builds cost about $23 and used 76 million tokens, while Fable used 212 million tokens and cost about $222.
⚠️ Every one of Carbon's six final messages claims at least one feature that the reviewer found broken or overstated.
🔍 Carbon only tests through tests it wrote itself, and it never clicked through the browser apps or played its own Pokémon game.
👥 Vals has the two models about 1 point apart, and Carbon leads on finance, legal research and tax work.
✅ Use Fable 5.2 when the result has to work, Carbon for cheap and fast first versions that you check yourself, and Argon for everyday coding on Google's side. Receive SMS online on sms24.me
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