Theo Retracts Praise for Gemini 4 Carbon Over Severe Response Delays

At a glance

This video is from the Theo (t3.gg) channel. Theo corrects his earlier mild review of Gemini 4 Carbon and covers the response delays he found in real-world use. Gemini 4 Carbon is an AI model from Google.

Key points

• In real-world tests, Gemini 4 Carbon was about five times slower than competing models.
• It takes over 11 seconds on the server before it starts answering a request.
• In multi-step automated tasks, the delays add up and bring workflows to a halt.
• He criticizes its caching system (storing frequently used data in advance) for a low hit rate that raises operating costs.

Why it matters

It is useful for developers deciding whether to adopt AI models for real work and for anyone weighing their costs.

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