Short answer
Keep ChatGPT Plus if your main need is a general AI chat assistant. Consider Google AI Ultra when Google-specific benefits matter: Gemini usage, Antigravity coding, Flow video generation, AI Studio prototyping, YouTube Premium, and large Google storage.
Best fit by workflow
Use case
Google AI Ultra is stronger when...
ChatGPT Plus is stronger when...
Daily assistant
You live in Google products and need Gemini deeply available.
You mainly want broad chat, writing, brainstorming, and general analysis.
Coding
You want to test Google's Antigravity, Jules, or AI Studio workflows.
You already have a stable OpenAI-based coding workflow.
Video and media
Flow, Veo-style video workflows, and Google media tools are central to your output.
Your media work is occasional or handled by another specialized tool.
Bundle value
You value YouTube Premium, Google storage, and Google Home benefits.
You only care about the AI model and do not use the bundle.
When paying for both can make sense
- You use one plan for general reasoning and another for Google-native work.
- You regularly switch between coding, research, video, storage, and document workflows.
- Your monthly time saved is clearly higher than the combined subscription cost.
When you should avoid paying for both
- Your use is mostly casual chat, summaries, and occasional writing.
- You do not use YouTube Premium, Google storage, Flow, AI Studio, or Antigravity.
- You cannot point to a recurring weekly workflow that Ultra improves.