I tried replacing Claude with Gemini, ChatGPT, and Perplexity for a month – here's the only one worth paying for

A month-long experiment replacing Claude with Gemini, ChatGPT, and Perplexity for everyday tasks including research, writing, coding, and brainstorming. Gemini stood out for Android integration but felt inconsistent and weaker on desktop. Perplexity excelled at research and sourcing but lacked breadth for general use. ChatGPT emerged as the winner, offering the best balance of writing quality, app integrations, desktop experience, and coding capabilities via Codex — making it the only service deemed worth the $20/month subscription.