How should you choose between ChatGPT, Claude, Gemini, and Perplexity?

There is no single answer to “Which model is best?” Give each tool the same real task and context, then score accuracy, instruction following, language quality, speed, source quality, and cost separately. Give more weight to your main workload, such as long documents, code, creative writing, or current research.

Use at least five different inputs rather than one showcase example. Keep sensitive information out of the test. The Top 100 comparison can narrow the field, but a small, reproducible test using your own work should make the final decision.