ChatGPT is cheaper at $8/mo, against $20/mo.
OpenAI's assistant for chat, multi-step work and coding
Pick ChatGPT if you want one assistant that does everything, from drafting to image generation to tool use. Pick Perplexity if the job is research: it answers with sources attached, which is what you need when the output has to be checkable. Both are $20/mo, so plenty of people run ChatGPT as the daily driver and Perplexity as the fact-finding front end.
| Attribute | ChatGPT | Perplexity |
|---|---|---|
| Category | General-purpose LLM | Research engine |
| Citations | Sometimes, when browsing | Sources on every answer by default |
| Image generation | Yes | Yes, on Pro |
| Paid tier | $20/mo Plus | $20/mo Pro |
| API pricing | $2.50/M tokens | Tier-based |
Pick ChatGPT if you want one assistant that does everything, from drafting to image generation to tool use. Pick Perplexity if the job is research: it answers with sources attached, which is what you need when the output has to be checkable. Both are $20/mo, so plenty of people run ChatGPT as the daily driver and Perplexity as the fact-finding front end.
ChatGPT, at $8/mo against $20/mo.
OpenAI's assistant for chat, multi-step work and coding. It sits in the llms category, and ships in 1 tested stack here.
AI-native research engine with citations. It sits in the research category, and ships in 4 tested stacks here.
They are alternatives at the same step, so most stacks pick one or the other. No aistack.sh stack uses both today, though nothing prevents a custom workflow.
Beyond each other, ChatGPT's closest alternatives are Claude, Gemini. Perplexity's closest alternatives are Claude, Gemini.