Both cost $20/month, but ChatGPT Plus is a broad assistant subscription while Perplexity Pro is built around cited search, research and access to advanced models from multiple providers.
ChatGPT offers Free, Go, Plus, and multiple Pro tiers for individual users, with progressively higher access to reasoning, research, coding, image generation, memory, and agentic features.
Better fit when you want one general AI assistant for reasoning, coding, research, files, voice and image generation rather than a research-first search product.
Perplexity combines cited web research with multi-model access, file analysis, content generation, Computer and Comet features across Free, Pro, Education Pro, and Max plans.
Better fit when cited web research, advanced search and choosing among multiple frontier models are more important than centering your workflow on one assistant provider.
Decision matrix
$20
$20
General-purpose assistant
Research/search product with citations and model choice
OpenAI model ecosystem
Multiple frontier providers in one subscription
Included
Core Pro value
Available through ChatGPT research/search features
Core product with cited answers
Codex access included
Not the primary Pro positioning
Included
Included
Not highlighted in current plan record
Limited access
Uploads and analysis
Higher upload/analysis limits
Not a primary differentiator in current record
Connector access
No annual discount recorded in iilib
$200/year ($16.67/mo effective)
No — API billed separately
No — API platform billed separately
Important billing distinction
OpenAI API usage and Perplexity's API Platform are separate billing products. Use subscription comparisons for consumer-plan value and the Workbench calculator for token-based API economics.
Open LLM API Cost Calculator →This comparison uses the same current plan records behind the ChatGPT and Perplexity subscription pages. It focuses on documented product value and avoids pretending that dynamic usage quotas can be reduced to one universal score.