Head to head · Chat & research · updated Oct 15, 2026
ChatGPT vs Perplexity
ChatGPT scores 83 to Perplexity's 58 on public evidence for deep research & AI search, and they rank #1 and #3 there. Both are free to start. Numbers below are the same public signals the ranking uses, recomputed nightly — nothing here is sponsored.
ChatGPT
OpenAI's general-purpose chat assistant with web browsing, file analysis, image generation and voice.
+ The broadest feature set in one place: Deep Research, code-executing data analysis on uploaded spreadsheets, voice mode and a huge library of custom GPTs.
− Free and Plus tiers hit message caps on the best models at busy times, and answers can be confidently wrong without citations unless you ask it to search.
Perplexity
An answer engine that searches the web and returns a synthesized reply with inline citations.
+ Every answer comes with clickable sources, and Pro lets you switch between frontier models from OpenAI, Anthropic and Google.
− Citations sometimes do not actually support the sentence they are attached to, so you still have to click through for anything important.
Side by side
public evidence| ChatGPT | Perplexity | |
|---|---|---|
| Evidence score / 100 | 83 | 58 |
| GitHub stars | closed source | closed source |
| Hacker News stories, 30d | 245 | 20 |
| Release-feed mentions, 30d | 14 | 1 |
| Last activity | 0 days ago | 0 days ago |
| Pricing | Free tier · Plus $20/mo, Pro $200/mo | Free tier · Pro $20/mo |
| Platforms | web, mac, windows, ios, android, api | web, mac, windows, ios, android, api, chrome-extension |
| Maker | OpenAI | Perplexity AI |
Which one?
Pick ChatGPT if
- you want the stronger public evidence (83 vs 58)
Best for an all-round first assistant to try.
Pick Perplexity if
- you need it on chrome-extension
Best for cited answers for quick research.