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ChatGPT Deep ResearchPerplexity
| Attribute | ChatGPT Deep Research OpenAI | Perplexity Perplexity |
|---|---|---|
| Segment | Search & Research | Search & Research |
| Version | o-series era | Comet era |
| Entry cost | from $20/mo | Free tier, Pro $20/mo |
| Pricing tiers | Plus $20 · Pro $200 · Business $25 | Free free · Pro $20 · Max $200 · Enterprise Pro $40 |
| Model stack | GPT-5.2 Thinking | Sonar · GPT-5.2 · Claude Opus 4.5 · Gemini 3 Pro |
| Context window | 196K tokens | Varies by model |
| Public API | ||
| Routes models | ||
| Changes / 30d | 0 | 2 |
| Origin | Global | Global |
| Capabilities | Multi-step browsing, Cited reports, Python analysis, File and image reading | Cited answers, Deep research, Comet browser, Spaces, Shopping, Focus modes |