ChatGPT Deep Research
An agentic mode that browses for many minutes and returns a cited report.
Full ChatGPT Deep Research record →Head to head
ChatGPT Deep Research vs Perplexity
ChatGPT Deep Research (OpenAI) and Perplexity (Perplexity) both sit in Search & Research. ChatGPT Deep Research shipped more tracked changes in the last 30 days (5 vs 3). Every value below comes from the latest crawl of the vendors' own pages.
| Attribute | ChatGPT Deep Research OpenAI | Perplexity Perplexity |
|---|---|---|
| Segment | Search & Research | Search & Research |
| Version | gpt-6-astra | Sonar API |
| Entry cost | from $20/mo | from $20/mo |
| Pricing tiers | Free free · Plus $20 · Pro $200 | Free free · Pro $20 · Max $200 · Enterprise Pro $40 |
| Model stack | GPT-5.2 Thinking · gpt-5.6 · gpt-6-astra · o3 (optimized version) · o4-mini (lightweight version) | Claude Opus 4.5 · Frontier Models · Gemini 3 Pro · GPT-5.2 · Sonar |
| Context window | 196K tokens | Varies by model |
| Public API | ||
| Routes models | ||
| Changes / 30d | 5 | 3 |
| Origin | Global | Global |
| Capabilities | Multi-step browsing, Cited reports, Python analysis, File and image reading, Deep research, Specialized models, Web search, Agents | Cited answers, Deep research, Comet browser, Spaces, Shopping, Focus modes, Gateway API, Agent API |
Perplexity
Conversational search that cites its sources and offers deep research modes.
Full Perplexity record →