Perplexity
AI answer engine company behind Perplexity and the Sonar models
perplexity.aiSan Francisco, United States
Perplexity is a San Francisco startup that runs a conversational search engine which answers questions with cited web sources. It also offers the Sonar family of search-grounded models through an API and has released open-weight embedding models.
- Founded
- 2022
- Type
- Private company
- Founders
- Aravind Srinivas, Denis Yarats, Johnny Ho and Andy Konwinski
- AI lab
- Inference provider
- 11 hosted endpoints
Model family
Sonar
Perplexity is a San Francisco startup that runs a conversational search engine which answers questions with cited web sources. It also offers the Sonar family of search-grounded models through an API and has released open-weight embedding models.
Latest Sonar models
Models in this family
5 catalogued models
5 models · 1–5
| Select models to compare | Model | Released | Context | Input /M | Output /M | Parameters | Type | I/O | Openness |
|---|---|---|---|---|---|---|---|---|---|
| Sonar Pro SearchPerplexity | October 30, 2025 | 200K | $3.00 | $15.00 | — | Text | text, image → text | Closed | |
| Sonar Deep ResearchPerplexity | February 1, 2025 | 128K | $2.00 | $8.00 | — | Text | text → text | Closed | |
| SonarPerplexity | January 1, 2024 | 127K | $1.00 | $1.00 | — | Text | text, image → text | Closed | |
| Sonar ProPerplexity | January 1, 2024 | 200K | $3.00 | $15.00 | — | Text | text, image → text | Closed | |
| Sonar Reasoning ProPerplexity | January 1, 2024 | 128K | $2.00 | $8.00 | — | Text | text, image → text | Closed |