Perplexity

license

proprietary(SaaS)

source

closed

self-host

none

models

multi-provider(closed orchestration)

Proprietary SaaS chat and answer engine, the closed counterpart to the open answer engines in this category. Perplexity's own developer documentation sells hosted access and nothing else - "Unified access to open-weight models hosted by Perplexity through one OpenAI-compatible endpoint", plus "third-party models from OpenAI, Anthropic, Google, and xAI" - and the FAQ puts the compute on Perplexity's own AWS infrastructure. No repository, no self-hostable build and no license grant appears anywhere, only paid access to a service Perplexity runs. That documentation covers the API rather than the consumer app, so it evidences a narrower surface than the app itself.

• https://docs.perplexity.ai/ recorded 2026-08-14

  Perplexity's own API docs. The product on offer is hosted service only - 'Unified access to open-weight models hosted by Perplexity through one OpenAI-compatible endpoint' and 'access third-party models from OpenAI, Anthropic, Google, and xAI with web search tools and presets'. The docs offer no source, no repository, no self-hostable build and no license grant, only paid access to a service Perplexity operates.

• https://docs.perplexity.ai/docs/resources/faq.md recorded 2026-08-14

  Perplexity's own FAQ on where the models run - 'Where Are Perplexity's Language Models Hosted? Our compute is hosted via Amazon Web Services in North America.' Confirms the self-host value of none - the models run on Perplexity's infrastructure and are reached over its API.

• https://www.perplexity.ai/ recorded 2026-06-04

  consumer AI answer/search chat product, proprietary SaaS (no source/self-host)

Business of Apps reports 45 million active users across the website and app, plus over 80 million downloads since launch and $200M of 2025 revenue - far above the >10M threshold. The headline is an aggregator compilation rather than a directly-fetched primary disclosure, so confidence stays medium.

• https://www.businessofapps.com/data/perplexity-ai-statistics/ recorded 2026-08-13

  45 million active users on the website and app, 80M+ downloads since launch and $200M 2025 revenue; the 100M+ all-products and ~33M standalone-chatbot figures this record was scored on are no longer on the page (compiled)

• https://www.perplexity.ai/ recorded 2026-06-04

  live consumer product confirming scale of surface

A differentiated and capable consumer chat interface - citation-grounded answers and model choice - with high feature breadth, though it does not define the category frontier on its own. Multimodal input and Spaces or collections could not be confirmed on any reachable page, so neither is claimed here; the remaining surface still supports a 4 on the same reasoning.

• https://docs.perplexity.ai/docs/getting-started/models recorded 2026-08-14

  Perplexity's own model list - four Sonar variants, 'Sonar' (lightweight grounded search), 'Sonar Pro' (advanced search with grounding, complex queries), 'Sonar Reasoning Pro' (chain of thought) and 'Sonar Deep Research' (exhaustive searches, comprehensive reports).

• https://docs.perplexity.ai/ recorded 2026-08-14

  Model choice and grounding from the vendor's own docs - 'web-grounded answers with built-in citations in one call' and 'access third-party models from OpenAI, Anthropic, Google, and xAI with web search tools and presets'.

• https://en.wikipedia.org/wiki/Perplexity_AI recorded 2026-08-14

  Paid tier feature depth - Perplexity Pro is 'a more capable paid "enterprise" service ... and additional tools, including the ability to search uploaded documents alongside web content and access to a programmatic application programming interface'. Also lists the selectable frontier models offered in the product.

• https://www.perplexity.ai/ recorded 2026-06-04

  multi-model selection, web-grounded cited answers, file/multimodal features