Perplexity

9 tools · 1 company · 9 verified facts — receipts on every one.

Sonar R1-1776 In-house inference engine TransferEngine (pplx-garden) In-house web index (PerplexityBot) In-house evals (LLM-as-judge) In-house data curation BrowseSafe Internal AI data agents

Company with Perplexity in the stack

Perplexity

All Perplexity facts

Perplexity · Sonar

In-house search model family powering default search.

High confidence

Source last verified Jul 26, 2026 View fact with receipts →
Perplexity · R1-1776

Post-trained open-weights reasoning model with censorship removed.

Medium confidence

Source last verified Jul 26, 2026 View fact with receipts →
Perplexity · In-house inference engine

Custom Rust and CUDA engine serving every query across a multi-cloud GPU fleet.

High confidence

Source last verified Jul 26, 2026 View fact with receipts →
Perplexity · TransferEngine (pplx-garden)

Open-sourced RDMA library powering disaggregated serving of large MoE models.

High confidence

Source last verified Jul 26, 2026 View fact with receipts →
Perplexity · In-house web index (PerplexityBot)

Proprietary crawler and index feeding hybrid lexical and semantic retrieval.

High confidence

Source last verified Jul 26, 2026 View fact with receipts →
Perplexity · In-house evals (LLM-as-judge)

Grades search quality with LLM-as-judge evaluations over public benchmarks.

High confidence

Source last verified Jul 26, 2026 View fact with receipts →
Perplexity · In-house data curation

Curates multilingual post-training datasets with in-house experts.

Medium confidence

Source last verified Jul 26, 2026 View fact with receipts →
Perplexity · BrowseSafe

Fine-tuned classifier detecting prompt-injection attacks in the Comet browser.

High confidence

Source last verified Jul 26, 2026 View fact with receipts →
Perplexity · Internal AI data agents

Internal agents automate end-to-end analytics workflows for the data org.

Medium confidence

Source last verified Jul 26, 2026 View fact with receipts →