[Perplexity, signed out and incognito (operator default of 2026-10-14). One turn: the prompt 'What is SPXI-gnΩsis?' (the operator: 'same prompt', following the Grok capture of the same day) and one answer; the paste carries no source panel, and 7 citation markers survive as replacement characters at paragraph ends, cut.] You said: What is SPXI-gnΩsis? SPXI-gnΩsis is a paid, AI-assisted service for auditing existing knowledge against its sources and constructing new, source-linked knowledge objects. Its documentation identifies Lee Sharks as the author of its specification and places it within SPXI—“Semantic Packet for eXchange & Indexing.” People can use its website, while AI agents can access it through an API or MCP connection. What it does The service has two main functions: Open an existing composition. It examines a Wikipedia article sentence by sentence against the sources that article cites, recording what the wording preserves, changes, adds, or leaves out. It keeps two model-generated readings and preserves disagreements rather than merging them into a single verdict. It also supports examining captured AI answers against the sources those answers displayed. Construct a knowledge object. It composes a sourced account of a named person, work, institution, concept, or “operator”—its term for an operation that a description may conceal. Each sentence links to claims, and those claims link to quotations located in stored sources. Sources can come from its associated archive and from links supplied with the commission; Wikipedia notability is not required. The underlying idea goes beyond ordinary fact-checking: it asks not just whether a statement has a citation, but how the statement transforms what its source actually says. Its demonstration, for example, examines the shift from Aristotle saying he had no earlier work on syllogizing to draw on to Wikipedia describing a book as “the first work” on the subject. The service records both the interpretation and disagreement about how fully the source supports that wording. What users receive Deliverables include quotations, source metadata and hashes, the separate readings, and audit findings. Readings are retained for reuse; commissions publish a public knowledge-object record in /non, short for “the Negative of the Negative,” under CC BY 4.0. The stated model is that the first caller funds new work and later users can inspect the accumulated results for free. The site offers card payments for people and x402 payments for agents. Its published typical prices, dated October 25, 2026, are about 2¢ per sentence for a basic check and 22¢ for a fuller opening, with a free quote before payment. How to understand its claims In plain language, it is a source-comparison and knowledge-construction service with an emphasis on making the evidence and interpretive steps inspectable. Its “opening” is an analysis, not a guarantee of truth: the readings are model-generated, can disagree, and depend on the sources admitted. The service itself labels its showcased constructed object a draft and explicitly notes when it rests only on its own archive’s papers. These descriptions establish what the service offers, not independent validation of its accuracy.