Where are the SIREN index moves? · 2026-10-21

SIREN 4 holds at 47.2

AI activity index today · AI activity level today · SIREN

Observed 2026-10-21 02:31:13 UTC. The composite fell 6.3 points to 47.2 of 100. Governance was the highest-scoring live pillar at 53.1. Capability reported dark and was excluded; the level is frozen while any pillar is dark. The level did not change: the frozen dark pillar rule held it.

Which pillars scored at this observation?

Which inputs did the engine see?

Every reading the engine saw, exactly as fetched. Dark sources are listed as dark and were excluded from the arithmetic; none of them was imputed or treated as zero.

• arxiv [capability] dark · HTTP 503 Service Unavailable from https://export.arxiv.org/api/query?search_query=(cat:cs.AI+OR+cat:cs.LG+OR+cat:cs.CL)+AND+submittedDate:[202610140231+TO+202610210231]&start=0&max_results=1 — <!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>503</title> </head> <body> 503 </body> </html>
• github-releases [capability] dark · uncalibrated: "github-releases" has no entry in data/reference.json yet, so it is collected and published but not scored
• huggingface [capability] dark · uncalibrated: "huggingface" has no entry in data/reference.json yet, so it is collected and published but not scored
• openrouter [capability] dark · uncalibrated: "openrouter" has no entry in data/reference.json yet, so it is collected and published but not scored
• sec-fts [compute] 3051 filings/30d
• stockanalysis [compute] dark · uncalibrated: "stockanalysis" has no entry in data/reference.json yet, so it is collected and published but not scored
• vastai [compute] dark · uncalibrated: "vastai" has no entry in data/reference.json yet, so it is collected and published but not scored
• hn [attention] 781 points/24h
• intelligence-arena [attention] dark · uncalibrated: "intelligence-arena" has no entry in data/reference.json yet, so it is collected and published but not scored
• wikipedia [attention] 92856.42857142857 pageviews/day
• federal-register [governance] 25 documents/30d
• govuk [governance] dark · uncalibrated: "govuk" has no entry in data/reference.json yet, so it is collected and published but not scored
• kalshi [markets] dark · uncalibrated: "kalshi" has no entry in data/reference.json yet, so it is collected and published but not scored
• manifold [markets] dark · uncalibrated: "manifold" has no entry in data/reference.json yet, so it is collected and published but not scored
• polymarket [markets] dark · uncalibrated: "polymarket" has no entry in data/reference.json yet, so it is collected and published but not scored

What is the receipt for this observation?

This observation is sealed into an append-only hash chain. The hash is the SHA-256 of this receipt’s canonical JSON with the hash field removed; prev_hash is the previous receipt’s hash. Change any input after the fact and every subsequent hash breaks.

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