SIREN AI activity report, September 2026
This month has closed. These numbers will not change.
Key findings
- In September 2026, the SIREN AI activity index averaged 44.0 of 100 across 142 readings.
- The highest SIREN reading of September 2026 was 56.3 at 2026-09-30 14:26:50 UTC; the lowest was 36.8 at 2026-09-26 10:20:14 UTC.
- SIREN spent 100% of September 2026 readings at level 4 (ROUTINE).
- Governance was the most active SIREN pillar in September 2026, averaging 53.4; Attention was the least active at 41.8.
- From its first to its last reading of September 2026, the index moved up 14.0 points, from 40.9 to 54.8.
How many readings landed at each level?
| Level | Readings | Share |
|---|---|---|
| 1 · UNPRECEDENTED | 0 | 0% |
| 2 · ACCELERATED | 0 | 0% |
| 3 · ELEVATED | 0 | 0% |
| 4 · ROUTINE | 142 | 100% |
| 5 · DORMANT | 0 | 0% |
Which pillars were most active?
| Pillar | Mean score (0–100) |
|---|---|
| Capability | 45.6 |
| Compute & Capital | 47.2 |
| Attention | 41.8 |
| Governance | 53.4 |
Where do these numbers come from?
Every figure is computed from the public reading log at /api/history.json, using the formulas on the methodology page. Each hourly reading has a hash-chained receipt you can verify in your browser. SIREN measures how much is happening, not how bad it is. Levels run from 5 (quietest) to 1 (loudest) and describe observable activity tempo against this index’s own record. They are not a probability of harm.
How do I cite this report?
SIREN (2026). AI activity report, September 2026. https://siren.watch/reports/2026-09.html
Free to quote and republish under CC BY 4.0 with a link to this page.