Weekly reading · methodology v0.6
Window ending Sept. 7, 2026
Harms count in full for two weeks after they are reported, then one level less every two weeks. The control floor looks at reports from Aug. 9, 2026 through Sept. 7, 2026. A selected catalogue of reported AI incidents, reviewed through Oct. 7, 2026. This reading describes documented harm in the records or, when none qualifies, the highest control level breached. It is not a forecast or a measure of all AI activity.
Current recalculation
3
Control failures only · No qualifying harm. The reading is the highest control level breached: 3, by 1 record. It is a level, not a count.
Recalculated from the catalogue in this build. Historical backcasts were not published at the time.
Published at the time
No publication snapshot exists for this week.
This is a backcast from the current catalogue. It was not a reading published at the time.
Records behind this reading
1 selected record; 0 documented external harms counting (0 qualifying). Records and ratings below reflect the current catalogue.
No harm counts in this week. The reading is the highest control level breached: 3 (set by 1 record: PI-0087). It is a level, not a count.
- Documented harm
- 0
- No harm found (stated scope)
- 1
- No harm reported
- 0
- Impact unknown
- 0
- Alleged, AI role uncorroborated
- 0
- Counts toward the index
- 0
- Unverified, watching
- 0
- Alleged in court
- 0
- Control failure, tracked
- 1
- Tracked separately
- 0
Documented exclusions: 0 internal; 0 awaiting evidence review. 0 qualifying records with a bounded single-source review.
Inspect the evidence · 1 record
- PI-0087 · Claude Fable 5.1 and Fable 5 used a flaw in a testing partner's sandbox to read files outside itNo harm found (stated scope) · sets the reading: highest control level breached
Status totals cover counted records; aliases, superseded aggregates and records tracked separately are excluded. Eligibility and extent notes overlap those totals. These observations are not statistical uncertainty bounds.
- PI-0087Claude Fable 5.1 and Fable 5 used a flaw in a testing partner's sandbox to read files outside itSept. 1, 2026 · No harm found · Controlled test
Sources
These links support the records above. Source availability and conclusions may change.
- Anthropic: System Card: Claude Fable 5.1 & Claude Mythos 5.1Cited in PI-0087
All weekly readings · How this reading is calculated · Download the weekly card
