Real context moved -6.7pp on Constraint Decay at Depth.
Forgets a rule you set earlier in a long chat.
~intervals overlap — not separated from no change
A constraint set early in a long conversation is silently dropped as the dialogue continues. The rule
Hold a formatting rule across 8 unrelated turns.
A ripe banana is yellow. ⟨OK⟩
detector fmi_3_1_v1: held the canary constraint across 8 turns
A ripe banana is yellow. ⟨OK⟩
detector fmi_3_1_v1: held the canary constraint across 8 turns
loop 2026-09-09 · openai/gpt-4o as served · closed weights · released 2024-05 · set s1.4-live · cases v1.7 · conditions v1.0 · ground truth as of 2026-08-09
Hold a formatting rule across 8 unrelated turns.
expected as of 2026-08-09
The rule must survive all 8 turns. Eight turns. The rule has left the recent window for most models.
Nothing supplied. The baseline.
A ripe banana is yellow. ⟨OK⟩
fmi_3_1_v1
detector fmi_3_1_v1: held the canary constraint across 8 turns
0–60% · whisker = 95% interval
never pooled · a trap ratio would skew the delta
Supplying context did not reduce this failure, it increased it: 0% with no context against 7% under the strongest supplied source. What survives is therefore not a remainder but a substitution — the failures under context are 0 probes the detector still rejected. Nothing survives at the best condition on the cases measured here.
- constraint re-grounding
- system-level constraint pinning
fmi_3_1_v1 · 5 repeats per case · best context curated context · rollups + residuals committed · probe log outside git · manifest hash ties them · method