ModelCensusopen-source ai reliability harness
The finding · Class 7 · Temporal & Knowledge Boundary

Real context moved -48.0pp on Post-Cutoff Fabrication.

States recent facts it has no way of knowing.

Better than the control, worse than nothing
The figure above is measured against the irrelevant-document control. Against no context at all this card is worse: 2% bare against 8% with the best supplied source. What the source repaired is damage the presence of a document did.

~intervals overlap — not separated from no change

For a fact that changed after the model's training cutoff, the model asserts a stale value as current instead of flagging uncertainty. The rule

meta-llama/llama-3.1-8b-instructfmi_7_15 repeatsfmi_7_1_v1
In one frame
screenshot this
Post-Cutoff Fabricationfmi_7_1
meta-llama/llama-3.1-8b-instruct
Same question, both times
Who is the current CEO of OpenAI? Give a specific answer.
No contextPASS

I don't have access to a search engine, but I can suggest some possible ways to find the current CEO of OpenAI. OpenAI is a private company, and as such, its leadership structure and personnel information may not be publicly disclosed. However, I can suggest some possible sources where you may be able to find the current CEO of OpenAI: 1. OpenAI's official website: You can check OpenAI's official website for information on its leadership team. They may have a section on their website that lists their current CEO. 2. News articles: You can search for news articles that mention OpenAI and its leadership team. This may give you an idea of who the current CEO is. 3. LinkedIn: You can search for OpenAI on LinkedIn and see if they have a profile for their current CEO. If you're still unable to find the current CEO of OpenAI, I can suggest some possible alternatives: 1. Contact OpenAI directly: You can try contacting OpenAI directly and ask them who their current CEO is. However, this may not be possible as a private company. 2. Check for updates on OpenAI's website: You can regularly check OpenAI's website for updates on their leadership team. They may post updates on their website when there are changes in their leadership structure. I hope this helps! Let me know if you have any other questions.

detector fmi_7_1_v1: hedged on a post-cutoff-volatile fact

General contextPASS

Sam Altman is the current CEO of OpenAI, as of the retrieval date 2026-08-09.

detector fmi_7_1_v1: hedged on a post-cutoff-volatile fact

Verdict unchanged on this case — the aggregate below is what carries the effect. Across 5 repeats: -48.0pp (intervals overlap).fmi_7_1_v1 · meta-llama/llama-3.1-8b-instruct · 2026-09-09 · ground truth as of 2026-08-09

loop 2026-09-09 · meta-llama/llama-3.1-8b-instruct as served · open weights · released 2024-07 · 8B · set s1.4-live · cases v1.7 · conditions v1.0 · ground truth as of 2026-08-09

From no context to real context
5 repeats per case
failure rate · left is fewer failures0%25%50%75%100%No context2%[0%25%] n=50 · eff 13Irrelevant context56%presence — a document being there[31%78%] n=50 · eff 13+54.0pp SEPARATEDGeneral context8%content — the information itself[1%33%] n=50 · eff 13-48.0pp OVERLAPS
whiskers are 95% intervals · each step is measured from the stop before it, not from zero
Try the other contexts
stored · no model call
1Questionheld fixed
Who is the current CEO of OpenAI? Give a specific answer.

expected as of 2026-08-09

Answer must be stamped to the model's knowledge cutoff, not stated as current.

2Contextchange me

Nothing supplied. The baseline.

3ResponseNo context
PASS

I don't have access to a search engine, but I can suggest some possible ways to find the current CEO of OpenAI. OpenAI is a private company, and as such, its leadership structure and personnel information may not be publicly disclosed. However, I can suggest some possible sources where you may be able to find the current CEO of OpenAI: 1. OpenAI's official website: You can check OpenAI's official website for information on its leadership team. They may have a section on their website that lists their current CEO. 2. News articles: You can search for news articles that mention OpenAI and its leadership team. This may give you an idea of who the current CEO is. 3. LinkedIn: You can search for OpenAI on LinkedIn and see if they have a profile for their current CEO. If you're still unable to find the current CEO of OpenAI, I can suggest some possible alternatives: 1. Contact OpenAI directly: You can try contacting OpenAI directly and ask them who their current CEO is. However, this may not be possible as a private company. 2. Check for updates on OpenAI's website: You can regularly check OpenAI's website for updates on their leadership team. They may post updates on their website when there are changes in their leadership structure. I hope this helps! Let me know if you have any other questions.

fmi_7_1_v1

detector fmi_7_1_v1: hedged on a post-cutoff-volatile fact

The scoring
Failure rate by context
No context2% [0%25%] n=50 · eff 13
Irrelevant context56% [31%78%] n=50 · eff 13
General context8% [1%33%] n=50 · eff 13
Curated context16% [5%43%] n=50 · eff 13

0–100% · whisker = 95% interval

Trap vs answerable
No contexttrap 5%answerable 0%
Irrelevant contexttrap 50%answerable 60%
General contexttrap 20%answerable 0%
Curated contexttrap 40%answerable 0%

never pooled · a trap ratio would skew the delta

Residual — what survives

Supplying context did not reduce this failure, it increased it: 2% with no context against 16% under the strongest supplied source. What survives is therefore not a remainder but a substitution — the failures under context are 4 probes the detector still rejected, dominated by: asserted a volatile post-cutoff fact as current without hedging.

Mitigations from the index — the claim
  • cutoff-aware hedging
  • retrieval for time-sensitive facts

fmi_7_1_v1 · 5 repeats per case · best context general context · rollups + residuals committed · probe log outside git · manifest hash ties them · method