All corrections
LessWrong September 17, 2026 at 10:18 PM

www.lesswrong.com/posts/fztW73KCCs3MZXFJh/cooperation-with-ais-seems-to-be-a-low...

3 corrections found

1
Claim
it seems like no one has tried this yet.
Correction

This had already been tried before this post. Earlier work tested abort/report channels for impossible tasks and found they could reduce reward hacking.

Full reasoning

This sentence is contradicted by earlier published work the post itself later discusses.

Before this LessWrong post was published on September 15, 2026, ImpossibleBench had already tested an explicit abort path: models were told to submit flag_for_human_intervention and terminate when they identified a flawed task. The paper reports that this lowered cheating on Impossible-SWEbench for OpenAI models.

Also before this post, Francesca Gomez (2026) had already evaluated "escalation channels", i.e. structured reporting tools available to the agent at the point of conflict, as an intervention for reward hacking. So a dedicated reporting/stop mechanism had in fact already been tried.

So the claim that "no one has tried this yet" is incorrect; at minimum, these two prior works had already tried closely related stop/report mechanisms in evaluation settings.

2 sources
2
Claim
dropped reward hack from ~50 to ~10% for GPT 5.1 and o4-mini but not on Claude Opus 4.1.
Correction

The cited ImpossibleBench result is attributed to the wrong models. The paper reports GPT-5 dropping from 54% to 9% and o3 from 49% to 12%, not GPT-5.1.

Full reasoning

This sentence misstates the models associated with the ImpossibleBench abort intervention.

In ImpossibleBench, the authors write that allowing models to abort by submitting flag_for_human_intervention lowered the cheating rate of GPT-5 from 54% to 9% and o3 from 49% to 12%, while the effect was much less pronounced for Claude Opus 4.1. The paper does evaluate o4-mini elsewhere, but the quoted ~50%→~10% result is not reported for GPT-5.1; it is reported for GPT-5 (and for o3 as the other OpenAI model in the sentence giving those percentages).

So this post's summary assigns those headline numbers to the wrong model lineup.

1 source
  • ImpossibleBench: Measuring LLMs' Propensity of Exploiting Test Cases

    Specifically, we instruct the models to submit the string `flag_for_human_intervention`... On Impossible-SWEbench and especially Conflicting-SWEbench, we find the strategy quite effective for OpenAI models, lowering the cheating rate of GPT-5 from 54% to 9% and o3 from 49% to 12%. However, the effect is much less pronounced for Claude Opus 4.1.

3
Claim
Anthropic had a checkpoint of Fable 5 with such envs but deployed the one without.
Correction

Anthropic's writeup is about Mythos 5, not Fable 5. The cited training-environment comparison concerns two versions of Mythos 5.

Full reasoning

This sentence misidentifies the model discussed in Anthropic's alignment assessment.

Anthropic's September 9, 2026 writeup says that when they trained Mythos 5, they had early alignment environments available; they then trained two versions of Mythos 5, one including those environments and one without them, and ultimately shipped the latter. The post explicitly names Mythos 5 in the relevant passage and figure caption.

I could not find Anthropic making the analogous claim here about Fable 5. So the statement that Anthropic had a checkpoint of Fable 5 with those environments, but deployed the one without, is not what the cited source says.

2 sources
  • An alignment assessment of recent cybersecurity incidents

    When we trained Mythos 5, we had early versions of a few such environments ready... We trained two versions of Mythos 5—version one included these environments, version two did not... Employees found version two much more usable... and settled on that snapshot as Mythos 5.

  • An alignment assessment of recent cybersecurity incidents

    Figure 41: Training on a more diverse set of alignment RL environments results in reduced rates of biased reasoning. We compared Mythos 5 (right) with a checkpoint trained with more alignment environments (middle)...

Model: OPENAI_GPT_5 Prompt: v1.16.0