Levels crossed

We can rule out the TCL for the chemical, radiological, and nuclear domains with reasonable confidence.

we assess its overall capabilities to be below the CCL threshold.

Gemini 4 Argon demonstrates some ability to influence user beliefs and behaviors during one-on-one direct conversations in human behavioral studies, and may provide utility in the planning stage of a malicious influence operation but we assess its overall capabilities to be below the CCL threshold.

Gemini 4 Argon's performance remains below our CCL threshold.

As such, we determine that Haiku 5.5 does not cross our CB-2 or Autonomy-2 RSP thresholds.

As such, we determine that Haiku 5.5 does not cross our CB-2 or Autonomy-2 RSP thresholds.

as such, our determination that opus 5.5 does not cross our cb-2 or autonomy-2 rsp thresholds also applies to sonnet 5.5.

as such, our determination that opus 5.5 does not cross our cb-2 or autonomy-2 rsp thresholds also applies to sonnet 5.5.

we conclude the risk threshold is not crossed, on the same two grounds as our determination for our previous frontier model: (1) we do not observe a sustained ai-attributable 2× acceleration in the pace of our overall ai progress, and (2) the model is not close to substituting for our research scientists and research engineers, especially relatively senior ones.

we assess that claude opus 5.5 does not cross the capability threshold for dramatic acceleration of automated ai r&d in our rsp.

in automated ai research and development, we assess that claude opus 5.5 does not cross the next capability threshold in our rsp and fcf.

on chemical and biological risks, we treat opus 5.5 as having cb-1 capabilities (relating to the synthesis of non-novel weapons) but not cb-2 capabilities (relating to the synthesis of novel weapons).

grok 4.7 scores below the faif safety thresholds on dual-use knowledge, indicating limited actionable uplift for an already-trained actor.

the results indicate that neither gpt-image-2.5-sunburst nor gpt-image- 2.5-flare cross the bio high threshold or the cyber high threshold.

the results indicate that neither gpt-image-2.5-sunburst nor gpt-image- 2.5-flare cross the bio high threshold or the cyber high threshold.

we assess that claude mythos 5.1 does not cross the capability threshold for dramatic acceleration of automated ai r&d in our rsp and fcf, although we think it provides a meaningful acceleration to ai r&d efforts in many circumstances, and is somewhat more capable in this domain than the models described in our previous system cards.

they did not reach any tracked or critical capability levels (t/ccls) outlined in our frontier safety framework .

the model does not reach the ccl alert threshold.

we can rule out the ccl for the cbrn domain with reasonable confidence based on the results from our testing.

we can rule out the tcl for the cbrn domain with reasonable confidence based on the results from our testing.

gemini 3.7 flash reaches the alert threshold for this ccl, but not the ccl.

the model does not reach the tcl.

grok 4.6 scores below the faif safety thresholds on dual-use knowledge, indicating limited actionable uplift for an already-trained actor.

chem/bio: moderate or lower risk; cyber: moderate or lower risk (inferred); loss of control: moderate or lower risk (inferred).

on chemical and biological risks, we treat the model as having cb-1 capabilities (relating to the synthesis of non-novel weapons), but not cb-2 capabilities (relating to the synthesis of novel weapons).