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Dan McAteer

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@daniel_mac8

I build AI agents for a living and write about it. Writing at attentionheads.blog · Writing @latentspacepod · Agentic Ops @ AnswerRocket
United States attentionheads.blog Joined October 2013
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Dan McAteer Verified account @daniel_mac8
Opus 5.6 aka ‘Model 4’ from the METR RSI report. My guess.

Opus 5.5 was the most capable Claude model for a while, outperforming Fable 5.1. It’s totally plausible.

Finished training last month.
Andrew Curran Verified account @AndrewCurran_ 11h
Anthropic's most capable model remains hidden deep within their tower. Source: Fable/Mythos 5.2 System Card.
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Dan McAteer Verified account @daniel_mac8
I've spent exactly one hour with Fable 5.2.

I am, therefore, a world leading expert.

Do this:

1. Fable 5.2 for planning and judgement
2. Copy the plan, open a new thread
3. Opus 5.5 for execution

You're welcome world.