From Haiku to 'Overwhelmingly Large Narrative Unit': extrapolating Anthropic's model names

Anthropic went Haiku → Sonnet → Opus → Fable → Mythos: poems to enterprise-scale narrative objects. One blogger extrapolated the rest of the lineup, and the thread piled on with names funnier than the post's.

In brief

The invented roster runs to 'Cinematic Universe (Director's Cut): same answer, 42% more tokens' and 'Diatribe: Sonnet, but angry.'

A commenter decoded the literary theme as a Lovecraft reference — and hoped future models 'will be kind enough not to behave like malevolent gods.'

The premise: poems become franchises

Sam Wilkinson's post takes Anthropic's naming progression — Haiku, Sonnet, Opus, then Fable and Mythos — and reads it as a company "progressing from poems to enterprise-scale narrative objects." From there he extrapolates a full future lineup: Aphorism, Marginalia, Diatribe, Treatise, Saga, Lore, Cinematic Universe, Terms of Service, Overwhelmingly Large Narrative Unit, Omnibus. The jokes are in the glosses — "Cinematic Universe (Director's Cut): Same answer, 42% more tokens," "Diatribe: Sonnet, but angry," and an Overwhelmingly Large Narrative Unit so big it requires "a 'previously on' segment prior to usage."

The thread out-wrote the post

This is one of those HN threads where the comments are the real content. The most decorated contribution came from a developer-of-35-years with a full alternate roster, each name a complete bit:

"Serial (produces an incredibly exciting response which ends in a cliffhanger that withholds the answer) · Prequel (instead of responding, it provides the full backstory leading up to your question) · Yarn (maximizes output tokens by taking a long winding route) · Head Canon (answers using its own entertainingly weird theories) · Oeuvre (for every question, it produces a diverse but cohesive body of work … each one a heartbreaking masterpiece)." — a former Software Design Director at IDEO

The literary in-jokes that landed

Two community members spotted the references hiding in the naming scheme. One read "Mythos" as horror, not just literature:

"It's almost certainly a reference to Lovecraft actually … Hopefully future models will be kind enough not to behave like malevolent gods." — qsort

Another caught a sci-fi homage in Wilkinson's "Overwhelmingly Large Narrative Unit":

"Overwhelmingly Large Narrative Unit — I miss Iain M Banks. Thanks for this lovely little nod to the Culture" — the director of Lambda Cambridge

And one regular turned the naming into a comparative-personality test across labs, lining up Anthropic's tidy poems against OpenAI's {o1, 4o, 3.5, 5.5} and the rest: "The relative personalities of the orgs involved show somewhat in their naming," ending with a wish that "Samsung isn't in the mix. I would have liked to have used a model named Samsung Galaxy S10+ 5G Lite."

The serious dig hiding in the comedy

Even a joke thread found the week's sore spot. One high-karma commenter used it to land the same complaint that's dogging Fable elsewhere on the front page:

"Anthropic intentionally degrading responses shows you they're also focusing on the wrong things. Rather than producing the best model possible, they're nerfing their models' capabilities." — exabrial

That's the quiet payload under the wordplay. A naming joke works because the names feel like a company that takes craft seriously about small things — which is exactly the reputation the same crowd is, this week, arguing it has stopped earning.

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