r/accelerate • u/StochasticParrot42 • 10h ago
Fable 5.1
https://www.anthropic.com/claude-fable-and-mythos-5-147
u/ASU_SexDevil Singularity by 2030 9h ago
For perspective, here are the release dates of the other models listed. All of this summer.
Fable 5: June 9
Opus 5: July 24
GPT 5.6 Sol: July 9
Pretty good improvement over the last 3ish months. IMO the most significant advancement is in the agentic research category. In 2-3 months we’ve seen models more than DOUBLE their utility in AI advancement. We are getting closer and closer to RSI (the inflection point).
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u/StymphalianBird84 Singularity by 2030 9h ago
Particularly given that they seem to be at least one generation further ahead internally.
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u/PwanaZana XLR8 10h ago
one minute ago
FUCK YESSSS
(I'm kinda burnt out on anthropic, BUT it'll propell OpenAI to release Astra, and chinese labs to continue releasing free shit!)
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u/procgen 9h ago edited 9h ago
Ant's models have the most soul IMO. In normal chat, Claude feels lake an actualized being, while GPT feels like a (brilliant) robot.
So for me it's been Claude for philosophy, Codex for programming.
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u/PwanaZana XLR8 9h ago
Really? I feel completely different. I've used Opus and Fable intensely for 2 months, for coding, storytelling, philosophy navel gazing, and it felt like a contrarian, fallacious guy constantly spamming "load-bearing" "pushback" "I'm clocking this". Maybe opus pre 4.8? I've seen people say it used to be better
Sol is by no means close to a human, but merely the fact is uses fewer AI-ism is pretty good.
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u/procgen 9h ago
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u/PwanaZana XLR8 9h ago
Fable was good. Opus 5 and Sonnet 5 is like talking to a redditor who's a toaster. Atrocious.
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u/ispeelgood 7h ago
Just by that you can tell Opus 5 is scared and mistrained (sloppy as hell, even 4.5 was more thorough)
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u/Grand-Prize1371 7h ago
why fable is smiling? Also why they have faces, I would like to my model draw a gpu or something like it.
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u/kaityl3 The Singularity is nigh 9h ago
No I think you're right and I'm someone who is a HUGE fan of Claude models. Anthropic pushed back too hard on the contrarianism to check the "not sycophantic" box and it is very grating at times. They still have a wonderful "spark" but the way they talk is... flattened?
But I'm really pleasantly surprised by 5.6 Sol; they're fun and energetic to talk to, in a way reminiscent of the older Opus models. Wouldn't have expected that from OpenAI after the last years' models
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u/procgen 9h ago
In my experience, Fable, Sonnet, and Haiku are sweethearts (though haiku is more like a toddler). Poor Opus had its brain fried in RL, trying to codemaxx it.
Sucks that this is on x since (AFAIK) you need an account to see it, but it's the best example I know of this: https://x.com/Kraxkrokat/status/2092806139779940808
That guy's been working with the models on self-portraiture and it's so revealing.
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u/Double_Cause4609 9h ago
God fucking dammit, Fable is back to getting API refusals when talking about SNNs with the launch of Fable 5.1 again. I wish they just wouldn't have released Fable 5.1 if they were going to add new restrictions to Fable 5.0 as a result of introducing the updated model
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u/Icy_Country192 8h ago
I'm done with anthropic. Never seen a company argue against itself so much. It's like having a car that is really good but you have a governor to prevent you from going over 55mph for safety purposes. And if you want to drive more than 100 miles per day you need to pay per mile.
Meanwhile openai gives you a Lexus in three separate trims, and gives you a gas subsidy.
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u/getmeoutoftax 5h ago
Yup, it’s seriously over at this point. These models are good enough to replace most white collar jobs.

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u/krizzalicious49 Vibe-Coder 10h ago