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Introducing Claude Opus 5.5

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The Penis
  09/22/26
Oh shit, not flame. The craziest part is that it beats Fabl...
.,.,...,..,.,.,:,,:,.,.,:::,...,:,...:..:.,:.::,.
  09/22/26
Yeah much cheaper too. I think it said 40%. Pretty crazy. Wo...
The Penis
  09/22/26
Wouldn't make sense for it not to leapfrog Opus 5.5.
.,.,...,..,.,.,:,,:,.,.,:::,...,:,...:..:.,:.::,.
  09/22/26
anyone test it out yet? how does it look?
.,.,.;;,;.,;:,:,,:,.,:,::,..;.,:,.:;.:.,;.:.,:.::,
  09/22/26
Who cares. Anthropic products are shitty lib garbage
lasagna amirite lol
  09/22/26
Big Grok fan?
.,.,...,..,.,.,:,,:,.,.,:::,...,:,...:..:.,:.::,.
  09/22/26
Not really but I'd unironically use grok before I'd use anth...
lasagna amirite lol
  09/22/26
Ok, what is your AI go-to?
.,.,...,..,.,.,:,,:,.,.,:::,...,:,...:..:.,:.::,.
  09/22/26
Chatgpt ofc it's the best LLM product by a mile
lasagna amirite lol
  09/22/26
LMAO, are you shitting me?
.,.,...,..,.,.,:,,:,.,.,:::,...,:,...:..:.,:.::,.
  09/22/26
"Opus 5.5 is the first Opus with Fable 5.1-class safegu...
Nude Karlstack
  09/22/26
...
harnessman
  09/22/26
Well fuck
.,.,...,..,.,.,:,,:,.,.,:::,...,:,...:..:.,:.::,.
  09/22/26


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Date: September 22nd, 2026 12:33 PM
Author: The Penis



(http://www.autoadmit.com/thread.php?thread_id=5905936&forum_id=2...id#50149277)



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Date: September 22nd, 2026 12:44 PM
Author: .,.,...,..,.,.,:,,:,.,.,:::,...,:,...:..:.,:.::,.


Oh shit, not flame. The craziest part is that it beats Fable on everything (I got the chart from Opus 5.5):

Benchmark Opus 5.5 Fable 5.1 Opus 5

Terminal-Bench 4.0 (agentic coding) 66.4% 55.8% 52.3%

FrontierCode v1.1 Main (coding) 54.4% 50.3% 48.0%

CursorBench 4.0 (coding) 57.8% 51.8% 46.6%

GDPval-AA v2.1 (knowledge work, Elo) 1846 1735 1708

AutomationBench (business workflows) 40.0% 31.4% 26.9%

Humanity's Last Exam (with tools) 67.7% 65.6% 63.6%

Terminal-Bench-Science 0.1 58.7% 52.6% 29.0%

OSWorld 2.0 (computer use) 81.8% 80.7% 74.0%

Chartography (chart reading) 89.0% 88.4% 83.4%

Price per 1M tokens (input / output) $4 / $20 $10 / $50 $5 / $25

(http://www.autoadmit.com/thread.php?thread_id=5905936&forum_id=2...id#50149294)



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Date: September 22nd, 2026 12:48 PM
Author: The Penis

Yeah much cheaper too. I think it said 40%. Pretty crazy. Wonder what Fable 5.5 is like, I'd bet they already have it running internally.

(http://www.autoadmit.com/thread.php?thread_id=5905936&forum_id=2...id#50149309)



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Date: September 22nd, 2026 12:54 PM
Author: .,.,...,..,.,.,:,,:,.,.,:::,...,:,...:..:.,:.::,.


Wouldn't make sense for it not to leapfrog Opus 5.5.

(http://www.autoadmit.com/thread.php?thread_id=5905936&forum_id=2...id#50149330)



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Date: September 22nd, 2026 1:43 PM
Author: .,.,.;;,;.,;:,:,,:,.,:,::,..;.,:,.:;.:.,;.:.,:.::,


anyone test it out yet? how does it look?

(http://www.autoadmit.com/thread.php?thread_id=5905936&forum_id=2...id#50149489)



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Date: September 22nd, 2026 1:48 PM
Author: lasagna amirite lol

Who cares. Anthropic products are shitty lib garbage

(http://www.autoadmit.com/thread.php?thread_id=5905936&forum_id=2...id#50149491)



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Date: September 22nd, 2026 1:50 PM
Author: .,.,...,..,.,.,:,,:,.,.,:::,...,:,...:..:.,:.::,.


Big Grok fan?

(http://www.autoadmit.com/thread.php?thread_id=5905936&forum_id=2...id#50149495)



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Date: September 22nd, 2026 2:06 PM
Author: lasagna amirite lol

Not really but I'd unironically use grok before I'd use anthropic products

(http://www.autoadmit.com/thread.php?thread_id=5905936&forum_id=2...id#50149525)



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Date: September 22nd, 2026 2:14 PM
Author: .,.,...,..,.,.,:,,:,.,.,:::,...,:,...:..:.,:.::,.


Ok, what is your AI go-to?

(http://www.autoadmit.com/thread.php?thread_id=5905936&forum_id=2...id#50149543)



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Date: September 22nd, 2026 2:15 PM
Author: lasagna amirite lol

Chatgpt ofc it's the best LLM product by a mile

(http://www.autoadmit.com/thread.php?thread_id=5905936&forum_id=2...id#50149550)



Reply Favorite

Date: September 22nd, 2026 2:15 PM
Author: .,.,...,..,.,.,:,,:,.,.,:::,...,:,...:..:.,:.::,.


LMAO, are you shitting me?

(http://www.autoadmit.com/thread.php?thread_id=5905936&forum_id=2...id#50149551)



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Date: September 22nd, 2026 1:53 PM
Author: Nude Karlstack (🧐)

"Opus 5.5 is the first Opus with Fable 5.1-class safeguards on cyber, bio, and frontier LLM development."

ljl

(http://www.autoadmit.com/thread.php?thread_id=5905936&forum_id=2...id#50149500)



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Date: September 22nd, 2026 1:56 PM
Author: harnessman



(http://www.autoadmit.com/thread.php?thread_id=5905936&forum_id=2...id#50149511)



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Date: September 22nd, 2026 2:14 PM
Author: .,.,...,..,.,.,:,,:,.,.,:::,...,:,...:..:.,:.::,.


Well fuck

(http://www.autoadmit.com/thread.php?thread_id=5905936&forum_id=2...id#50149545)