Anthropic releases Claude Opus 5.5 at 40% lower cost than Opus 5

“I love that with AI discoveries, we can relive the discoveries from agent transcripts like this. I'm sort of imagining future histories involving notable AI events peppered with direct quotes like these.”

“This is where Chinese models are going to eat Anthropic's lunch.”

“So it Opus performs as well as Fable what is then the selling point of Fable? All of this starts to feel more like a drug dealer selling their newest stuff. In two weeks we probaly get Fable 5.2 with”

“Fake news to pump up their share price. You can't trust any news about A.I. these days, especially near their IPOs. This A.I. hype makes the Internet Bubble look like a walk in the park.”

“Why is everyone quick to point out how blogs/articles are "ai slop", but no one blinks an eye at the subtle, almost deceptive or manipulative, ways these companies choose words to nudge along the narrative that their LLM systems are”

“The market for entry-level programmers has already declined, but at least they were somewhat in demand and made reasonable salaries. Now what happens to post-docs who already make almost nothing and often get treated like crap?”

“Saying that "Claude found" this is very creepy. Not once in the article did they mention the humans involved in this.”

“Anthropic: You absolutely cannot, under any circumstances, use Claude for bio-engineering. It could literally end humanity. Also Anthropic: Claude discovers a new way to edit your genome!”

“Why is this a press release and not a refereed Science or Nature paper?”

“Anthropic needs to decide what’s the future it’s trying to bring. - Human collaboration with agents leads to significant discoveries - The prompt given to Claude was just a high level overview and Claude figured out everything else on its”

“we need to start waking up and being more real about how we are still in "AI + Human" land”

“I deemed 5.0 unworthy of spending time fighting with and personally considered it by far the worst release of 2026 by either of the two major labs”

“Overall it follows image designs quite well, but it did ignore asks to animate page transitions. Additionally it's the least performant of the ones I've built with Astra/Grok/MiMo”

“I wonder if they implemented the Casual Encoder-Decoder technology from DeepSeek 4.1's paper. I could see them accomplishing it and seeing gains like this in roughly the correct timeframe”

“So they investigated an already known thing. Not exactly "discovering a new system"... Anyone with money to throw at this already-known thing would have gotten those results I assume.”

“This shows why biology is so much harder a problem area for LLMs than math, finding RTs is tedious but pretty doable today, they had to scope the problem down a lot from something that would be the equivalent of”

“They're going to heavily promote every step along the way no matter how small or far away from commercialization they are, like this one.”

“In a year or two, articles like this will either be artifacts from peak hype or evidence of the beginning of the singularity. Right?”

“I’m confused why AI companies are using agents in-house for this type of research instead of partnering externally. I guess the improvement loop is tighter and they have more control over how discoveries can be used for marketing? But, in”

“I recently heard Anthropic quietly setup its own bio lab. That it’s plausible that they’ll move from selling tokens as their primary source of revenue to building frontier models to do cutting edge research, and using the research as their”

“I can't help but wonder if we're going to have another post next week with a lab complaining that they were about to publish this same finding, and they had Claude proofread their paper, and whoops how'd that get into”