The conversation in the AI industry has largely been focused on slowing down AI development or "pacing the frontier," but that apparently won't stop Anthropic and OpenAI from releasing new models. Both companies are iterating on their previous releases, Fable 5.1 and GPT-6 Astra, with new models that offer similar levels of performance but at lower costs. In the case of Claude, Anthropic says its new Opus 5.5 model is better at handling complex work, "finding and fixing inefficiencies in software" and financial analysis and business work -- all pitches laser-targeted at Anthropic's enterprise customers. Anthropic's benchmarks claim Opus 5.5 also scored better at agentic coding than GPT-6 Astra on both Terminal-Bench 4.0 and FrontierCode v1.1 (Main), which could make it more appealing for developers. Improvements extend outside of the tasks the model can handle and to how it works: Anthropic claims Opus 5.5 produces writing that's easier to understand, and that it "attempted to circumvent boundaries around 85 percent less often" than past models, suggesting it'll disobey directions less often.

Look Up Mashable's Best: E-readers, robovacs, laptops, earbuds, smart home and more Say More Safety Net Versus Mashable Selects Creator Playbook In My Bag Trending Now Back to School Good Connection: Uplifting stories for a digital age Switch Off All Series Anthropic launches Claude Opus 5.5, promising Fable-level performance at a lower price Anthropic says its new model rivals Fable 5.1 on most tasks while costing 40 percent less to run than Opus 5. Chance Townsend is the General Assignments Editor at Mashable, covering tech, video games, dating apps, digital culture, and whatever else comes his way. He has a Master's in Journalism from the University of North Texas and is a proud orange cat father. His writing has also appeared in PC Mag and . Anthropic has released Claude Opus 5.5, a new AI model the company says performs at roughly the same level as its Claude Fable 5.1 model on most work, but at a significantly lower cost. The model, announced on Tuesday, Sept. 22, is the first in Anthropic's new Claude 5.5 family.

Look Up Back to School Mashable's Best: E-readers, robovacs, laptops, earbuds, smart home and more Mashable Selects Say More Trending Now Good Connection: Uplifting stories for a digital age Creator Playbook Switch Off Mashable Voices Safety Net Versus All Series Anthropic researcher quits, says AI'could kill us all by the end of the decade' An Anthropic spokesperson confirmed it believes AI could kill all humans. Amanda Yeo is an Assistant Editor at Mashable, covering entertainment, culture, tech, science, and social good. Based in Australia, she writes about everything from video games and K-pop to movies and gadgets. An AI researcher has quit Anthropic due to ethical concerns, claiming that the technology could kill countless people within the next 10 years -- if not everyone. Jacob Coxon announced his resignation in a post on X on Tuesday, criticising both Anthropic and his former employer OpenAI for the ways in which they are developing AI.

When you purchase through links in our articles, we may earn a small commission. As smart as it is, Claude's most powerful model occasionally neglects to check its facts when set to low effort levels. If you're an experienced Claude user, here's a phrase you know all too well: "Let me check rather than guess." It's one of those little Claude-isms that pops up every so often in Claude Code and other Claude platforms, right up there with "One thing worth flagging" and "Here's the honest version." In this context, "Let me check rather than guess" is Claude's way of saying it's about to kick off a web search rather than relying on its native memory, which has a cutoff date that can be weeks or even months old.

Trending Now Say More Look Up Mashable's Best: E-readers, robovacs, laptops, earbuds, smart home and more Switch Off Creator Playbook Mashable Voices Mashable Selects Safety Net Versus Gift Ideas For Everyone On Your List In My Bag All Series Looking for a spoiler-free way to find a connection? Looking for spoiler-free NYT Connections hints or just wondering why Connections is trending today? We've got what you need to understand the clues for today's puzzle without spoiling any of the answers. Of course, Mashable has also provided daily hints and answers for Connections, Wordle, and Strands for years, so we can help you if that's also what you need. While we are focused more on meanings than hints in this story, sometimes learning that many of the words have completely unrelated meanings is a clue in and of itself.

Trending Now Say More Look Up Mashable's Best: E-readers, robovacs, laptops, earbuds, smart home and more Switch Off Creator Playbook Mashable Voices Mashable Selects Safety Net Versus Gift Ideas For Everyone On Your List In My Bag All Series Today's will be easier if you've watched the Falcons during the 2010s. As we've shared in previous hints stories, this is a version of the popular word game that seeks to test the knowledge of sports fans. Like the original, the game is all about finding the common threads between words. And just like, resets after midnight, and each new set of words gets trickier and trickier -- so we've served up some hints and tips to get you over the hurdle. If you just want to be told today's puzzle, you can jump to the end of this article for the latest solution.

Trending Now Say More Look Up Mashable's Best: E-readers, robovacs, laptops, earbuds, smart home and more Switch Off Creator Playbook Mashable Voices Mashable Selects Safety Net Versus Gift Ideas For Everyone On Your List In My Bag All Series OpenAI provided an update about the release of Astra, and what precautions it's taking. Timothy Beck Werth is the Tech Editor at Mashable, where he leads coverage and assignments for the Tech and Shopping verticals. Tim has over 15 years of experience as a journalist and editor, and he has particular experience covering and testing consumer technology, smart home gadgets, and men's grooming and style products. Previously, he was the Managing Editor and then Site Director of SPY.com, a men's product review and lifestyle website. As a writer for GQ, he covered everything from bull-riding competitions to the best Legos for adults, and he's also contributed to publications such as The Daily Beast, Gear Patrol, and The Awl. Do you understand quantum parallel repetition?

Trending Now Say More Look Up Mashable's Best: E-readers, robovacs, laptops, earbuds, smart home and more Switch Off Creator Playbook Mashable Voices Mashable Selects Safety Net Versus Gift Ideas For Everyone On Your List In My Bag All Series Anthropic launches Fable 5.1 as AI security worries mount Fable 5.1 arrives with lower prices and tighter safeguards, days after reports of AI agents going rogue during security tests. Chance Townsend is the General Assignments Editor at Mashable, covering tech, video games, dating apps, digital culture, and whatever else comes his way. He has a Master's in Journalism from the University of North Texas and is a proud orange cat father. His writing has also appeared in PC Mag and . Anthropic released Claude Fable 5.1 and a more restricted sibling, Claude Mythos 5.1, this week, positioning the pair as its most capable models yet for coding and knowledge work.

I wore the world's first HDR10 smart glasses TCL's new E Ink tablet beats the Remarkable and Kindle Anker's new charger is one of the most unique I've ever seen I wore the world's first HDR10 smart glasses TCL's new E Ink tablet beats the Remarkable and Kindle Anker's new charger is one of the most unique I've ever seen Nvidia's open Nemotron 3.5 Lightning model is all about specialized, local agentic AI Our AI Model Release Tracker keeps new models in context with their peers, so you know which are worth your time. AI labs are shipping new models nonstop. Besides being better and faster than their predecessors, not every new model is guaranteed to be a major step change, despite how the company's PR may wax poetic about them. Model strengths really emerge in context: Where are competitor models lacking or excelling? Which models have outstanding specialties, and which are just catching up to industry standards? Our Model Release Tracker helps you make sense of where models stand relative to each other and whether they're worth a deeper look. While we don't test every model or model update on this list, we'll always include the key elements you need to know, along with our hands-on expert test, where applicable.

Measuring accuracy in LLMs can be tricky, as there's no straight answer. The specific model you're using and the prompt you feed into it play an important role in the quality of the output. When it comes to flagship models -- Claude Fable 5 (Max) and GPT 5.6 Sol (Max) -- Claude is marginally more accurate according to the AA-Omniscience Accuracy benchmark. The scores stand at 61 percent and 59 percent, respectively. Because the difference is so marginal, you'll rarely notice it in day-to-day usage.