Adam Feldman (@feldman) header
Adam Feldman (@feldman) profile picture

Product @Anthropic

New York City
Joined June 2009
Photo by Adam Feldman (@feldman)Photo by Adam Feldman (@feldman)
Adam Feldman retweeted
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The Waymo iOS app and in car software experience don’t get enough praise
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new model - rejoice!
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Introducing Claude Haiku 5.5: the cheapest, fastest, and most capable small model we’ve ever released. On average, it costs around 75% less to run than Claude Haiku 4.5.
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new model - please enjoy
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Introducing Claude Sonnet 5.5, the second model in the Claude 5.5 family. It’s a clear upgrade over Sonnet 5, runs more than 30% faster, and costs up to 30% less for most work.
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What the actual fuck. Opus 5.5 ultra created this masterpiece. 4 agents and an hour and a half later. Everything from scratch, no AI voice API used... this is it...
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Adam Feldman retweeted
Claude Opus 5.5 drew every frame of this animation in JavaScript. Everyone in town sends Claude their requests, but one girl sends a question instead: "What do you love?"
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also important news we fixed the writing
Introducing Claude Opus 5.5, the first model in our new Claude 5.5 family. It performs at the level of Claude Fable 5.1 for most tasks, and costs 40% less to run than Opus 5.
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We combined the things. Please enjoy.
Claude Cowork and chat are merging into one Claude. Ask a quick question or hand over a report, and Claude takes it from there, even after you close your laptop. If something's unclear, Claude asks—you keep the final say. Rolling out to Pro and Max over the next few weeks.
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launched another model - please enjoy
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Adam Feldman retweeted
really feel this sometimes
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Adam Feldman retweeted
Rep. Dan Goldman (D-NY), in concession speech: “Jews have given back so much to this country. As history has taught us, antisemitic tropes and stereotypes, some of which I heard personally on this campaign, will ultimately be the undoing of our democracy if we all don’t lean in and speak out — even if it’s not politically expedient.”
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Adam Feldman retweeted
This is a new paradigm for interacting with Claude that is significantly more "inline" with all the other human activity org-wide. Once you do all of the under the hood engineering work to make this "just work" (e.g. across tools, integrations, compute environments, memory, security, etc.), Claude basically joins the team in a seamless way - you can talk to it as you would talk to a person and it can help with a very large variety of workloads. Imo this is the 3rd major redesign of LLM UIUX. The first paradigm was that the LLM is a website you go to, the second was that it is an app you download to your computer. This third one is that it is a self-contained, persistent, asynchronous entity with org-wide tools and context, working alongside teams of humans. It really takes a while to wrap your head around it, but it works and it is awesome.
Introducing Claude Tag, a new way for teams to work with Claude. In Slack, Claude joins as a team member with access to the channels and tools you choose. Tag Claude in and delegate tasks to it while you focus on other work.
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Adam Feldman retweeted
Our Labs team worked on this along with the Claude Code team — as Claude's work gets deeper and more independent, I've found really valuable to have it explain its thinking and outputs using Artifacts; try asking it to diagram its work next time you're working with it.
New in Claude Code: Artifacts. Interactive pages built from your session, like a PR walkthrough or a living project dashboard, shared with your team at a private link. Available in beta on Team and Enterprise plans.
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Adam Feldman retweeted
Our most capable model is now available everywhere, including our mobile apps. Let us know your thoughts!
Introducing Claude Fable 5: a Mythos-class model that we’ve made safe for general use. Its capabilities exceed those of any model we’ve ever made generally available.
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Adam Feldman retweeted
My favorite chart from our system card - FrontierCode is an excellent eval, and it accurately reflects the step up I feel when using Fable!
Introducing Claude Fable 5: a Mythos-class model that we’ve made safe for general use. Its capabilities exceed those of any model we’ve ever made generally available.
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