Boris Cherny is an engineer at Anthropic who regularly posts on X about using Claude products. His recent coverage focuses on Claude Code updates, including general availability of Code Review, Mods for customization, Projects and a proactive Slack bot, plus the Haiku 5.5, Sonnet 5.5 and Opus 5.5 models. He also described Opus 5.5 and Fable 5.1 each porting HAProxy from C to Rust, with Opus finishing faster and at lower cost.
We're removing the 5-hour limit for verified Ultra accounts. [Quoting @claudeai]: We’re renaming our Max plans: Max 5x → Max Max 20x → Ultra Max is still $100/month, and Ultra is still $200. If you’re a subscriber, there’s nothing you need to do. We’re also r…
Utah gave Claude Code to 34 developers across 10 state agencies. 80% had a working environment within 30 minutes, 71% reported saving 20+ hours by the end of the four-week pilot. [Quoting @AnthropicAI]: We're expanding our partnership with @USGSA. Under a new…
Don't sleep on Claude Slides. This is how I make slide decks now -- no more googling "iphone frame svg" like the old days Try it:
I could not imagine being productive without Claude Code Review. It runs on all of my PRs, and catches almost every bug before it goes it. This is a piece of the secret sauce that lets the team and I move so quickly while raising the quality bar [Quoting @Cla…
Over the last few years, we have made significant progress on prompt injection for Claude models. As agents do more, it is increasingly urgent that we solve it across the industry. Really excited to partner with Gray Swan to host this competition. Can’t wait…
Haiku 5.5 is a good Haiku. With 100k token context, it's also 10x cheaper than Haiku 4.5 [Quoting @claudeai]: 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 th…
Mods are absolutely insane. You can now customize Claude to work and look the way you want by just prompting it. Each person works differently, so there's no reason why everyone should have an identical Claude experience. Make Claude your own, and share mods…
Sonnet 5.5 fixing a bug with Claude Code. 30% faster and 30% less usage. [Quoting @claudeai]: 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…
Can’t wait to see what you build. [Quoting @ClaudeDevs]: It’s now easier to build plugins for Claude. We built a new portal to submit your plugin, track review, and see usage. Plugins package MCP and skills, and are becoming the way to build for Claude. MCP u…
Tag writes >50% of my PRs every day. It also does ~100% of my data analysis, and fixes most of our product feedback + bugs. It's not like a regular Slack bot. It is proactive, programmable, it has memory, it has access to your connectors. With Opus 5.5 and Fa…
If you've noticed how fast and the Desktop app have become in the last few weeks, here's how we did it. Lots of juicy learnings & techniques in the blog post for engineers working on speeding up your own apps. [Quoting @ClaudeDevs]: We made claude.ai 3x…
Opus 5.5 is a really good model. It's been my daily driver the last few weeks. We had Opus 5.5 and Fable 5.1 each port HAProxy from C to Rust. Both passed nearly all of HAProxy's tests, but Opus 5.5 finished in 9.5 hours compared to Fable 5.1's 12 hours, and…
Projects have changed not only how I interact with Claude but how I code. I stopped managing sessions. I just send thoughts as they come, Claude splits them into threads, and the project remembers how I work. It's where I do a ton of my coding now. [screensho…
Projects are how I write a lot of my code these days. Really excited for everyone to try the new experience! Rolling out now [Quoting @claudeai]: Projects now run from one conversation, starting in Claude Code. You describe what needs doing, and Claude direct…
Also today: Claude Docs, Claude Slides, and Claude Design are in every conversation. Ask Claude for a presentation and you get one you can open, edit, and export as PowerPoint or PDF. Same for a document or a design. There's no separate tool to navigate to. T…
Claude Code showed that AI could do real work, not just answer questions. Developers hand Claude a feature, come back to shipped code. That's where much of the industry's serious engineering runs now. Cowork proved knowledge workers could do the same: hand Cl…
Claude Mods are landing now. Someone already built a Tetris-in-Claude mod 🤯 See issue for the latest community update, technical details, and more cool demos
Fable solved the Cyphral Distich (a 370 year old cypher). Super cool way to use Claude
The latest Threat Intelligence report is an absolutely terrifying and important read. As models become more intelligent, without the right safeguards and monitoring they also become more dangerous. Many capabilities are dual use: a model that codes well can b…
wait what [Quoting @ehsanik]: Using Claude in Chrome product. Prompt: replicate this image (my profile picture) in jspaint, use brushes to replicate it as closely as possible. I want you to use brushes and clicking. Do not use javascript tool, but the final r…
The A.I. Daily