Zac Zuo

Claude 4 - Anthropic's next leap in coding, reasoning & AI agents

Anthropic's Claude 4 models, Opus 4 & Sonnet 4, set new AI benchmarks in coding, reasoning & agents. Both feature extended thinking with tool use & improved memory.

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Zac Zuo
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Hi everyone!

Claude 4 is here!! Anthropic's next generation of models, including the powerful Claude Opus 4 and an upgraded Claude Sonnet 4, has arrived. They're aiming high with this release, especially for coding, advanced reasoning, and building more capable AI agents.

A key new feature for both is "extended thinking with tool use." This allows them to use tools like web search while working on complex problems, which is a big step for more capable agent-like tasks. They've also got improved memory and follow instructions more precisely.

Alongside the new models, Claude Code is now generally available. It brings Claude's help right into your dev workflow with VS Code, JetBrains, and GitHub integrations. You can try Sonnet 4 for free, with Opus 4 on paid plans and various APIs.

Parth Ahir

@zaczuo Really exciting to see AI models evolving with extended tool use—this feels like a meaningful step toward smarter, more context-aware agents. Can’t wait to test how these upgrades improve real-world coding and problem-solving workflows!

Tanjum 🔥 🚀🚀
I'm really excited to start using Claude 4. I've heard it's incredibly powerful for coding and solving complex problems. I'm hoping it will help me speed up my workflow and live up to the hype!
Divyansh Tiwari

Been waiting to see what Anthropic would come up with next — and Claude 4 looks super impressive! Love how it’s focused on better reasoning and handling longer conversations. Can’t wait to test it out properly. Congrats to the team on this solid launch!

Guillermo Perez
Can take a full repo and improve the code or delete duplicated code or not used? What are the limitations?
Germán Merlo

Impressed by all the available use cases. It's really awesome. AI focusing on productivity is key

Simona O'Neill
Love this ! Been using Claude a lot so I’m super excited to test the new version 🤩
Evgenii Zaitsev

Claude 4 sounds like a major leap forward! I’m also excited to see Claude Code integrated into developer workflows with VS Code, JetBrains, and GitHub - that’s going to be a real productivity booster for teams. How does Claude handle context-switching between tasks or different tools in a session?

Mike Staub

Get it to 1m context window and win the whole market.

Alex Cloudstar

Congratulations on the launch of Claude 4! 🎉 The "extended thinking with tool use" feature sounds like a game-changer for tackling complex tasks. It's exciting to see innovations that enhance precision and flexibility. Can't wait to integrate this into my workflow! 👏🚀

Farzana Rumky

Claude 4 is super sharp and responsive — big step forward. Great work, Anthropic! 👏

Atmos

I've been a die hard fan from the first beta until 3.5 - but now if you aren't a coder and just a normal end-user, Claude has fallen behind. The context window of 200k is not enough for my own book and a few other background documents to do great writing. It's a shame, but I have to use GPT 4.1 simply because of their 1000k context window. Claude is focusing solely on coders as main audience, which is not only a letdown but missing the other 98% of people. This decision is a huge fail.

Anik Dhar

Very useful in coming future.

Ogechukwu Udoh

Claude 4 is here!! Anthropic's next generation of models, including the powerful Claude Opus 4 and an upgraded Claude Sonnet 4, has arrived. They're aiming high with this release, especially for coding, advanced reasoning, and building more capable AI agents.

A key new feature for both is "extended thinking with tool use." This allows them to use tools like web search while working on complex problems, which is a big step for more capable agent-like tasks. They've also got improved memory and follow instructions more precisely.

Alongside the new models, Claude Code is now generally available. It brings Claude's help right into your dev workflow with VS Code, JetBrains, and GitHub integrations. You can try Sonnet 4 for free, with Opus 4 on paid plans and various APIs.

Jeffrey van Tilburg

Excited! Have been looking forward to it.

Savina Xu
Just tried it in cursor, much better than 3.7!
Marco Luthi
Launching soon!

Just tried it out with Claude Code and Sonnet 4 for Swift Development – This is just insane. Clean code and proper context awareness.

Catherine Cormier

Hi there! Quick question here : How does Claude 4’s improved tool use and integrations (e.g., MCP) support web and mobile development workflows, particularly for connecting to project management tools like Jira or Trello? Any real-world examples of agencies using it for this?

Soohyun Jung

I'm so looking forward to Claude 4. Claude is just amazing.