Aleksandar Blazhev

Claude Opus 4.6 - Claude’s most advanced model for agentic tasks

Claude Opus 4.6 is Claude’s most capable model yet, built for deep reasoning, long-running agentic tasks, and large codebases. With a 1M token context window, adaptive thinking, and improved planning, it delivers state-of-the-art performance across coding, analysis, research, and real-world work.

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Aleksandar Blazhev
Hey everyone 👋 Sharing Claude Opus 4.6, Claude’s newest and most capable model. Built for large codebases, long-running agent workflows, and deep reasoning. It handles huge context, plans before acting, and stays reliable over time. Would love your thoughts.
Robert Yancey

@byalexai Really impressive seeing models explicitly designed for long-running agent workflows. Curious how you’re thinking about verification and traceability as agents plan and act over extended horizons — especially when context spans days instead of requests.

So far, this is the strongest coding model I’ve used. Love it!!!

Aleksandar Blazhev

@victoria_wu it's really good, right?

@byalexai Sure! it's amazing!

Cool! Sonnet 5 next week?

Chris Messina

Perhaps the most interesting aspect of 4.6 is buried here:

We’ve introduced agent teams in Claude Code as a research preview. You can now spin up multiple agents that work in parallel as a team and coordinate autonomously—best for tasks that split into independent, read-heavy work like codebase reviews. You can take over any subagent directly using Shift+Up/Down or tmux.

Super interesting:

Agent teams let you coordinate multiple Claude Code instances working together. One session acts as the team lead, coordinating work, assigning tasks, and synthesizing results. Teammates work independently, each in its own context window, and communicate directly with each other.

Unlike subagents, which run within a single session and can only report back to the main agent, you can also interact with individual teammates directly without going through the lead.

Nice!!

opus 4.6 is insanely good! great job team ⚡️

great update. love it.

Zeiki Yu

Huge congrats on the launch — Opus 4.6 looks like a beast for deep, long-horizon coding work.​

so smart and very accurate at fixing bugs

Taha Tekin

It has topped the tests again! What is its most distinctive feature that sets it apart from the others?

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