Claude Opus 4.6 - Claude’s most advanced model for agentic tasks
by•
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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@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.
Happycapy
So far, this is the strongest coding model I’ve used. Love it!!!
@victoria_wu it's really good, right?
Happycapy
@byalexai Sure! it's amazing!
Happycapy
Cool! Sonnet 5 next week?
Raycast
Perhaps the most interesting aspect of 4.6 is buried here:
Super interesting:
Happycapy
Nice!!
Happycapy
opus 4.6 is insanely good! great job team ⚡️
Happycapy
great update. love it.
Huge congrats on the launch — Opus 4.6 looks like a beast for deep, long-horizon coding work.
Happycapy
so smart and very accurate at fixing bugs
It has topped the tests again! What is its most distinctive feature that sets it apart from the others?