Claude Opus 4.6 gets 1M-token beta window

Hot take: this is less about “biggest context wins” and more about Anthropic packaging long-context plus agent controls into something people can actually use on real, messy workloads.

• –The 1M-token window is real, but it is beta-only and currently limited to the Claude Developer Platform.
• –Anthropic pairs the larger window with context compaction, which matters just as much for long-running agent workflows.
• –The launch also keeps Opus positioned as the premium reasoning model for codebases, analysis, and multi-step tasks.
• –Pricing changes kick in above 200k tokens, so the practical limit for many teams will be cost, not just technical availability.