What Is Claude Sonnet 4.6 — And How Is It Changing Marketing Operations?

In February 2026, Anthropic released Claude Sonnet 4.6 — and what happened with this release is more significant than another incremental model update. It delivers near-flagship intelligence at mid-tier cost, with dramatically improved computer use, a 1 million token context window, and agentic capabilities that let it pursue multi-step goals autonomously. For marketing teams and agencies, this changes the economics and the execution model for content production, competitive research, and campaign workflows in ways that are worth understanding now rather than later.