Bloomberg 2026-03-22-1
Cursor Ships Composer 2: Vertical Model Independence as Margin Strategy
Cursor's Composer 2 isn't a model launch: it's a margin play. The company built a coding-only model that matches Opus 4.6 on Terminal-Bench at 10x lower token cost, because reselling Anthropic's API while competing with Claude Code was structurally terminal. The real signal is self-summarization, an RL technique that compresses 100K-token agent trajectories to 1K tokens with 50% fewer errors than prompted compaction; if this holds, it changes the economics of every long-horizon agentic workflow, not just coding.