Anthropic adds Opus advisor to Claude API
Anthropic launched an advisor tool for the Claude Platform, enabling developers to pair Opus as a planner with Sonnet or Haiku as executors. The single-API pattern provides near Opus-level intelligence for complex tasks while cutting costs by nearly 12 percent.
Formalizing the "smart planner, fast executor" architecture into a native API feature drastically simplifies agent orchestration. It's a pragmatic approach to scaling high-quality reasoning without the premium price tag. Sonnet paired with Opus scored 2.7 points higher on SWE-bench Multilingual than Sonnet alone. The strategy reduces per-task costs by 11.9% by reserving Opus only for hard mid-run decisions. Consolidating the multi-model consultation loop into a single Messages API request reduces developer friction.
DISCOVERED
58d ago
2026-04-16
PUBLISHED
64d ago
2026-04-09
RELEVANCE
AUTHOR
claudeai