Fetching from the wire…
01
02
03
04
05
06
07
08
Public story · 2026-03-19 · source-backed
Anthropic's engineering blog documents the production architecture behind Claude Research: Opus 4.6 decomposes queries, spawns parallel Sonnet 4.6 subagents per sub-question, then synthesizes. This beat single-agent Opus 4.6 by 90.2% on internal evals. Token cost scaling: single-agent chat 1x, single agentic 4x, multi-agent 15x. Quality gains justify the cost for complex research, and the architecture pattern is directly replicable by anyone with API access. Anthropic Engineering
Each link below shares sources, entities, or timing with this story.
Opus built by Anthropic / Shared entities / Shared topic / What happened next / Tension
Linked by a graph relationship (Opus built by Anthropic); both cover Anthropic, Opus, Sonnet; overlapping topics (anthropic, architecture, cost, opus, sonnet).
Opus built by Anthropic / Shared entities / Same source domain / Shared topic / What happened next / Tension
Linked by a graph relationship (Opus built by Anthropic); both cover Anthropic, Opus, Sonnet; reported by the same outlet (anthropic.com).
Claude Code uses Sonnet / Shared entities / Shared topic / What happened next
Linked by a graph relationship (Claude Code uses Sonnet); both cover Anthropic, Opus, Sonnet; overlapping topics (beat, cost, opus, sonnet).
Opus built by Anthropic / Shared entities / Same source domain / Shared topic / What happened next / Tension
Linked by a graph relationship (Opus built by Anthropic); both cover Anthropic, Opus; reported by the same outlet (anthropic.com).
Anthropic released Sonnet / Shared entities / Same source / Shared topic / Tension
Linked by a graph relationship (Anthropic released Sonnet); both cover Anthropic Engineering, Opus Orchestrator, Sonnet, Token; cite the same source (Anthropic Engineering).
Claude Code uses Sonnet / Shared entities / Shared topic / Earlier coverage / Tension
Linked by a graph relationship (Claude Code uses Sonnet); both cover Opus, Sonnet; overlapping topics (anthropic, cost, opus, sonnet).
Opus built by Anthropic / Shared entities / Shared topic / What happened next
Linked by a graph relationship (Opus built by Anthropic); both cover Anthropic, Opus, Sonnet; overlapping topics (anthropic, architecture, opus).
Linked by a graph relationship (Opus built by Anthropic); both cover Anthropic, Opus, Sonnet; overlapping topics (anthropic, cost).