Multi-Model Role Specialization: Architecture / Implementation / Review Split Emerging as Production Standard

InfoQ·high signal

Multiple independent sources (InfoQ production playbook, vibecoding.app workflow guide, Claude Code agent teams documentation) converge on a three-model role split: a high-capability model (Opus/o3) for architecture and specification decisions, a fast mid-tier model (Sonnet/GPT-5.4) for implementation, and a cross-model adversarial reviewer for quality gates. The pattern mirrors how senior engineers split thinking versus typing versus review in human teams. Evidence: InfoQ production playbook, Claude Code swarm gist with 7-agent specialization, and paddo.dev hybrid workflow documentation all independently document this structure.