hybrid-opus-haiku-routing-for-multi-stage-pipelines

For long multi-stage pipelines like AutoResearchClaw (23 stages), use Opus 4.6 for the 8 stages requiring deep reasoning (hypothesis generation, paper writing, peer review, evaluation) and Haiku 4.5 for the 15 routine stages (topic init, resource planning, export, status checks). AutoResearchClaw supports primary + fallback models natively. This pattern balances quality and token efficiency while staying within the Anthropic ecosystem — avoids GPT-4o-mini dependency.