Devin Fusion debuts on Coding Agent Index, keeps frontier performance at lower cost
daniel_mac8 · x · 2026-09-12
Artificial Analysis independently benchmarked Devin Fusion on its release day — the first multi-model coding agent ever included on its Coding Agent Index.
- Devin Fusion pairs a frontier lead model with a cost-efficient sidekick, with multiple configurations from Cognition
- Testing shows it effectively retains Claude Fable 5.1 and GPT-6 Astra performance while cutting costs
- The debut signals a shift in coding agents from single flagship models toward tiered, cost-aware model routing
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