Coinbase AI Agent Outperforms Opus in Fraud Tests

Coinbase's AI agent reduced fraudulent transactions by 30% and fraud value by 22% during testing. The fine-tuned Qwen3.5-9B model outperformed leading closed-source AI models, achieving 55% lower response latency than Anthropic's Opus 4.5. Tests involved 16,140 transactions, 7,293 users, and 813 confirmed fraud cases.