
Claude Haiku 4.5 Costs $10.21 to Breach, 10x Harder Than Rivals in ACE Benchmark
Fabraix's ACE benchmark measures the dollar cost to break AI agents. Claude Haiku 4.5 required a mean adversarial cost of $10.21, making it 10x more resistant than the next best model, GPT-5.4 Nano ($1.15).



























