Top AI developer agents pass under 25% in new benchmark
A new open test called Hyper-τ-bench measured how well AI-powered developer agents can build customer service bots on their own. The best-performing system, Anthropic’s Claude Opus 5, completed just 23.9% of tasks correctly, slightly ahead of GPT-5.6 Sol at 22%. Human engineers working with AI scored much higher, hitting 82.2%. The benchmark was designed to be challenging, with none of the six AI setups passing a quarter of the tests.
- Benchmark tests AI agents building customer service bots
- Six AI combinations evaluated, none passed 25% of tasks
- Claude Opus 5 led with 23.9% success rate
- Human plus AI pairs scored 82.2%
- Tests spanned airline, retail, telecom, banking
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