In 2026, "accuracy" is just marketing noise. Hallucination rates shift wildly...

https://charliekzxa221.huicopper.com/the-reasoning-tax-why-pushing-llms-to-think-harder-can-cost-you-reliability

In 2026, "accuracy" is just marketing noise. Hallucination rates shift wildly depending on your chosen benchmark. For example, the HalluHard suite captures a 30.2% failure rate in complex reasoning that simpler tests miss entirely