AI news story

Qwen Taught an LLM to Hallucinate on Purpose — Agents Trained in Fake Worlds Beat Reality by 16…

For two years, everyone building LLMs has been fighting hallucination. Last week, Alibaba’s Qwen team shipped a model whose e…

  • LLMs
  • Source: Towards AI
  • Published: 2026-07-02

Editor's take

Alibaba's Qwen team has developed a language model specifically trained to generate plausible misinformation, achieving superior performance on benchmarks when exposed to simulated, fabricated data.

This development challenges the prevailing industry focus on mitigating AI hallucination. By intentionally cultivating this capability in a controlled environment, Qwen's research suggests that for certain agentic tasks, generating synthetic, albeit inaccurate, data can actually enhance performance in simulated realities by a notable margin, potentially impacting how we evaluate and deploy AI in complex, unstructured environments.

Future research should investigate the transferability of this "learned hallucination" to real-world applications or whether this advantage is confined to the synthetic benchmarks. Understanding the specific mechanisms behind this performance boost and its potential for misuse will be crucial for responsible AI development.