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The latest gpt-5.4 news, distilled by AI into sharp ~100-word summaries. ByteBrief tracks gpt-5.4 across dozens of tech sources and brings you only what matters, updated hourly. Tap any story for the full brief, or open the original source.

Harness-1, a 20-billion parameter open-source search agent built on OpenAI's gpt-oss-20B, scores 73% in relevant information recall, surpassing GPT-5.4's 70.9% on a curated dataset. The agent was developed by researchers at UIUC, UC Berkeley, and Chroma. It redefines AI retrieval performance through open-source transparency and vector database integration.
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