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GPT‑5.5: Lower Hallucinations and New Memory Features
Watch: New ChatGPT Model & Memory Features Explained (AI News You Can Use) by The AI Advantage GPT-5.5 represents a critical leap in AI reliability, addressing longstanding issues like hallucinations while introducing memory features that redefine how models handle complex tasks. OpenAI claims hallucinations have dropped by over 50% , with some benchmarks showing a 60% reduction compared to earlier versions. These improvements matter because hallucinations-outputs that sound plausible but are factually incorrect-have long hindered trust in AI systems. For developers, researchers, and businesses, GPT-5.5’s enhanced truthfulness and memory control mean fewer errors in critical workflows, from code generation to data analysis. As mentioned in the Reduced Hallucinations: What Changed section, these gains stem from architectural updates and enhanced verification mechanisms. GPT-5.5’s standout features are its reduced hallucinations and memory-source architecture . The model uses a routed system that switches between a fast model for simple tasks and a deeper reasoning model for complex queries, as outlined in the GPT-5.5 System Card. This design minimizes errors by aligning computation with task complexity. Additionally, the memory-source feature lets users fine-tune how the model retains and references context, ensuring consistency in multi-step workflows. For example, in code generation, this prevents the model from losing track of variable definitions across long conversations, a concept expanded in the Memory Updates and Sources in GPT-5.5 section.