What’s the difference between ChatGPT 3.5 and 4?

ROI answers

ChatGPT models are large language models – sophisticated AI systems that predict the next word in a sequence, allowing them to generate human-like text. ChatGPT 4 represents a significant leap forward in this capability, offering enhanced reasoning, creativity, and contextual understanding compared to its predecessor, 3.5.

  • Multimodal Input: ChatGPT 4 now features the ability to analyse images *and* text, opening up possibilities for visual content marketing and data interpretation.
  • Increased Context Window: It can process significantly longer prompts – up to 128,000 tokens – meaning more detailed instructions and larger documents can be used, crucial for complex marketing briefs.
  • Improved Accuracy & Reduced Hallucinations: ChatGPT 4 demonstrates a substantial reduction in generating factually incorrect or misleading information, vital for maintaining brand trust.
  • Advanced Reasoning: The model exhibits stronger logical reasoning skills, enabling it to tackle more nuanced marketing challenges like competitor analysis and campaign strategy.

As of early 2026, current systems include integrations with Australian-specific data sources, allowing for more relevant and culturally appropriate content generation. Compliance with Australian Consumer Law regarding advertising standards is also improving, though careful review remains essential. In 2026, we’re seeing platforms leverage these models for personalised email marketing, dynamic ad copy optimisation, and even automated social media content calendars. However, optimising these systems for peak performance and ensuring data privacy under Australian regulations requires specialist knowledge.

Rather than navigating such complex technicalities yourself, you can simply reach out to our team. At ROI growth agency, we specialise in integrating and optimising AI tools like ChatGPT 4 for Australian businesses. Visit https://lp.roi.com.au/contact-us/ to get started. We can take care of all this for you.


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