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GPT-5: The Best Ever Model, or Main 2025 Failure?

GPT-5 promised next-gen reasoning, memory, and multimodal power — but does it live up to the hype? Explore its biggest wins and most significant flaws in our deep dive.
GPT-5 launch analysis questioning its success or failure in 2025 with AI icon and binary code background

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CTO, Head of Technical Skills Discipline

The release of GPT-5 in mid-2025 marked one of the most anticipated moments in the AI world. After months of speculation and sky-high expectations, OpenAI finally unveiled its new flagship model — promising major leaps in reasoning, memory, creativity, and multimodal performance. Some called it a revolution. Others, a disappointment wrapped in better packaging.

So which is it? A breakthrough in human-machine interaction — or just another overhyped release?

To start, there’s no denying GPT-5 is a major technical leap forward. Its ability to follow complex instructions, hold multi-turn conversations without losing context, and adapt its tone or style with almost eerie precision is unmatched. Whether you want it to write a marketing campaign, analyze code, generate ideas, critique design, or simulate a historical figure — it does so with unprecedented fluency. And with access to multimodal inputs — including images, audio, and even video — GPT-5 feels less like a chatbot and more like a universal interface for interacting with digital information.

What Makes GPT-5 Stand Out

Here are some of the key upgrades that set GPT-5 apart:

Key GPT-5 features including expanded context window, persistent memory, multimodal input/output, and improved reasoning
Key advancements in GPT-5: expanded context, persistent memory, multimodal capabilities, stylistic flexibility, and improved reasoning over GPT-4.
  • Expanded context window: capable of processing hundreds of pages of content at once.
  • Persistent memory: in some tiers, it remembers users’ preferences, tone, and prior conversations.
  • Multimodal input/output: seamless handling of text, image, audio, and even video in a single prompt.
  • Stylistic adaptability: writes in any tone, from academic to casual, from Shakespearean to Gen Z slang.
  • Improved reasoning: better at logic, step-by-step explanations, and decision trees than GPT-4.

But despite all this, not everyone is convinced. Under the surface, GPT-5 still struggles with one of the oldest and most dangerous problems in large language models: hallucination. It still occasionally fabricates facts, cites nonexistent sources, and confidently presents misinformation. In high-stakes fields like medicine, law, and science, that’s a nonstarter — no matter how sophisticated the interface looks.

Powerful, But Not for Everyone

Another sore spot is access. While OpenAI touts GPT-5’s capabilities, most of its most powerful features — like long context, memory, and full multimodal abilities — were locked behind expensive enterprise tiers. Individual users and small businesses get a scaled-down experience, prompting some to ask: Is cutting-edge AI becoming a product only the wealthy can truly leverage?

And then there are the bigger questions — regulators, ethicists, and everyday users are starting to ask more loudly. With a model this powerful, who’s responsible when it’s misused? Deepfakes, copyright violations, and AI-generated propaganda are no longer hypotheticals. They’re here. And with GPT-5’s capabilities, the line between what’s real and what’s generated is blurrier than ever.

GPT-5: Main Issues to Know

Among the most common criticisms of GPT-5 are:

GPT-5 drawbacks including hallucinations, limited access, legal uncertainty, lack of true understanding, and closed ecosystem
Core criticisms of GPT-5: hallucinations, limited access to full features, ethical concerns, lack of true understanding, and a closed AI ecosystem.
  • Persistent hallucinations: It still invents data, especially in niche or factual domains.
  • Limited access to full features: many innovations were gated behind expensive plans.
  • Ethical and legal uncertainty: the use of this technology in misinformation, content theft, and privacy violations is rising.
  • No proper understanding: despite the hype, GPT-5 still lacks actual cognition or self-awareness.
  • Closed ecosystem: limited transparency and community oversight compared to open-source alternatives.

For many, perhaps the biggest letdown is that GPT-5 isn’t AGI — not even close. It doesn’t “understand” in any meaningful sense. It predicts, mimics, and imitates with stunning precision, but there’s still no self-awareness, proper reasoning, or goal-oriented thinking. It’s smarter than GPT-4, yes. But it’s still very much a tool — not a mind.

So where does that leave us?

GPT-5 is both impressive and imperfect. It’s a huge step forward, but not the final step many hoped for. It unlocks unprecedented efficiency and creative potential for developers, creators, and some industries. For skeptics, it’s a reminder that scale doesn’t automatically equal intelligence — or trustworthiness. And for the average user, it may be both exciting and unsettling to watch AI inch closer to human capabilities while remaining firmly under corporate control.

Ultimately, whether GPT-5 is the best model ever or a major failure depends entirely on what you expected it to be. If you saw it as a powerful assistant, it delivers. If you expected a digital mind, it falls short. But one thing is sure: it has changed the conversation again — and the race toward AGI is far from over.

CTO, Head of Technical Skills Discipline

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