
GPT-5.1: The Smarter, More Human Upgrade to ChatGPT
Explore how GPT-5.1 boosts ChatGPT with better reasoning, warmer conversations, and improved control over tone, style, and workflow efficiency.
Discover how OpenAI's new GPT-5 model is transforming AI with industry-leading benchmarks in coding, science, and healthcare accuracy.

“Having something like GPT-5 would be pretty much unimaginable at any previous time in history.” — Sam Altman, CEO, OpenAI
From real-time app generation to safer medical answers and creative brilliance, GPT-5 isn’t just an upgrade—it’s a redefinition of what AI can do.
GPT-5 is the first unified model from OpenAI—bringing together the lightning-fast responsiveness of the GPT series and the advanced reasoning skills of the o-series.
Think of it as your all-in-one AI assistant that can:
Build apps in real-time
Draft legal memos or research briefs
Navigate websites
Plan your day
And respond like a character—Robot, Listener, Nerd, or even Cynic
It’s fast. It’s smart. It’s personal.
And now, it’s free for all ChatGPT users 🚀
Let’s talk numbers. Because GPT-5 isn’t just powerful—it’s dominant.
GPT-5: 74.9% accuracy (on first try!)
Claude Opus 4.1: 74.5%
Gemini 2.5 Pro: 59.6%
GPT-5 Pro: 89.4%
Claude Opus 4.1: 80.9%
Grok 4 Heavy: 88.9%
GPT-5 (with thinking): Just 1.6% hallucination rate
GPT-4o: 12.9%
o3: 15.8%
🎓 Humanity’s Last Exam (Math, science, humanities, tools)

GPT-5 Pro: 42%
Grok 4 Heavy: 44.4%
Airline websites: GPT-5: 63.5% | o3: 64.8%
Retail sites: GPT-5: 81.1% | Claude Opus 4.1: 82.4%

GPT-5 doesn’t just perform better—it behaves better.
Less Deceptive: More honest, transparent responses
Creative Excellence: Stands out in design, storytelling, and writing
Health-Conscious: More accurate medical insights with proactive safety checks
Custom Personalities: Choose from fun personas like Cynic, Robot, Nerd, and Listener to match your vibe

With GPT-5, OpenAI isn't just pushing AI forward—it’s removing barriers to access, performance, and creativity.
This is AI that works with you—fast, safe, and capable of adapting to your needs. Whether you're coding, writing, researching, or just curious—GPT-5 is the most human-like, helpful AI yet.
Dive into the official coverage:
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Explore how GPT-5.1 boosts ChatGPT with better reasoning, warmer conversations, and improved control over tone, style, and workflow efficiency.

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No hype, just hard numbers—benchmarks, pricing, and real-world tests that show how Claude Opus 4.5 delivers top-tier performance at a much lower cost.