It's been only four days since Claude launched Claude 3.7 sonnet. And here we are, welcome to GPT 4.5 Open AI’s largest and best model for chat yet.
Imagine chatting with an AI that feels like your most insightful buddy — one that not only tosses out clever ideas but also really “gets” you. That’s the promise behind OpenAI’s latest release, GPT‑4.5. Fresh off the press and already stirring up conversation among tech enthusiasts, GPT‑4.5 is setting the bar higher for natural, human-like dialogue.
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What’s the Big Deal with GPT‑4.5?
GPT‑4.5, codenamed Orion, is OpenAI’s biggest, most compute-hungry model to date. It builds on the success of GPT‑4o but takes things several notches up by scaling unsupervised learning to new heights. By training on 12.8 trillion parameters — a 60% boost over GPT‑4o — and routing inputs through 128 dynamic expert networks, GPT‑4.5 is designed to recognize patterns and draw creative connections like never before. In early evaluations, it outshines its predecessor by cutting hallucinations down by nearly 25 percentage points and boosting scientific question accuracy from 53.6% to 71.4%. Even in math, it leaps from a meager 9.3% to 36.7% on the AIME ’24 benchmark!
But don’t be fooled — this isn’t a model built solely for crunching numbers. With advanced emotional alignment layers, GPT‑4.5 can adjust its tone to suit the conversation. Whether you need a comforting word after a rough day or a spark of creative inspiration for your next project, GPT‑4.5 aims to deliver responses that feel warm and surprisingly human.
Benchmarks That Speak Volumes
Let’s geek out over some numbers:
- Science & Factual Accuracy:
GPT‑4.5 scores 71.4% on GPQA — a solid leap from GPT‑4o’s 53.6%. This jump means it’s much less likely to “hallucinate” when tackling science or general knowledge queries, making its responses more reliable. - Mathematics:
On the AIME ’24 math test, GPT‑4.5 earns 36.7%, a huge boost over GPT‑4o’s 9.3%. Even so, it still lags behind specialized models like o3-mini, which hit around 87.3%. It’s clear that while GPT‑4.5 is getting better at math, its focus is more on natural conversation. - Multilingual Skills:
With an 85.1% on the MMMLU benchmark, GPT‑4.5 proves it can handle multiple languages well — ideal for global use. - Coding Performance:
In coding tasks measured by SWE‑Bench, GPT‑4.5 scores 38.0% compared to GPT‑4o’s 30.7%. While it’s an improvement, it still trails behind models like Claude 3.7 Sonnet in this area.
These stats prove that while GPT‑4.5 shines in everyday conversational tasks and factual accuracy, it’s not the top dog when it comes to heavy-duty coding or complex mathematical reasoning. It’s a jack-of-all-trades, excelling in the “human touch” department but giving a little ground to specialized reasoning models.
Overall, these benchmarks show GPT‑4.5 as a model that excels in factual accuracy and multilingual understanding, while its math and coding skills, though improved, aren’t its main selling points. It’s optimized for friendly, human-like conversation — perfect for creative tasks and everyday dialogue.
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The Price of Brilliance
All this brainpower does come at a premium. With API rates of $75 per million input tokens and $150 per million output tokens — and a ChatGPT Pro subscription at $200 a month — GPT‑4.5 is not exactly a bargain. But as many users will tell you, you often get what you pay for. For creative writing, emotional support, and smooth, natural chat experiences, the extra cost might just be worth it.
Use Cases That Hit Home
GPT‑4.5 is perfect for tasks where a friendly, thoughtful conversation matters:
- Emotional Support & Coaching: It’s like having a wise friend who listens and offers gentle advice.
- Creative Collaboration: Brainstorming for your next novel or marketing campaign? GPT‑4.5 can throw out vivid ideas and crisp analogies.
- Document Synthesis: Need to pull together info from various sources into one neat report? This model can do that too.
- Agentic Task Automation: Whether it’s coordinating multi-step workflows or summarizing data, GPT‑4.5 can ease the workload.
A Platform That Brings It All Together
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How Does GPT‑4.5 Stack Up Against the Competition Like Claude 3.7 Sonnet?
When compared to other AI powerhouses:
- Claude 3.7 Sonnet: While Claude 3.7 excels in structured reasoning and coding (with a higher SWE‑Bench score), GPT‑4.5 leads in creating engaging, emotionally intelligent conversations.
- Google’s Gemini Ultra 2.0: Gemini Ultra offers stellar multimodal capabilities, but GPT‑4.5’s massive scale gives it a broader knowledge base and a more natural conversational flow.
- Reasoning Models (o1/o3-mini): These models still outperform GPT‑4.5 on technical math and coding tasks, showing that there’s no one-size-fits-all in the AI world.
The Road Ahead
OpenAI isn’t resting on its laurels. With whispers of hybrid models that might merge the best of both worlds — the conversational charm of GPT‑4.5 with the structured reasoning of its o-series siblings — the future looks exciting. For now, GPT‑4.5 is available as a research preview to ChatGPT Pro users and select enterprise customers, with broader access rolling out soon.
Final Thoughts
GPT‑4.5 marks an important step in making AI feel more like a human collaborator — empathetic, creative, and ready to chat at a moment’s notice. Sure, it’s pricey and not the best for heavy coding or deep math, but for anyone looking for a friendly digital partner to brainstorm with or help write that killer marketing copy, it might just be the perfect fit.
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