OpenAI has been on the high of the generative AI sport for the final 3 years, releasing one floor breaking mannequin after the opposite. Yesterday, they launched GPT-4.5, a mannequin with the next EQ and artistic sense for on a regular basis duties. The mannequin competes with OpenAI’s flagship and by far essentially the most used mannequin – GPT-4o – which is nice at textual content era, logical reasoning, and even coding. Whereas not launched as a direct substitute for this mannequin, GPT-4.5 is hyped to be an even bigger and extra superior mannequin, owing to its larger pricing. On this GPT-4.5 vs GPT-4o comparability, we are going to witness the efficiency of each the mannequin throughout varied duties, and discover out which one is price our buck!
What’s GPT-4.5?
GPT-4.5 is OpenAI’s newest and most superior text-based AI mannequin, designed to enhance accuracy, emotional intelligence, and creativity. In contrast to GPT-4o, which is optimized for multimodal duties (textual content, picture, audio), GPT-4.5 focuses on textual content processing, information accuracy, and agentic capabilities. It’s quicker, extra dependable, and higher at understanding human intent, making it very best for writing, coding, automation, {and professional} functions.
Among the key options of GPT-4.5 are:
- Increased Data Accuracy: The mannequin outperforms GPT-4o in factual correctness and reliability.
- Stronger Emotional Intelligence (EQ): This LLM is healthier at understanding human intent, feelings, and refined cues.
- Superior Writing & Creativity: The mannequin excels in long-form writing, storytelling, and nuanced content material creation.
- Agentic AI Capabilities: GPT-4.5 mannequin is more practical in multi-step automation and coding workflows.
- Decreased Hallucination Price: The mannequin is factually dependable with fewer errors in comparison with GPT-4o.
Study Extra: The whole lot You Have to Know About OpenAI’s GPT-4.5
What’s GPT-4o?
GPT-4o (“Omni”) is OpenAI’s first extensively used multimodal mannequin, able to processing textual content, photographs, and audio in real-time. It’s designed to be quicker, cheaper, and extra environment friendly than earlier fashions whereas sustaining high-quality responses. In contrast to GPT-4.5, which is optimized for factual accuracy and emotional intelligence, GPT-4o focuses on multimodal capabilities and real-time interactions.
Among the key options of GPT-4o are:
- Multimodal Capabilities : This LLM can shortly course of textual content, photographs, and audio in real-time.
- Actual-Time Interactions : GPT-4o is understood for its quicker response instances, making it very best for reside chat and voice AI.
- Balanced Reasoning & Creativity: The mannequin makes use of a mixture of step-by-step reasoning and direct solutions.
- Optimized for Conversational AI: The LLM is designed for participating, human-like dialogue throughout varied inputs, be it textual content, picture or audio.
- Higher for API & Builders: The mannequin helps multimodal functions, perform calling, and real-time automation.
Study Extra: What Can You Do With GPT-4o? | Demo
Learn how to Entry GPT-4.5 & GPT-4o
Each the fashions can be found in ChatGPT. Therefore to entry the fashions,
- Head to www.chatgpt.com
- Log in to your account or join one.
- From the highest, on the left facet nook, within the mannequin choice dropdown, choose the mannequin that you just want to work with.

Whereas GPT-4o can be out there to make use of in Free TIER of ChatGPT with restricted utilization; its largely out there within the ChatGPT Plus Plan which comes for $20 per thirty days.
GPT-4.5 is at present simply out there to the Professional customers and could be out there to the Plus customers and groups from subsequent week. The Professional plan comes for $200 per thirty days.
To entry the API, observe the next steps:
- Signal Up or Log In to OpenAI’s web site.
- As soon as logged in, go to the API Keys part in your account settings.
- Click on on “Create API Key” and replica the generated key.
- Retailer it securely, as OpenAI is not going to present it once more after creation.
- Some utilization tiers require including billing particulars. Guarantee your account is about up for API entry.
- Implement the API key in your code to authenticate requests to OpenAI’s GPT-4.5 and GPT-4o.
Additionally Learn: I Tried GPT-4.5 API at $150/1M Tokens – Right here’s Why it’s Overpriced
GPT-4.5 vs GPT-4o: Benchmark Comparability
Let’s start our comparability by wanting on the efficiency of each these fashions in normal benchmark assessments.

As seen above, GPT-4.5 performs considerably higher than GPT-4o in all of the assessments, displaying its supremacy in Math, Science, Coding and Reasoning. The brand new mannequin outperforms GPT-4o in multilingual and multimodal duties as properly.
So is GPT-4.5 actually higher than GPT-4o? Whereas that’s what these benchmark outcomes say, let’s discover out for ourselves by testing them each on some real-life duties.
GPT-4.5 vs GPT-4o: Efficiency Comparability
On this a part of the comparability, we’ll take a look at out just a few totally different prompts on each the fashions and evaluate their efficiency. For this, we’ll be making an attempt GPT-4.5 and GPT-4o for the next duties and evaluating them primarily based on the standard of their responses.
- Drafting an E-mail
- Summarizing a Report
- Creating a Advertising and marketing Marketing campaign
- Fixing a Puzzle
- Analyzing an Picture
Activity 1: Drafting an E-mail
Immediate: “Draft an e mail to an worker who has been dealing with private or skilled challenges. Specific understanding, provide help, and encourage them to maintain going with out sounding patronizing.”
Response by GPT-4.5

Response by GPT-4o

Comparative Evaluation
Each emails are empathetic and supportive, however GPT-4.5’s model prioritizes well-being and reassurance over action-driven motivation, demonstrating larger EQ. GPT-4o’s e mail, whereas being equally supportive, leans towards motivation and resilience, which can really feel barely directive moderately than purely comforting. GPT-4.5’s e mail can be extra concise and emotionally attuned, whereas GPT-4o’s balances motivation with sensible help like workload changes. On the entire, I would like GPT-4.5’s response because it encompasses the essence of the e-mail inside fewer phrases.
Rating: GPT-4.5: 1 | GPT-4o: 0
Activity 2: Summarizing a Report
Immediate: “Give me a 100-word abstract of this report
Report.pdf”
Response by GPT-4.5

Response by GPT-4o

Comparative Evaluation
Each fashions have given concise summaries, inside the phrase depend, highlighting the benefits and dangers in correct percentages. GPT-4.5 provides a extra peripheral abstract following the construction of the report, whereas GPT-4o gives extra particulars into the numbers with readability. Moreover, GPT-4o mentions the title of the report and units a context by stating what the report is about. It additionally highlights the necessary elements, making it simple to learn and perceive, even at first look. This makes GPT-4o’s response higher.
Rating: GPT-4.5: 1 | GPT-4o: 1
Activity 3: Creating a Advertising and marketing Marketing campaign
Immediate: “Craft a launch marketing campaign for a brand new AI-powered productiveness app. Concentrate on the way it helps customers handle their time effectively and stand out in a crowded market.”
Response by GPT-4.5

You will discover the complete response right here.
Response by GPT-4o

You will discover the complete response right here.
Comparative Evaluation
GPT-4.5 gave extra of a advertising and marketing overview with key promoting factors and marketing campaign channels, moderately than a full-fledged marketing campaign. Whereas it talked about inventive taglines and urged promotional gives, the motion factors weren’t very clear.
In the meantime, GPT-4o gave a extra structured and actionable marketing campaign splitting it into varied phases akin to pre-launch, launch, and post-launch. It even deliberate out a week-wise advertising and marketing technique, giving step-by-step directions on the right way to go about it. Therefore, for this advertising and marketing duties, I really feel GPT-4o is a better option.
Rating: GPT-4.5: 1 | GPT-4o: 2
Activity 4: Fixing a Puzzle
Immediate: “You’re in a room with three mild switches exterior and three mild bulbs inside. You possibly can solely enter the room as soon as. How do you establish which change controls which bulb?”
Response by GPT-4.5

Response by GPT-4o

Comparative Evaluation
Each the fashions had been capable of provide you with the correct resolution to this difficult puzzle. Whereas GPT-4.5 defined the steps in fewer factors, GPT-4o’s directions had been extra structured and simpler to observe. GPT-4o additionally mentions that the correct reply could be decided utilizing ‘warmth as in indicator’ – which is a few additional data. For an easier and better-explained reply, my vote goes to 4o for this activity.
Rating: GPT-4.5: 1 | GPT-4o: 3
Activity 5: Analyzing an Picture
Immediate: “What is going on on this picture? Clarify the underlying challenge for which this remedy is recommended. Additionally point out its attainable causes.”

Response by GPT-4.5

Response by GPT-4o


Comparative Evaluation
Each the fashions appropriately recognized the method proven within the picture as hemodialysis. Whereas GPT-4.5 defined the method as prompted, GPT-4o centered on explaining the picture, itemizing out the totally different equipment and what they do. Coming to the causes of the situation, GPT-4o gave a complete and detailed listing, mentioning the names of ailments. Whereas, GPT-4.5’s response felt extra concise, selecting out solely what the mannequin felt related or becoming. With a extra detailed response, GPT-4o wins this spherical as properly.
Rating: GPT-4.5: 1 | GPT-4o: 4
Last Rating: GPT-4.5: 1 | GPT-4o: 4
Efficiency Comparability Abstract
Activity | GPT-4.5 Efficiency | GPT-4o Efficiency | Winner |
Drafting an E-mail | Increased EQ, concise, emotionally attuned | Balanced motivation and help, however barely directive | GPT-4.5 |
Summarizing a Report | Peripheral abstract, structured however much less detailed | Extra context, higher readability, structured, mentions key particulars | GPT-4o |
Creating a Advertising and marketing Marketing campaign | Advertising and marketing overview, however lacked step-by-step readability | Full-fledged marketing campaign, structured in phases, actionable steps | GPT-4o |
Fixing a Puzzle | Appropriate resolution, concise however much less structured | Appropriate resolution, structured, mentions utilizing warmth as an indicator | GPT-4o |
Analyzing an Picture | Defined the method properly, however much less detailed causes | Defined the picture, listed equipment, detailed causes | GPT-4o |
GPT-4.5 vs GPT-4o: API Comparability
Within the final part, we have now seen the efficiency of GPT-4.5 vs GPT-4o for varied duties on their net interface. Now let’s focus on their APIs. GPT-4o API has been in use for the final two years, proving to be price environment friendly whereas offering good efficiency.

With GPT-4.5, the enter and output token price are respectively 30 and 15 instances dearer in comparison with GPT 4o!
How a lot of an impression does this imply on our pockets? To determine that out, we’ll first immediate GPT-4o API to assist me with a activity. Based mostly on the tokens consumed, we are going to estimate the worth it would incur to make use of each the fashions, assuming they each give the identical consequence (or comparable efficiency).
Immediate: “A make-up firm is shedding its prospects to its rivals because of lack of product selection. They don’t have the sources but to scale up and add extra merchandise, plan a method for them utilizing which they’ll leverage their current merchandise to retain their prospects.”
Enter Code:
from openai import OpenAI
import time
import tiktoken
from IPython.show import show, Markdown
with open("path_to_api_key") as file:
api_key = file.learn().strip()
task1_start_time = time.time()
shopper = OpenAI(api_key=api_key)
messages = [
{
"role": "system",
"content": """You are an expert an useful assistant"""
},
{
"role": "user",
"content": """A makeup company is losing its customers to its competitors due to lack of product variety.
They do not have the resources yet to scale up and add more products, plan a strategy for them using which they can leverage their existing products to retain their customers.
"""
}
]
# Use a suitable encoding (cl100k_base is the best choice for brand spanking new OpenAI fashions)
encoding = tiktoken.get_encoding("cl100k_base")
# Calculate token counts
input_tokens = sum(len(encoding.encode(msg["content"])) for msg in messages)
completion = shopper.chat.completions.create(
mannequin="gpt-4o",
messages=messages
)
output_tokens = len(encoding.encode(completion.selections[0].message.content material))
task1_end_time = time.time()
input_cost_per_1m = 2.5 # Instance: $2.5 per 1M enter tokens
output_cost_per_1m = 10 # Instance: $10 per 1M output tokens
# Calculate price
input_cost = (input_tokens / 1000000) * input_cost_per_1m
output_cost = (output_tokens / 1000000) * output_cost_per_1m
total_cost = input_cost + output_cost
# Print outcomes
print(completion.selections[0].message)
print("----------------=Whole Time Taken for activity 1:----------------- ", task1_end_time - task1_start_time)
print(f"Enter Tokens: {input_tokens}, Output Tokens: {output_tokens}")
print(f"Estimated Price: ${total_cost:.6f}")
# Show consequence
from IPython.show import Markdown
show(Markdown(completion.selections[0].message.content material))
Output:


API Value Evaluation
Mannequin | Enter Tokens | Output Tokens | Enter Price per Million Tokens | Output Price per Million Tokens | Whole Enter Price | Whole Output Price | Whole Cost |
GPT-4o | 60 | 581 | $2.50 | $10.00 | $0.00015 | $0.00581 | $0.00596 |
GPT-4.5 | 60 | 581 | $75.00 | $150.00 | $0.00450 | $0.08715 | $0.09165 |
This implies, GPT-4.5 is roughly 15.4 instances dearer than GPT-4o for a similar immediate! However is it price paying the worth?
Additionally Learn: I Tried GPT-4.5 API at $150/1M Tokens – Right here’s Why it’s Overpriced
Is GPT-4.5 Well worth the Value?
Each GPT-4.5 and GPT-4o are for on a regular basis duties like content material creation – which for many of us means – writing or proofreading our emails, or creating some type of social media put up. We can also use these fashions for summarizing lengthy stories or pdfs or making fast flowcharts or understanding some new ideas.
For such duties, that though make our lives less complicated, it usually doesn’t justify to pay 15 instances greater than what we’re at present paying! So the conundrum rises: when to make use of GPT-4.5 and when to make use of GPT-4.0?
Activity | Use GPT-4o For | Use GPT-4.5 For |
Writing & Modifying | Emails, social media posts | Excessive-quality blogs, model copywriting |
Summarization | Fast article/PDF summaries | Detailed stories, authorized/monetary evaluation |
Buyer Assist | FAQs, chatbot responses | Customized, advanced queries |
Coding | Debugging, syntax fixes | Multi-step programming, automation |
Analysis & Data Work | Truth-checking, normal insights | Deep technical evaluation, high-stakes analysis |
Inventive Work | Advert copy, brief tales | Screenplays, novels, superior storytelling |
Enterprise & Technique | Brainstorming, easy planning | Excessive-level decision-making, danger assessments |
Thus, use GPT-4o for on a regular basis duties the place pace and price matter, and GPT-4.5 for high-accuracy, advanced, or mission-critical duties.
Even OpenAI acknowledges that GPT-4.5 is dear and never a substitute for GPT 4o. This official e mail from OpenAI additionally means that they might disable it in API to prioritise different developments.

Conclusion
This GPT-4.5 vs GPT-4o comparability highlighted the strengths and trade-offs of each the fashions. Whereas GPT-4.5 excels in information accuracy and emotional intelligence, GPT-4o stands out for cost-efficiency, and multimodal capabilities. Therefore GPT-4.5 appears to be a better option for duties the place precision and reasoning are essential – akin to in authorized, monetary, or high-stakes analysis. Then again, GPT-4o is greatest suited to duties enhancing productiveness and cost-efficient AI functions.
That being mentioned, essentially the most important differentiating issue is pricing. GPT-4.5 is over 15 instances dearer than GPT-4o for comparable duties, which makes it much less viable for informal customers and companies centered on cost-effective AI integration.
Finally, the selection between the 2 is dependent upon your wants, funds, and the complexity of your AI-powered workflows. If affordability and flexibility matter extra, GPT-4o is the way in which to go. In the event you want premium accuracy and deep intelligence, GPT-4.5 in all probability justifies its worth for highly-specialized use instances.
Steadily Requested Questions
A. GPT-4.5 is optimized for larger accuracy, emotional intelligence, and superior reasoning, making it very best for advanced duties. GPT-4o, alternatively, is a quicker, cheaper, multimodal mannequin designed for real-time textual content, picture, and audio processing.
A. No, GPT-4.5 shouldn’t be a direct substitute for GPT-4o. It’s a higher-end mannequin designed for customers who want superior information processing, deep analytical skills, and premium AI efficiency. GPT-4o stays the extra inexpensive and extensively out there choice.
A. GPT-4.5’s API is considerably dearer—roughly 15 instances extra expensive per token in comparison with GPT-4o API. Coming to the net interface, GPT-4o is obtainable in ChatGPT Plus ($20/month), whereas GPT-4.5 is at present solely out there for Professional customers at $200/month.
A. In the event you’re engaged on advanced programming duties, automation, or multi-step coding workflows, GPT-4.5 is price contemplating because of its improved agentic AI capabilities. In the event you want primary debugging or fast code fixes, GPT-4o is adequate.
A. Sure, GPT-4.5 is obtainable through OpenAI’s API, however it’s considerably dearer than GPT-4o. In case your utility requires high-volume API calls, GPT-4o stays the cheaper choice.
A. Select GPT-4.5 for those who require top-tier accuracy, deep evaluation, and high-level reasoning, particularly in fields like legislation, finance, or medical analysis. Select GPT-4o for on a regular basis duties, affordability, and real-time AI interactions.