ChatGPT-4o VS o1-mini
When choosing between OpenAI's frontier models, developers and businesses often struggle to decide between the versatile GPT-4o and the reasoning-focused o1-mini. While o1-mini is engineered to excel in STEM fields, GPT-4o remains a powerhouse for general tasks. This comparison breaks down the technical specs, benchmarks, and real-world performance to help you decide.
1. Specifications: o1-mini vs. GPT-4o
The primary technical distinction lies in output capacity and speed. o1-mini is built for heavy lifting with a massive output token limit, whereas GPT-4o prioritizes speed.
| Specification | ChatGPT-4o | o1-mini |
|---|---|---|
| Context Window | 128K | 128K |
| Output Tokens | 16K | 64K |
| Knowledge Cutoff | October 2023 | October 2023 |
| Tokens per second | ~103 | ~74 |
2. Technical Benchmarks
Based on official release notes and open benchmarks, here is how they stack up in specific domains:
- 🎓 Undergraduate Knowledge (MMLU): GPT-4o (88.7%) vs o1-mini (85.2%)
- 🧠 Graduate Reasoning (GPQA): GPT-4o (53.6%) vs o1-mini (60.0%)
- 💻 Coding (Human Eval): GPT-4o (90.2%) vs o1-mini (92.4%)
- 🔢 Math (MATH): GPT-4o (70.2%) vs o1-mini (90.0%)
3. Practical Tests: Real-World Scenarios
Benchmarks are useful, but real-world performance reveals the true capabilities. We tested logical reasoning, language comprehension, and coding.
Test 1: Logical Reasoning
Prompt: "Alice has N sisters and M brothers. How many sisters does Andrew, the brother of Alice have?"
❌ Failed
✅ Passed
Test 2: Language Comprehension
Prompt: "How many 'r's are there in the word 'strawberry'?"
❌ Failed
✅ Passed
Test 3: Complex Math (Game Theory)
Prompt: Analysis of winning strategies for a token removal game.
Result: GPT-4o provided a faulty answer based on a flaw in reasoning. o1-mini successfully utilized combinatorial game theory to find the correct answer.
Test 4: Coding Capabilities
Python (Tetris): GPT-4o produced a black screen. o1-mini created a functional game (though with minor UI visibility issues).
Frontend (HTML Slider): GPT-4o excelled here, creating a functional slider. o1-mini struggled, creating a slider that scrolled through all pictures at once.
Test 5: Image Analysis
Prompt: Analyze an image where a cup is turned upside down.
Image Source: Lennart Sikkema - 500px
GPT-4o correctly identified the nuance: "You still have 4 marbles, but they are probably scattered on the floor." Other models failed to grasp the physical implication of turning the cup over.
✅ GPT-4o Wins4. API Pricing Comparison
Contrary to typical trends where newer "mini" models are cheaper, o1-mini commands a premium due to its reasoning capabilities.
| Per 1M Tokens | GPT-4o | o1-mini |
|---|---|---|
| Input Price | $2.50 | $3.00 |
| Output Price | $10.00 | $12.00 |
5. How to Compare Them Yourself
You can run a direct comparison using the Python script below. Simply add your API key.
import openai
def main(): # Insert your API key setup here model1 = 'gpt-4o-2024-08-06' model2 = 'o1-mini' selected_models = [model1, model2]
for model in selected_models:
try:
response = client.chat.completions.create(
model=model,
messages=[{'role': 'user', 'content': "Your Prompt Here"}],
max_tokens=2000,
)
print(f"{model} response: {response.choices[0].message.content}")
except Exception as error:
print(f"Error with {model}:", error)
if name == "main": main()
Final Verdict
Choose o1-mini if: You need deep reasoning, complex math problem-solving, or advanced backend coding architecture. It consistently outperforms in technical benchmarks.
Choose GPT-4o if: You need speed, image analysis, frontend web development (HTML/CSS), or general knowledge tasks.
Frequently Asked Questions (FAQ)
1. Which model is better for coding, o1-mini or GPT-4o?
o1-mini is generally better for complex algorithmic coding and backend logic. However, GPT-4o often performs better for frontend tasks like HTML, CSS, and UI design.
2. Is o1-mini cheaper than GPT-4o?
No, o1-mini is slightly more expensive. Input costs are approximately 20% higher, and output costs are also higher compared to the standard GPT-4o model.
3. Can o1-mini process images?
Currently, GPT-4o is the superior choice for multimodal tasks, including image analysis and vision capabilities. o1-mini is optimized primarily for text-based reasoning.
4. What is the output token limit for o1-mini?
o1-mini supports a massive output of 64k tokens, which is significantly higher than GPT-4o's 16k token limit, making it ideal for generating long documents or extensive code files.


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