GPT-4.5 vs o1
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
o1 by OpenAI wins on 13 of 16 benchmarks against GPT-4.5 by OpenAI, which leads on 3. This head-to-head comparison covers coding, math, reasoning, speed, and pricing metrics from our benchmark data.
Category-by-Category Breakdown
General Intelligence: In general intelligence, o1 scores 1360 on Chatbot Arena ELO compared to GPT-4.5's 1310, while o1 scores 82.0% on MMLU-Pro compared to GPT-4.5's 78.0%, while o1 scores 92.0% on IFEval compared to GPT-4.5's 86.0%, while GPT-4.5 scores 62.5% on SimpleQA compared to o1's 47.0%.
Coding: In coding, o1 scores 89.0% on HumanEval+ compared to GPT-4.5's 88.0%, while o1 scores 48.9% on SWE-bench Verified compared to GPT-4.5's 38.0%, while o1 scores 55.0% on LiveCodeBench compared to GPT-4.5's 45.0%.
Math: In math, o1 scores 94.8% on MATH compared to GPT-4.5's 82.0%, while o1 scores 97.5% on GSM8K compared to GPT-4.5's 94.0%.
Reasoning: In reasoning, o1 scores 77.3% on GPQA Diamond compared to GPT-4.5's 71.4%, while o1 scores 32.0% on ARC-AGI compared to GPT-4.5's 20.0%.
Context: In context, o1 scores 200K on Context Length compared to GPT-4.5's 128K.
Pricing Comparison
GPT-4.5 costs $75.0/1M input tokens and $150.0/1M output tokens, while o1 costs $15.0/1M input and $60.0/1M output. o1 is the more affordable option for API usage.
Speed Comparison
GPT-4.5 generates output at 60 tok/s compared to o1's 35 tok/s, and the time to first token is 600 ms for GPT-4.5 versus 1000 ms for o1. GPT-4.5 delivers faster throughput.
Verdict
For developers prioritizing speed, GPT-4.5 has the edge. For those who value coding and general intelligence and math and affordability, o1 is the stronger choice.
View Individual Model Pages
GPT-4.5 vs o1 — FAQ
Which is better, GPT-4.5 or o1?
o1 wins on more benchmarks overall (13 vs 3). However, the best choice depends on your specific needs — each model excels in different areas.
How does GPT-4.5 compare to o1 for coding?
o1 is better for coding, scoring 48.9% on SWE-bench Verified compared to 38.0%. SWE-bench tests real-world software engineering by resolving actual GitHub issues.
Is GPT-4.5 cheaper than o1?
Yes, o1 is cheaper. GPT-4.5 costs $75.0/1M input and $150.0/1M output tokens. o1 costs $15.0/1M input and $60.0/1M output tokens.
Which is faster, GPT-4.5 or o1?
GPT-4.5 is faster, generating output at 60 tok/s compared to 35 tok/s. Faster output speed means shorter wait times for API responses.
What benchmarks does the GPT-4.5 vs o1 comparison cover?
This comparison covers 16 benchmarks including Chatbot Arena ELO, MMLU-Pro, HumanEval+, IFEval, SimpleQA, MATH, GPQA Diamond, SWE-bench Verified, and more. Metrics span general intelligence, coding, math, reasoning, speed, and cost categories.