Model Comparison
GPT-4.5 (Preview)
vs. o3-mini
Comparing 2 AI models · 9 benchmarks · OpenAI
Recommended Pick
Op GPT-4.5 (Preview) 4 metric wins Strongest on: Input price, Output price, TTFT
Lowest Price
GPT-4.5 (Preview)
$0.00/1M input price
Best Reasoning
o3-mini
56.7 reasoning score
Blends available reasoning benchmarks
Best for Coding
o3-mini
17.9 coding index
Composite Indices
Higher is better; speed and price are normalized
Standard Benchmarks
Only benchmarks with data are shown
Differences That Matter
Price gap
GPT-4.5 (Preview) is ∞x cheaper on input tokens than o3-mini.
Reasoning gap
o3-mini leads GPT-4.5 (Preview) by 36.7 points on reasoning.
Top-pick rationale
GPT-4.5 (Preview) wins 4 measurable categories, including Input price, Output price, TTFT, Latency.
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
GPT-4.5 (Preview)
OpenAI
TTFT
—
Time
—
tok/s
—
Tokens
—
Cost
—
o3-mini
OpenAI
TTFT
—
Time
—
tok/s
—
Tokens
—
Cost
—
Which answer was more useful?
Full Comparison
| Metric | Top Pick Op GPT-4.5 (Preview) | Op o3-mini |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $0.00/1M | $1.10/1M |
| Output Cost | $0.00/1M | $4.40/1M |
| Blended (3:1) | — | $1.93/1M |
| Specifications | ||
| Organization | OpenAI | OpenAI |
| Release Date | Feb 27, 2025 | Jan 31, 2025 |
| Performance & Speed | ||
| Throughput | — | 202.2 tok/s |
| TTFT | — | 6661ms |
| Latency | — | 6661ms |
| Composite Indices | ||
| Value Score | — | 100.0 |
| Reasoning Score | 20.0 | 56.7 |
| Intelligence | 20.0 | 25.9 |
| Coding | — | 17.9 |
| Standard Benchmarks | ||
| GPQA | — | 74.8% |
| MMLU Pro | — | 79.1% |
| HLE | — | 8.7% |
| LiveCodeBench | — | 71.7% |
| MATH 500 | — | 97.3% |
| AIME (Original) | — | 77.0% |
| SciCode | — | 39.9% |
| TAU-bench v2 | — | 28.7% |
| TerminalBench Hard | — | 6.8% |
Key Takeaways
GPT-4.5 (Preview) offers the best value at $0.00/1M, making it ideal for high-volume applications and cost-conscious projects.
o3-mini has the strongest reasoning profile with a 56.7 reasoning score, combining the available reasoning-heavy benchmarks.
o3-mini reaches a 17.9 coding index, making it the top choice for software development and code generation tasks.
All models support context windows of ∞+ tokens, suitable for processing lengthy documents and maintaining extended conversations.
When to Choose Each Model
GPT-4.5 (Preview)
- Cost-sensitive applications
- High-volume processing
o3-mini
- Complex reasoning tasks
- Research & analysis
- Code generation
- Software development
