Model Comparison
GPT-4.1 nano
vs. GPT-5 (ChatGPT)
Comparing 2 AI models · 12 benchmarks · OpenAI
Recommended Pick
Op GPT-5 (ChatGPT) 14 metric wins Strongest on: Throughput, Reasoning, Intelligence
Best Value
GPT-4.1 nano
100.0 value score
32.1 reasoning / $0.18/1M
Lowest Price
GPT-4.1 nano
$0.10/1M input price
Best Reasoning
GPT-5 (ChatGPT)
38.6 reasoning score
Blends available reasoning benchmarks
Best for Coding
GPT-5 (ChatGPT)
21.2 coding index
Composite Indices
Higher is better; speed and price are normalized
Standard Benchmarks
Only benchmarks with data are shown
Differences That Matter
Best value
GPT-4.1 nano has the strongest quality-to-price mix at 100.0 out of 100 value points.
Price gap
GPT-4.1 nano is 12.5x cheaper on input tokens than GPT-5 (ChatGPT).
Speed gap
GPT-5 (ChatGPT) generates about 1.3x as many tokens per second as GPT-4.1 nano.
Reasoning gap
GPT-5 (ChatGPT) leads GPT-4.1 nano by 6.5 points on reasoning.
Coding gap
GPT-5 (ChatGPT) leads GPT-4.1 nano by 10.0 points on coding.
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
GPT-4.1 nano
OpenAI
TTFT
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Time
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tok/s
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Tokens
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Cost
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GPT-5 (ChatGPT)
OpenAI
TTFT
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Time
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tok/s
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Tokens
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Cost
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Which answer was more useful?
Full Comparison
| Metric | Op GPT-4.1 nano | Top Pick Op GPT-5 (ChatGPT) |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $0.10/1M | $1.25/1M |
| Output Cost | $0.40/1M | $10.00/1M |
| Blended (3:1) | $0.18/1M | $3.44/1M |
| Specifications | ||
| Organization | OpenAI | OpenAI |
| Release Date | Apr 14, 2025 | Aug 7, 2025 |
| Performance & Speed | ||
| Throughput | 135.7 tok/s | 182.0 tok/s |
| TTFT | 439ms | 510ms |
| Latency | 439ms | 510ms |
| Composite Indices | ||
| Value Score | 100.0 | 6.1 |
| Reasoning Score | 32.1 | 38.6 |
| Intelligence | 13.0 | 21.8 |
| Coding | 11.2 | 21.2 |
| Math | 24.0 | 48.3 |
| Standard Benchmarks | ||
| GPQA | 51.2% | 68.6% |
| MMLU Pro | 65.7% | 82.0% |
| HLE | 3.9% | 5.8% |
| LiveCodeBench | 32.6% | 54.3% |
| MATH 500 | 84.8% | — |
| AIME 2025 | 24.0% | 48.3% |
| AIME (Original) | 23.7% | — |
| SciCode | 25.9% | 37.8% |
| LCR | 17.0% | 63.7% |
| IFBench | 32.0% | 45.0% |
| TAU-bench v2 | 17.3% | 0.0% |
| TerminalBench Hard | 3.8% | 12.9% |
Key Takeaways
GPT-4.1 nano offers the best value at $0.10/1M, making it ideal for high-volume applications and cost-conscious projects.
GPT-5 (ChatGPT) has the strongest reasoning profile with a 38.6 reasoning score, combining the available reasoning-heavy benchmarks.
GPT-5 (ChatGPT) reaches a 21.2 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-4.1 nano
- Cost-sensitive applications
- High-volume processing
GPT-5 (ChatGPT)
- Complex reasoning tasks
- Research & analysis
- Code generation
- Software development
