Model Comparison
GPT-4o (ChatGPT)
vs. GPT-5 (high)
Comparing 2 AI models · 12 benchmarks · OpenAI
Recommended Pick
Op GPT-5 (high) 10 metric wins Strongest on: Throughput, Reasoning, Intelligence
Lowest Price
GPT-4o (ChatGPT)
$0.00/1M input price
Best Reasoning
GPT-5 (high)
76.0 reasoning score
Blends available reasoning benchmarks
Composite Indices
Higher is better; speed and price are normalized
Standard Benchmarks
Only benchmarks with data are shown
Differences That Matter
Price gap
GPT-4o (ChatGPT) is ∞x cheaper on input tokens than GPT-5 (high).
Reasoning gap
GPT-5 (high) leads GPT-4o (ChatGPT) by 45.3 points on reasoning.
Top-pick rationale
GPT-5 (high) wins 10 measurable categories, including Throughput, Reasoning, Intelligence, GPQA.
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
GPT-4o (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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GPT-5 (high)
OpenAI
TTFT
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Time
—
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-4o (ChatGPT) | Top Pick Op GPT-5 (high) |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $0.00/1M | $1.25/1M |
| Output Cost | $0.00/1M | $10.00/1M |
| Blended (3:1) | — | $3.44/1M |
| Specifications | ||
| Organization | OpenAI | OpenAI |
| Release Date | Feb 15, 2025 | Aug 7, 2025 |
| Performance & Speed | ||
| Throughput | — | 99.4 tok/s |
| TTFT | — | 93333ms |
| Latency | — | 93333ms |
| Composite Indices | ||
| Value Score | — | 100.0 |
| Reasoning Score | 30.6 | 76.0 |
| Intelligence | 8.2 | 36.1 |
| Math | — | 94.3 |
| Standard Benchmarks | ||
| GPQA | 51.1% | 85.4% |
| MMLU Pro | 77.3% | 87.1% |
| HLE | 3.7% | 26.5% |
| LiveCodeBench | — | 84.6% |
| MATH 500 | 79.7% | 99.4% |
| AIME 2025 | — | 94.3% |
| AIME (Original) | 10.3% | 95.7% |
| SciCode | 33.4% | 42.9% |
| LCR | 53.0% | 75.6% |
| IFBench | — | 73.1% |
| TAU-bench v2 | — | 84.8% |
| TerminalBench Hard | — | 32.6% |
Key Takeaways
GPT-4o (ChatGPT) offers the best value at $0.00/1M, making it ideal for high-volume applications and cost-conscious projects.
GPT-5 (high) has the strongest reasoning profile with a 76.0 reasoning score, combining the available reasoning-heavy benchmarks.
All models support context windows of ∞+ tokens, suitable for processing lengthy documents and maintaining extended conversations.
When to Choose Each Model
GPT-4o (ChatGPT)
- Cost-sensitive applications
- High-volume processing
GPT-5 (high)
- Complex reasoning tasks
- Research & analysis
