Model Comparison
GPT-5 (low)
vs. Grok 3 mini Reasoning (high)
Comparing 2 AI models · 12 benchmarks · OpenAI, xAI
Recommended Pick
xA Grok 3 mini Reasoning (high) 12 metric wins Strongest on: Value, Input price, Output price
Best Value
Grok 3 mini Reasoning (high)
100.0 value score
69.2 reasoning / $0.35/1M
Lowest Price
Grok 3 mini Reasoning (high)
$0.30/1M input price
Best Reasoning
GPT-5 (low)
69.4 reasoning score
Blends available reasoning benchmarks
Best for Coding
GPT-5 (low)
30.7 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
Grok 3 mini Reasoning (high) has the strongest quality-to-price mix at 100.0 out of 100 value points.
Price gap
Grok 3 mini Reasoning (high) is 4.2x cheaper on input tokens than GPT-5 (low).
Speed gap
Grok 3 mini Reasoning (high) generates about 1.1x as many tokens per second as GPT-5 (low).
Reasoning gap
GPT-5 (low) leads Grok 3 mini Reasoning (high) by 0.3 points on reasoning.
Coding gap
GPT-5 (low) leads Grok 3 mini Reasoning (high) by 5.5 points on coding.
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
GPT-5 (low)
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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Grok 3 mini Reasoning (high)
xAI
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-5 (low) | Top Pick xA Grok 3 mini Reasoning (high) |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $1.25/1M | $0.30/1M |
| Output Cost | $10.00/1M | $0.50/1M |
| Blended (3:1) | $3.44/1M | $0.35/1M |
| Specifications | ||
| Organization | OpenAI | xAI |
| Release Date | Aug 7, 2025 | Feb 19, 2025 |
| Performance & Speed | ||
| Throughput | 71.2 tok/s | 80.2 tok/s |
| TTFT | 12229ms | 622ms |
| Latency | 12229ms | 25565ms |
| Composite Indices | ||
| Value Score | 10.2 | 100.0 |
| Reasoning Score | 69.4 | 69.2 |
| Intelligence | 39.2 | 32.1 |
| Coding | 30.7 | 25.2 |
| Math | 83.0 | 84.7 |
| Standard Benchmarks | ||
| GPQA | 80.8% | 79.1% |
| MMLU Pro | 86.0% | 82.8% |
| HLE | 18.4% | 11.1% |
| LiveCodeBench | 76.3% | 69.6% |
| MATH 500 | 98.7% | 99.2% |
| AIME 2025 | 83.0% | 84.7% |
| AIME (Original) | 83.0% | 93.3% |
| SciCode | 39.1% | 40.6% |
| LCR | 58.7% | 50.3% |
| IFBench | 66.6% | 45.9% |
| TAU-bench v2 | 84.2% | 90.4% |
| TerminalBench Hard | 26.5% | 17.4% |
Key Takeaways
Grok 3 mini Reasoning (high) offers the best value at $0.30/1M, making it ideal for high-volume applications and cost-conscious projects.
GPT-5 (low) has the strongest reasoning profile with a 69.4 reasoning score, combining the available reasoning-heavy benchmarks.
GPT-5 (low) reaches a 30.7 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-5 (low)
- Complex reasoning tasks
- Research & analysis
- Code generation
- Software development
Grok 3 mini Reasoning (high)
- Cost-sensitive applications
- High-volume processing
