Model Comparison
o3-pro
vs. Grok 4.5 (high)
Comparing 2 AI models · 4 benchmarks · OpenAI, SpaceXAI
Recommended Pick
SpGrok 4.5 (high)10 metric winsStrongest on: Value, Input price, Output price
Best Value
Grok 4.5 (high)
100.0 value score
62.4 reasoning / $3.00/1M
Lowest Price
Grok 4.5 (high)
$2.00/1M input price
Best Reasoning
Grok 4.5 (high)
62.4 reasoning score
Blends available reasoning benchmarks
Best for Coding
Grok 4.5 (high)
72.4 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 4.5 (high) has the strongest quality-to-price mix at 100.0 out of 100 value points.
Price gap
Grok 4.5 (high) is 10x cheaper on input tokens than o3-pro.
Speed gap
Grok 4.5 (high) generates about 4.1x as many tokens per second as o3-pro.
Reasoning gap
Grok 4.5 (high) leads o3-pro by 3.9 points on reasoning.
Top-pick rationale
Grok 4.5 (high) wins 10 measurable categories, including Value, Input price, Output price, Blended price.
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
o3-pro
OpenAI
TTFT
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Time
—
tok/s
—
Tokens
—
Cost
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Grok 4.5 (high)
SpaceXAI
TTFT
—
Time
—
tok/s
—
Tokens
—
Cost
—
Which answer was more useful?
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Full Comparison
| Metric | Op o3-pro | Top Pick Sp Grok 4.5 (high) |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $20.00/1M | $2.00/1M |
| Output Cost | $80.00/1M | $6.00/1M |
| Blended (3:1) | $35.00/1M | $3.00/1M |
| Specifications | ||
| Organization | OpenAI | SpaceXAI |
| Release Date | Jun 10, 2025 | Jul 8, 2026 |
| Performance & Speed | ||
| Throughput | 32.1 tok/s | 132.9 tok/s |
| TTFT | 64427ms | 13286ms |
| Latency | 64427ms | 13286ms |
| Composite Indices | ||
| Value Score | 8.0 | 100.0 |
| Reasoning Score | 58.5 | 62.4 |
| Intelligence | 32.5 | 53.8 |
| Coding | — | 72.4 |
| Standard Benchmarks | ||
| GPQA | 84.5% | 93.1% |
| HLE | — | 40.3% |
| SciCode | — | 54.1% |
| LCR | — | 67.7% |
Key Takeaways
Grok 4.5 (high) offers the best value at $2.00/1M,making it ideal for high-volume applications and cost-conscious projects.
Grok 4.5 (high) has the strongest reasoning profile with a 62.4 reasoning score,combining the available reasoning-heavy benchmarks.
Grok 4.5 (high) reaches a 72.4 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
o3-pro
- General-purpose AI
- Versatile applications
Grok 4.5 (high)
- Cost-sensitive applications
- High-volume processing
- Complex reasoning tasks
- Research & analysis
- Code generation
- Software development
