Model Comparison
Grok 4.5 (high)
vs. Gemini 3.1 Pro Preview
Comparing 2 AI models · 7 benchmarks · SpaceXAI, Google
Recommended Pick
SpGrok 4.5 (high)8 metric winsStrongest on: Value, Output price, Blended 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.
Reasoning gap
Grok 4.5 (high) leads Gemini 3.1 Pro Preview by 0.6 points on reasoning.
Coding gap
Grok 4.5 (high) leads Gemini 3.1 Pro Preview by 3.6 points on coding.
Top-pick rationale
Grok 4.5 (high) wins 8 measurable categories, including Value, Output price, Blended price, TTFT.
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
Grok 4.5 (high)
SpaceXAI
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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Gemini 3.1 Pro Preview
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?
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Full Comparison
| Metric | Top Pick Sp Grok 4.5 (high) | Go Gemini 3.1 Pro Preview |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $2.00/1M | $2.00/1M |
| Output Cost | $6.00/1M | $12.00/1M |
| Blended (3:1) | $3.00/1M | $4.50/1M |
| Specifications | ||
| Organization | SpaceXAI | |
| Release Date | Jul 8, 2026 | Feb 19, 2026 |
| Performance & Speed | ||
| Throughput | 132.9 tok/s | 136.8 tok/s |
| TTFT | 12673ms | 24346ms |
| Latency | 12673ms | 24346ms |
| Composite Indices | ||
| Value Score | 100.0 | 66.0 |
| Reasoning Score | 62.4 | 61.8 |
| Intelligence | 53.8 | 46.5 |
| Coding | 72.4 | 68.8 |
| Standard Benchmarks | ||
| GPQA | 93.1% | 94.1% |
| HLE | 40.3% | 44.7% |
| SciCode | 54.1% | 58.9% |
| LCR | 67.7% | 72.7% |
| IFBench | — | 77.1% |
| TAU-bench v2 | — | 95.6% |
| TerminalBench Hard | — | 53.8% |
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
Grok 4.5 (high)
- Cost-sensitive applications
- High-volume processing
- Complex reasoning tasks
- Research & analysis
- Code generation
- Software development
Gemini 3.1 Pro Preview
- General-purpose AI
- Versatile applications
