Model Comparison
GPT-5.2 (xhigh)
vs. Grok 4.6 (high)
Comparing 2 AI models · 10 benchmarks · OpenAI, SpaceXAI
Recommended Pick
SpGrok 4.6 (high)8 metric winsStrongest on: Value, Output price, Blended price
Best Value
Grok 4.6 (high)
100.0 value score
66.2 reasoning / $3.00/1M
Lowest Price
GPT-5.2 (xhigh)
$1.75/1M input price
Best Reasoning
GPT-5.2 (xhigh)
73.9 reasoning score
Blends available reasoning benchmarks
Best for Coding
Grok 4.6 (high)
76.8 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 4.6 (high) has the strongest quality-to-price mix at 100.0 out of 100 value points.
Price gap
GPT-5.2 (xhigh) is 1.1x cheaper on input tokens than Grok 4.6 (high).
Reasoning gap
GPT-5.2 (xhigh) leads Grok 4.6 (high) by 7.6 points on reasoning.
Top-pick rationale
Grok 4.6 (high) wins 8 measurable categories, including Value, Output price, Blended price, Throughput.
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
GPT-5.2 (xhigh)
OpenAI
TTFT
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Time
—
tok/s
—
Tokens
—
Cost
—
Grok 4.6 (high)
SpaceXAI
TTFT
—
Time
—
tok/s
—
Tokens
—
Cost
—
Which answer was more useful?
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Full Comparison
| Metric | Op GPT-5.2 (xhigh) | Top Pick Sp Grok 4.6 (high) |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $1.75/1M | $2.00/1M |
| Output Cost | $14.00/1M | $6.00/1M |
| Blended (3:1) | $4.81/1M | $3.00/1M |
| Specifications | ||
| Organization | OpenAI | SpaceXAI |
| Release Date | Dec 11, 2025 | Aug 12, 2026 |
| Performance & Speed | ||
| Throughput | — | 62.2 tok/s |
| TTFT | — | 40450ms |
| Latency | — | 40450ms |
| Composite Indices | ||
| Value Score | 69.5 | 100.0 |
| Reasoning Score | 73.9 | 66.2 |
| Intelligence | 43.3 | 60.9 |
| Coding | — | 76.8 |
| Math | 99.0 | — |
| Standard Benchmarks | ||
| GPQA | 90.3% | 94.9% |
| MMLU Pro | 87.4% | — |
| HLE | 37.7% | 42.9% |
| LiveCodeBench | 88.9% | — |
| AIME 2025 | 99.0% | — |
| SciCode | 52.1% | 53.6% |
| LCR | 79.3% | 75.0% |
| IFBench | 75.4% | — |
| TAU-bench v2 | 84.8% | — |
| TerminalBench Hard | 47.0% | — |
Key Takeaways
GPT-5.2 (xhigh) offers the best value at $1.75/1M,making it ideal for high-volume applications and cost-conscious projects.
GPT-5.2 (xhigh) has the strongest reasoning profile with a 73.9 reasoning score,combining the available reasoning-heavy benchmarks.
Grok 4.6 (high) reaches a 76.8 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-5.2 (xhigh)
- Cost-sensitive applications
- High-volume processing
- Complex reasoning tasks
- Research & analysis
Grok 4.6 (high)
- Code generation
- Software development
