Model Comparison
V4 Pro (Reasoning, Max Effort)
vs. Grok 4.1 Fast (Reasoning)
Comparing 2 AI models · 10 benchmarks · DeepSeek, xAI
Recommended Pick
De V4 Pro (Reasoning, Max Effort) 9 metric wins Strongest on: Throughput, Intelligence, Coding
Lowest Price
Grok 4.1 Fast (Reasoning)
$0.00/1M input price
Best Reasoning
Grok 4.1 Fast (Reasoning)
64.0 reasoning score
Blends available reasoning benchmarks
Best for Coding
V4 Pro (Reasoning, Max Effort)
47.5 coding index
Composite Indices
Higher is better; speed and price are normalized
Standard Benchmarks
Only benchmarks with data are shown
Differences That Matter
Price gap
Grok 4.1 Fast (Reasoning) is ∞x cheaper on input tokens than V4 Pro (Reasoning, Max Effort).
Reasoning gap
Grok 4.1 Fast (Reasoning) leads V4 Pro (Reasoning, Max Effort) by 5.3 points on reasoning.
Coding gap
V4 Pro (Reasoning, Max Effort) leads Grok 4.1 Fast (Reasoning) by 16.6 points on coding.
Top-pick rationale
V4 Pro (Reasoning, Max Effort) wins 9 measurable categories, including Throughput, Intelligence, Coding, GPQA.
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
V4 Pro (Reasoning, Max Effort)
DeepSeek
TTFT
—
Time
—
tok/s
—
Tokens
—
Cost
—
Grok 4.1 Fast (Reasoning)
xAI
TTFT
—
Time
—
tok/s
—
Tokens
—
Cost
—
Which answer was more useful?
Full Comparison
| Metric | Top Pick De V4 Pro (Reasoning, Max Effort) | xA Grok 4.1 Fast (Reasoning) |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $0.43/1M | $0.00/1M |
| Output Cost | $0.87/1M | $0.00/1M |
| Blended (3:1) | $0.54/1M | — |
| Specifications | ||
| Organization | DeepSeek | xAI |
| Release Date | Apr 24, 2026 | Nov 19, 2025 |
| Performance & Speed | ||
| Throughput | 88.5 tok/s | — |
| TTFT | 1098ms | — |
| Latency | 50519ms | — |
| Composite Indices | ||
| Value Score | 100.0 | — |
| Reasoning Score | 58.7 | 64.0 |
| Intelligence | 51.5 | 38.6 |
| Coding | 47.5 | 30.9 |
| Math | — | 89.3 |
| Standard Benchmarks | ||
| GPQA | 88.8% | 85.3% |
| MMLU Pro | — | 85.4% |
| HLE | 35.9% | 17.6% |
| LiveCodeBench | — | 82.2% |
| AIME 2025 | — | 89.3% |
| SciCode | 50.0% | 44.2% |
| LCR | 66.3% | 68.0% |
| IFBench | 76.5% | 52.7% |
| TAU-bench v2 | 96.2% | 93.3% |
| TerminalBench Hard | 46.2% | 24.2% |
Key Takeaways
Grok 4.1 Fast (Reasoning) offers the best value at $0.00/1M, making it ideal for high-volume applications and cost-conscious projects.
Grok 4.1 Fast (Reasoning) has the strongest reasoning profile with a 64.0 reasoning score, combining the available reasoning-heavy benchmarks.
V4 Pro (Reasoning, Max Effort) reaches a 47.5 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
V4 Pro (Reasoning, Max Effort)
- Code generation
- Software development
Grok 4.1 Fast (Reasoning)
- Cost-sensitive applications
- High-volume processing
- Complex reasoning tasks
- Research & analysis
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