Model Comparison
V2.5 (Dec '24)
vs. Grok 4.1 Fast (Reasoning)
Comparing 2 AI models · 0 benchmarks · DeepSeek, SpaceXAI
Recommended Pick
Strongest on: Reasoning, Intelligence
Best Reasoning
Grok 4.1 Fast (Reasoning)
20.4 reasoning score
Blends available reasoning benchmarks
Differences That Matter
Reasoning gap
Grok 4.1 Fast (Reasoning) leads V2.5 (Dec '24) by 13.8 points on reasoning.
Top-pick rationale
Grok 4.1 Fast (Reasoning) wins 2 measurable categories, including Reasoning, Intelligence.
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
V2.5 (Dec '24)
DeepSeek
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 4.1 Fast (Reasoning)
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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Which answer was more useful?
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Full Comparison
| Metric | De V2.5 (Dec '24) | Top Pick Sp Grok 4.1 Fast (Reasoning) |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | — | — |
| Output Cost | — | — |
| Specifications | ||
| Organization | DeepSeek | SpaceXAI |
| Release Date | Dec 10, 2024 | Nov 19, 2025 |
| Performance & Speed | ||
| Throughput | — | — |
| TTFT | — | — |
| Latency | — | — |
| Composite Indices | ||
| Reasoning Score | 6.6 | 20.4 |
| Intelligence | 6.6 | 20.4 |
Key Takeaways
Grok 4.1 Fast (Reasoning) has the strongest reasoning profile with a 20.4 reasoning score,combining the available reasoning-heavy benchmarks.
All models support context windows of ∞+ tokens,suitable for processing lengthy documents and maintaining extended conversations.
When to Choose Each Model
V2.5 (Dec '24)
- General-purpose AI
- Versatile applications
Grok 4.1 Fast (Reasoning)
- Complex reasoning tasks
- Research & analysis
