| Signal | Grok 4.1 Fast | Delta | Llama 3.1 405B (base) |
|---|---|---|---|
Capabilities | 86 | +71 | |
Context window size | 100 | +28 | |
Output Capacity | 75 | -1 | |
Pricing Tier | 1 | -3 | |
Recency | 100 | +73 | |
Versatility | 50 | +17 | |
| Overall Result | 4 wins | of 6 | 2 wins |
30
days ranked higher
0
days
0
days ranked higher
xAI
Meta
Grok 4.1 Fast saves you $555.00/month
That's $6660.00/year compared to Llama 3.1 405B (base) at your current usage level of 100K calls/month.
| Metric | Grok 4.1 Fast | Llama 3.1 405B (base) | Winner |
|---|---|---|---|
| Overall Score | 64 | 30 | Grok 4.1 Fast |
| Rank | #34 | #275 | Grok 4.1 Fast |
| Quality Rank | #34 | #275 | Grok 4.1 Fast |
| Adoption Rank | #34 | #275 | Grok 4.1 Fast |
| Parameters | -- | 405B | -- |
| Context Window | 2000K | 33K | Grok 4.1 Fast |
| Pricing | $0.20/$0.50/M | $4.00/$4.00/M | -- |
| Signal Scores | |||
| Capabilities | 86 | 14 | Grok 4.1 Fast |
| Context window size | 100 | 72 | Grok 4.1 Fast |
| Output Capacity | 75 | 75 | Llama 3.1 405B (base) |
| Pricing Tier | 1 | 4 | Llama 3.1 405B (base) |
| Recency | 100 | 27 | Grok 4.1 Fast |
| Versatility | 50 | 33 | Grok 4.1 Fast |
Grok 4.1 Fast clearly outperforms Llama 3.1 405B (base) with a significant 33.7-point lead. For most general use cases, Grok 4.1 Fast is the stronger choice. However, Llama 3.1 405B (base) may still excel in niche scenarios.
Best for Quality
Grok 4.1 Fast
Marginally better benchmark scores; both are excellent
Best for Cost
Grok 4.1 Fast
91% lower pricing; better value at scale
Best for Reliability
Grok 4.1 Fast
Higher uptime and faster response speeds
Best for Prototyping
Grok 4.1 Fast
Stronger community support and better developer experience
Best for Production
Grok 4.1 Fast
Wider enterprise adoption and proven at scale
by xAI
| Capability | Grok 4.1 Fast | Llama 3.1 405B (base) |
|---|---|---|
| Vision (Image Input)differs | ||
| Function Callingdiffers | ||
| Streaming | ||
| JSON Modediffers | ||
| Reasoningdiffers | ||
| Web Searchdiffers | ||
| Image Output |
xAI
Meta
Grok 4.1 Fast saves you $11.04/month
That's 92% cheaper than Llama 3.1 405B (base) at 1,000 tokens/request and 100 requests/day.
Assumes 60% input / 40% output token ratio per request. Actual costs may vary based on your usage pattern.
| Parameter | Grok 4.1 Fast | Llama 3.1 405B (base) |
|---|---|---|
| Context Window | 2M | 33K |
| Max Output Tokens | 30,000 | 32,768 |
| Open Source | No | Yes |
| Created | Nov 19, 2025 | Aug 2, 2024 |
Grok 4.1 Fast currently scores higher (64 vs 30), but the best choice depends on your specific use case, budget, and requirements.
Grok 4.1 Fast is ranked #34 and Llama 3.1 405B (base) is ranked #275. Rankings are based on a composite score from multiple signals including benchmarks, community sentiment, and adoption metrics.
Compare the detailed pricing breakdown above to see which model offers better value for your usage pattern.