xAI Grok 2 and Meta Llama 3.1 405B are closely matched ai language models devices with nearly identical overall scores (6.3 vs 6.2). The best choice depends on which specific features matter most to you.
Scores are relative within the ai language modelscategory. Percentages show each dimension's weight in the overall score. A difference of less than 0.5 points is considered a tie.
✓ Pros
✗ Cons
✓ Pros
✗ Cons
Lower cost = better value. Free = open-source self-hosted.
| Metric | Grok 2 | 3.1 405B |
|---|---|---|
| Input (Prompt) | $2.00/1M | ✓Free/1M |
| Output (Completion) | $10.00/1M | ✓Free/1M |
| Open Source | Proprietary | ✓ Free |
Context Window (tokens)
| Metric | Grok 2 | 3.1 405B |
|---|---|---|
| Max Output | 4,096 tok | 4,096 tok |
| Speed | ✓100 tok/s | 30 tok/s |
| Time to First Token | ✓600ms | 1.5s |
| Languages | ✓25+ | 8+ |
Higher is better. Industry-standard AI evaluation benchmarks.
Grok 2
3.1 405B
Grok 2
3.1 405B
Grok 2
3.1 405B
Grok 2
3.1 405B
Grok 2
3.1 405B
| Feature | Grok 2 | 3.1 405B |
|---|---|---|
| Reasoning / Chain-of-Thought | ✕ | ✕ |
| Vision (Image Input) | ✓ | ✕ |
| Audio Input | ✕ | ✕ |
| Video Input | ✕ | ✕ |
| Image/Audio Output | ✕ | ✕ |
| Function Calling / Tools | ✓ | ✓ |
| JSON Mode | ✓ | ✓ |
| Real-time Web Access | ✓ | ✕ |
| Fine-tuning Support | ✕ | ✓ |
| Batch API | ✕ | ✓ |
| Streaming | ✓ | ✓ |
| Open Source | ✕ | ✓ |
| Field | Grok 2 | 3.1 405B |
|---|---|---|
| Provider | xAI | Meta |
| Parameters | — | 405B |
| Knowledge Cutoff | real-time | 2023-12 |
| License | Commercial | Llama 3.1 Community |
| Best For | current eventsresearchreal time infogeneral | open sourceself hostingfine tuningenterprise privacy |
Buy xAI Grok 2 if…
The xAI Grok 2 is worth considering if you prefer its specific design, ecosystem, or brand — though it scores lower overall in our comparison.
Buy Meta Llama 3.1 405B if…
Choose the Meta Llama 3.1 405B if budget is your top priority — it offers competitive specs at a lower price point.
xAI Grok 2 and Meta Llama 3.1 405B are closely matched ai language models devices with nearly identical overall scores (6.3 vs 6.2). The best choice depends on which specific features matter most to you.
Both products score similarly — it depends on your priorities.
Check the latest prices using the buy links above.
The xAI Grok 2 is worth considering if you prefer its specific design, ecosystem, or brand — though it scores lower overall in our comparison.
Choose the Meta Llama 3.1 405B if budget is your top priority — it offers competitive specs at a lower price point.