Key Takeaways
Llama 3.1 405B Instruct wins:
- Cheaper input tokens
- Cheaper output tokens
Grok 4 wins:
- Larger context window
- Faster response time
- Higher intelligence benchmark
- Better at coding
- Better at math
- Supports vision
- Has reasoning mode
Price Advantage
Llama 3.1 405B Instruct
Benchmark Advantage
Grok 4
Context Window
Grok 4
Speed
Grok 4
Pricing Comparison
Price Comparison
| Metric | Llama 3.1 405B Instruct | Grok 4 | Winner |
|---|---|---|---|
| Input (per 1M tokens) | $0.90 | $3.00 | Llama 3.1 405B Instruct |
| Output (per 1M tokens) | $0.90 | $15.00 | Llama 3.1 405B Instruct |
| Cache Read (per 1M) | $0.45 | $0.75 | Llama 3.1 405B Instruct |
Using a 3:1 input/output ratio, Llama 3.1 405B Instruct is 85% cheaper overall.
Llama 3.1 405B Instruct Providers
No provider data available
Grok 4 Providers
No provider data available
Benchmark Comparison
8
Benchmarks Compared
0
Llama 3.1 405B Instruct Wins
8
Grok 4 Wins
Benchmark Scores
| Benchmark | Llama 3.1 405B Instruct | Grok 4 | Winner |
|---|---|---|---|
Intelligence Index Overall intelligence score | 17.4 | 41.5 | |
Coding Index Code generation & understanding | 14.5 | 40.5 | |
Math Index Mathematical reasoning | 3.0 | 92.7 | |
MMLU Pro Academic knowledge | 73.2 | 86.6 | |
GPQA Graduate-level science | 51.5 | 87.7 | |
LiveCodeBench Competitive programming | 30.5 | 81.9 | |
Aider Real-world code editing | 66.2 | 79.6 | |
AIME Competition math | 21.3 | 94.3 |
Grok 4 significantly outperforms in coding benchmarks.
Cost vs Quality
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Llama 3.1 405B Instruct
Other models
Context & Performance
Context Window
Llama 3.1 405B Instruct
131,000
tokens
Grok 4
256,000
tokens
Grok 4 has a 49% larger context window.
Speed Performance
| Metric | Llama 3.1 405B Instruct | Grok 4 | Winner |
|---|---|---|---|
| Tokens/second | 33.7 tok/s | 48.1 tok/s | |
| Time to First Token | 0.71s | 10.29s |
Grok 4 responds 43% faster on average.
Capabilities
Feature Comparison
| Feature | Llama 3.1 405B Instruct | Grok 4 |
|---|---|---|
| Vision (Image Input) | ||
| Tool/Function Calls | ||
| Reasoning Mode | ||
| Audio Input | ||
| Audio Output | ||
| PDF Input | ||
| Prompt Caching | ||
| Web Search |
License & Release
| Property | Llama 3.1 405B Instruct | Grok 4 |
|---|---|---|
| License | Open Source | Proprietary |
| Author | Meta-llama | Xai |
| Released | Jul 2024 | Jul 2025 |
Llama 3.1 405B Instruct Modalities
Input
text
Output
text
Grok 4 Modalities
Input
imagetext
Output
text