Key Takeaways
Grok 3 wins:
- Faster response time
Grok 4 wins:
- Larger context window
- Higher intelligence benchmark
- Better at coding
- Better at math
- Supports vision
Price Advantage
Grok 3
Benchmark Advantage
Grok 4
Context Window
Grok 4
Speed
Grok 3
Pricing Comparison
Price Comparison
| Metric | Grok 3 | Grok 4 | Winner |
|---|---|---|---|
| Input (per 1M tokens) | $3.00 | $3.00 | Tie |
| Output (per 1M tokens) | $15.00 | $15.00 | Tie |
| Cache Read (per 1M) | $750000.00 | $750000.00 | Tie |
Both models have similar overall pricing.
Grok 3 Providers
Vercel $3.00 (Cheapest)
xAI $3.00 (Cheapest)
Azure $3.00 (Cheapest)
Grok 4 Providers
Vercel $3.00 (Cheapest)
xAI $3.00 (Cheapest)
Benchmark Comparison
8
Benchmarks Compared
0
Grok 3 Wins
7
Grok 4 Wins
Benchmark Scores
| Benchmark | Grok 3 | Grok 4 | Winner |
|---|---|---|---|
Intelligence Index Overall intelligence score | 25.0 | 41.4 | |
Coding Index Code generation & understanding | 19.8 | 40.5 | |
Math Index Mathematical reasoning | 58.0 | 92.7 | |
MMLU Pro Academic knowledge | 79.9 | 86.6 | |
GPQA Graduate-level science | 69.3 | 87.7 | |
LiveCodeBench Competitive programming | 42.5 | 81.9 | |
Aider Real-world code editing | - | 79.6 | - |
AIME Competition math | 33.0 | 94.3 |
Grok 4 significantly outperforms in coding benchmarks.
Cost vs Quality
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Grok 3
Other models
Context & Performance
Context Window
Grok 3
131,072
tokens
Grok 4
256,000
tokens
Grok 4 has a 49% larger context window.
Speed Performance
| Metric | Grok 3 | Grok 4 | Winner |
|---|---|---|---|
| Tokens/second | 62.5 tok/s | 38.5 tok/s | |
| Time to First Token | 0.73s | 15.96s |
Grok 3 responds 62% faster on average.
Capabilities
Feature Comparison
| Feature | Grok 3 | Grok 4 |
|---|---|---|
| Vision (Image Input) | ||
| Tool/Function Calls | ||
| Reasoning Mode | ||
| Audio Input | ||
| Audio Output | ||
| PDF Input | ||
| Prompt Caching | ||
| Web Search |
License & Release
| Property | Grok 3 | Grok 4 |
|---|---|---|
| License | Proprietary | Proprietary |
| Author | Xai | Xai |
| Released | Jun 2025 | Jul 2025 |
Grok 3 Modalities
Input
text
Output
text
Grok 4 Modalities
Input
imagetext
Output
text