Key Takeaways
Claude 3.5 Sonnet wins:
- Larger context window
- Better at coding
- Supports vision
Grok 3 wins:
- Cheaper input tokens
- Cheaper output tokens
- Faster response time
- Higher intelligence benchmark
- Better at math
Price Advantage
Grok 3
Benchmark Advantage
Grok 3
Context Window
Claude 3.5 Sonnet
Speed
Grok 3
Pricing Comparison
Price Comparison
| Metric | Claude 3.5 Sonnet | Grok 3 | Winner |
|---|---|---|---|
| Input (per 1M tokens) | $6.00 | $3.00 | Grok 3 |
| Output (per 1M tokens) | $30.00 | $15.00 | Grok 3 |
| Cache Read (per 1M) | N/A | $750000.00 | Grok 3 |
Using a 3:1 input/output ratio, Grok 3 is 50% cheaper overall.
Claude 3.5 Sonnet Providers
Vercel $3.00 (Cheapest)
Amazon Bedrock $6.00
Grok 3 Providers
Vercel $3.00 (Cheapest)
xAI $3.00 (Cheapest)
Azure $3.00 (Cheapest)
Benchmark Comparison
8
Benchmarks Compared
1
Claude 3.5 Sonnet Wins
5
Grok 3 Wins
Benchmark Scores
| Benchmark | Claude 3.5 Sonnet | Grok 3 | Winner |
|---|---|---|---|
Intelligence Index Overall intelligence score | 15.9 | 25.0 | |
Coding Index Code generation & understanding | 30.2 | 19.8 | |
Math Index Mathematical reasoning | - | 58.0 | - |
MMLU Pro Academic knowledge | 77.2 | 79.9 | |
GPQA Graduate-level science | 59.9 | 69.3 | |
LiveCodeBench Competitive programming | 38.1 | 42.5 | |
Aider Real-world code editing | 84.2 | - | - |
AIME Competition math | 15.7 | 33.0 |
Claude 3.5 Sonnet significantly outperforms in coding benchmarks.
Cost vs Quality
X-axis:
Y-axis:
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Claude 3.5 Sonnet
Other models
Context & Performance
Context Window
Claude 3.5 Sonnet
200,000
tokens
Max output: 8,192 tokens
Grok 3
131,072
tokens
Claude 3.5 Sonnet has a 34% larger context window.
Speed Performance
| Metric | Claude 3.5 Sonnet | Grok 3 | Winner |
|---|---|---|---|
| Tokens/second | 0.0 tok/s | 62.5 tok/s | |
| Time to First Token | 0.00s | 0.73s |
Grok 3 responds Infinity% faster on average.
Capabilities
Feature Comparison
| Feature | Claude 3.5 Sonnet | Grok 3 |
|---|---|---|
| Vision (Image Input) | ||
| Tool/Function Calls | ||
| Reasoning Mode | ||
| Audio Input | ||
| Audio Output | ||
| PDF Input | ||
| Prompt Caching | ||
| Web Search |
License & Release
| Property | Claude 3.5 Sonnet | Grok 3 |
|---|---|---|
| License | Proprietary | Proprietary |
| Author | Anthropic | Xai |
| Released | Oct 2024 | Jun 2025 |
Claude 3.5 Sonnet Modalities
Input
textimagefile
Output
text
Grok 3 Modalities
Input
text
Output
text