Cost Comparison (1000 input + 500 output tokens, 100 requests/day)
Grok 3
Grok 4
Cost Differences
Grok 4 costs less than Grok 3
Feature Comparison
| Feature | Grok 3 | Grok 4 |
|---|---|---|
| Provider | xAI | xAI |
| Input Price | $3.00/1M tokens | $3.00/1M tokens |
| Output Price | $15.00/1M tokens | $15.00/1M tokens |
| Context Window | 131,072 tokens | 256,000 tokens |
| Max Output | 131,072 tokens | 131,072 tokens |
| Category | flagship | reasoning |
| Capabilities | textvisionreasoningcode | textvisionreasoningcode |
| Release Date | 2/17/2025 | 7/9/2025 |
Grok 3 vs Grok 4: Which Should You Choose?
Choosing between Grok 3 and Grok 4 depends on your priorities: cost efficiency, context length, or raw capability. Grok 4 is the more affordable option at $3.00/1M input tokens. Meanwhile, Grok 4 offers a significantly larger context window at 256,000 tokens vs 131,072 for Grok 3.
These models target different tiers: Grok 3 is a flagship model while Grok 4 is reasoning. This means they're optimized for different workloads. Grok 3 is built for complex tasks that require deeper reasoning, while Grok 4 offers better value for routine operations.
Output costs matter too. Grok 3 charges $15.00/1M output tokens vs $15.00 for Grok 4.
Multimodal capabilities: Both models support vision (image understanding), so you can send images alongside text prompts with either option.
Best Use Cases
Choose Grok 3 when:
- • You're already using xAI's API ecosystem
Choose Grok 4 when:
- • You need a larger context window (256,000 tokens)
- • You're already using xAI's API ecosystem
Try Different Scenarios
Use the calculator below to see how costs change with different usage patterns
Grok 3 (xAI)
Grok 4 (xAI)
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