Detailed comparison of capabilities, features, and performance.
| Feature | Grok 4 Fast | Gemini 2.5 Flash |
|---|---|---|
| AI Lab | xAI | |
| Context Size | 2,000,000 tokens | 1,048,576 tokens |
| Max Output Size | 30,000 tokens | 64,000 tokens |
| Frontier Model | Yes | No |
| Vision Support | No | Yes |
| Description | Faster Grok 4 with identical quality (2m context). Low latency for time-sensitive tasks and huge context window. | Multimodal model that is fast, token efficient and performant for complex tasks. 1M context window. |
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View model details →Access both Grok 4 Fast and Gemini 2.5 Flash in a single workspace without managing multiple API keys.
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