Gemini 3.8 Flash vs Grok 4.7
How Google AI's Gemini 3.8 Flash and xAI's Grok 4.7 differ on paper, from the specs each provider publishes.
Compare them on your promptBoth answer side by side, free with your own API keys.
Key differences
- Gemini 3.8 Flash accepts a larger context window: 1.05M tokens versus 500K for Grok 4.7.
- Gemini 3.8 Flash can write longer replies, up to 66K output tokens against 33K.
Side by side
| Spec | Gemini 3.8 Flash | Grok 4.7 |
|---|---|---|
| Provider | Google AI | xAI |
| Released | September 2026 | September 2026 |
| Context window | 1.05M tokens | 500K tokens |
| Max output | 66K tokens | 33K tokens |
| Reasoning model | Yes | Yes |
| Price per 1M tokens (in / out) | See provider | See provider |
| Capabilities | Image input, Reasoning, Coding, Tool calling, Structured output, Streaming | Image input, Reasoning, Coding, Tool calling, Structured output, Streaming |
Specs as published by each provider. Benchmarks and output quality aren't covered here; the best test is your own prompts.
Specs only go so far. Ask both.
Send one message and get Gemini 3.8 Flash and Grok 4.7's answers side by side, with response time, tokens and cost for each. You'll need Google AI and xAI keys.
Open Gemini 3.8 Flash vs Grok 4.7