Grok 4
by FastRouter · family grok · listed Jul 2025RT
Grok model for agentic tool use, reasoning, coding, and live assistance
Current rates USD per 1M tokens
Input$3.00
Output$15.00
Cache read$0.75
Cache write$15.00
Against the market
On the record
- Model id
x-ai/grok-4- Context window
- 256K tokens
- Max output
- 64K tokens
- Input modalities
- text
- Output modalities
- text
- Reasoning
- yes
- Tool calls
- yes
- Open weights
- no
- Knowledge cutoff
- Jul 2025
- Released
- 2025-07-09
- Last updated
- 2025-07-09
- Provider docs
- fastrouter.ai/models
Back of the envelope
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