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Model details
grok-4-fast-reasoning
Find out what this model does, when it was released, and which provider serves it.
Jiekou.AIgrok-4-fast-reasoninggrok
Quick Info
- Provider
- Jiekou.AI
- Model key
- grok-4-fast-reasoning
- Release date
- Jan 1, 2026
- Last updated
- Jan 1, 2026
- Knowledge
- Unknown
- Input modalities
- text, image
- Output modalities
- text
- Capabilities
- Tool calling, Structured output, Attachments, Temp controls
- Cost summary
- In $0.18 · Out $0.45
- Limit summary
- 2,000,000 token context window
Cost
- Input token cost
- $0.18
- Output token cost
- $0.45
Limits
- Output tokens
- 2,000,000 tokens
- Context window
- 2,000,000 tokens