Grok 4.20 (Reasoning)
xAI · Reasoning Grok for document-heavy analysis and long-horizon tool use
Key facts
- Provider
- xAI
- Context window
- 1M tokens
- Max output
- 30K tokens
- Input price
- $1.25 / M tok
- Output price
- $2.5 / M tok
- Knowledge cutoff
- —
- Released
- Mar 9, 2026
- License
- —
Capabilities
ReasoningTool callingStructured outputFile attachmentsTemperature controlOpen weights
Pricing
USD per million tokens, list API rates.
- Input
- $1.25
- Output
- $2.5
- Cache read
- $0.2
- Cache write
- —
Modalities
- Input
- Text, Image, Pdf
- Output
- Text