xAI/ Grok
Grok 4.20 (Reasoning)
xai/grok/4-20-0309-reasoning
Reasoning Grok for document-heavy analysis and long-horizon tool use
Released
2026-03-09
Context window
1M
Max output
30K
Weights
Closed
Modalities
Input
TextImageDocument
Output
Text
Identity
- Version
- grok-4.20-0309-reasoning
- Aliases
- Grok 4.20 (Reasoning)
Providers
| Provider | Provider model ID | Protocol | Context | Max output | Input | Output | Capabilities | Notes | Pricing | Streaming |
|---|---|---|---|---|---|---|---|---|---|---|
| xAI | grok-4.20-0309-reasoning | custom | 1M | 30K | TextImageDocument | Text | AttachmentsReasoningTool callStructuredTemperature | - | input $1.25/M · cache read $0.2/M output $2.5/M | Yes |
| Merge Gateway | xai/grok-4.20-0309-reasoning | openai_chat | 1M | 30K | TextImageDocument | Text | AttachmentsReasoningTool callStructuredTemperature | - | input $1.25/M · cache read $0.2/M output $2.5/M | Yes |
Capabilities
AttachmentsReasoningTool callStructuredTemperature
Official price
input $1.25/M · cache read $0.2/M
output $2.5/M