xAI/ Grok
Grok 4.20
xai/grok-4.20
Grok 4.20 is a reasoning model from xAI with industry-leading speed and agentic tool calling capabilities. It combines the lowest hallucination rate on the market with strict prompt adherance, delivering...
Released
2026-03-31
Context window
2M
Weights
Closed
Modalities
Input
TextImageDocument
Output
Text
Identity
- Version
- grok-4.20
- Knowledge cutoff
- 2025-09-01
Providers
| Provider | Provider model ID | Protocol | Context | Max output | Input | Output | Capabilities | Notes | Pricing | Streaming |
|---|---|---|---|---|---|---|---|---|---|---|
| OpenRouter | x-ai/grok-4.20 | openai_chat | 2M | - | TextImageDocument | Text | ReasoningTool callStructuredTemperature | - | input $1.25/M · cache read $0.2/M output $2.5/M | Yes |
| NanoGPT | x-ai/grok-4.20 | openai_chat | 2M | - | TextImageDocument | Text | ReasoningTool callStructuredTemperature | - | input $2/M · cache read $1/M output $6/M | Yes |
| Kilo Gateway | x-ai/grok-4.20 | openai_chat | 2M | - | TextImageDocument | Text | ReasoningTool callStructuredTemperature | - | input $1.25/M · cache read $0.2/M output $2.5/M | Yes |
Capabilities
ReasoningTool callStructuredTemperature