OpenRouterGrok 4.20 model ID, context window & pricing
grok
Quick facts
Model ID x-ai/grok-4.20
Source OpenRouter
Context Window 2000000
Pricing $1.25 input / $2.50 output per 1M tokens
Capabilities tool calling, reasoning, structured output, temperature control
Model overview
Grok 4.20 is an AI model from OpenRouter with 2000000 token context window and text, image, pdf input support.
Published pricing is $1.25 input and $2.50 output per 1M tokens.
- Workloads that use text, image, pdf inputs with text outputs.
- Agent and tool workflows that need function calling.
- Reasoning-heavy prompts where stepwise problem solving matters.
Model ID x-ai/grok-4.20
Provider OpenRouter
Family grok
Status -
Knowledge Cutoff 2025-09-01
Release Date 2026-03-31
Input Modalities text, image, pdf
Output Modalities text
Context Window 2000000
Input Limit -
Output Limit 2000000
Tool Calling Yes
Reasoning Yes
Structured Output Yes
Temperature Control Yes
Open Weights No
Input Cost / 1M tokens $1.25
Output Cost / 1M tokens $2.50
Reasoning Cost / 1M tokens -
Cache Read Cost / 1M tokens $0.20
Cache Write Cost / 1M tokens -