Grok 4.20 Beta by OpenRouter — Specs, Pricing & Capabilities | whichllm

Model ID x-ai/grok-4.20-beta

Provider OpenRouter

Family grok

Status beta

Knowledge Cutoff -

Release Date 2026-03-12

Input Modalities text, image

Output Modalities text

Context Window 2000000

Input Limit -

Output Limit 30000

Tool Calling Yes

Reasoning Yes

Structured Output -

Temperature Control Yes

Open Weights No

Input Cost / 1M tokens $2.00

Output Cost / 1M tokens $6.00

Reasoning Cost / 1M tokens -

Cache Read Cost / 1M tokens $0.20

Cache Write Cost / 1M tokens -