Grok 4.1 Fast by Venice AI — Specs, Pricing & Capabilities | whichllm

Model ID grok-41-fast

Provider Venice AI

Family grok

Status -

Knowledge Cutoff 2025-07

Release Date 2025-12-01

Input Modalities text, image

Output Modalities text

Context Window 1000000

Input Limit -

Output Limit 30000

Tool Calling Yes

Reasoning Yes

Structured Output Yes

Temperature Control Yes

Open Weights No

Input Cost / 1M tokens $0.23

Output Cost / 1M tokens $0.57

Reasoning Cost / 1M tokens -

Cache Read Cost / 1M tokens $0.06

Cache Write Cost / 1M tokens -