whichllm — Browse and compare AI model specs and pricing

LLM Gateway

Grok 4.5 model ID, context window & pricing

grok

Quick facts

Model ID grok-4-5
Source LLM Gateway
Context Window 500000
Pricing $2.00 input / $6.00 output per 1M tokens
Capabilities tool calling, reasoning, temperature control

Model overview

Grok 4.5 is an AI model from LLM Gateway with 500000 token context window and text, image input support.

Published pricing is $2.00 input and $6.00 output per 1M tokens.

  • Workloads that use text, image inputs with text outputs.
  • Agent and tool workflows that need function calling.
  • Reasoning-heavy prompts where stepwise problem solving matters.
Model ID grok-4-5
Provider LLM Gateway
Family grok
Status -
Knowledge Cutoff -
Release Date 2026-07-08
Input Modalities text, image
Output Modalities text
Context Window 500000
Input Limit -
Output Limit 500000
Tool Calling Yes
Reasoning Yes
Structured Output No
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 $0.50
Cache Write Cost / 1M tokens -