Grok 4.5

SpaceXAI's intelligent coding model for agentic software, engineering, and workflow tasks.

xAIgrok-4.52026-07-08Report incorrect data

Specs

Context: 500K
Max output: —
Input price: $2/ 1M tokens
Output price: $6/ 1M tokens
Released: 2026-07-08

Context

Context window: 500K
Max input: —
Max output: —

Pricing · USD / 1M tokens

Input: $2
Output: $6
Cache read: $0.3
Cache write: —

Modalities

Input: TextImage
Output: Text

API

API types: chatresponses

Reasoning

Reasoning: Yes
Levels: lowmediumhighxhigh

Info

Status: Active
Released: 2026-07-08
Knowledge cutoff: —

Features

Confirmed: toolsstructured_outputcaching

How to call

xaimodel = grok-4.5reasoning = reasoning_effort

chat

POSThttps://api.x.ai/v1/chat/completions

responses

POSThttps://api.x.ai/v1/responses

JSON

grok-4.5.json

{
  "id": "grok-4.5",
  "object": "model",
  "created": 1783468800,
  "owned_by": "xai",
  "name": "Grok 4.5",
  "api": {
    "types": [
      "chat",
      "responses"
    ]
  },
  "limits": {
    "context": 500000,
    "input": null,
    "output": null
  },
  "modalities": {
    "input": [
      "text",
      "image"
    ],
    "output": [
      "text"
    ]
  },
  "reasoning": {
    "supported": true,
    "efforts": [
      "low",
      "medium",
      "high",
      "xhigh"
    ]
  },
  "pricing": {
    "currency": "USD",
    "unit": "1M_tokens",
    "input": 2,
    "output": 6,
    "cache_read": 0.3,
    "cache_write": null
  },
  "features": [
    "tools",
    "structured_output",
    "caching"
  ],
  "info": {
    "status": "active",
    "release_date": "2026-07-08",
    "knowledge_cutoff": null,
    "description": "SpaceXAI's intelligent coding model for agentic software, engineering, and workflow tasks.",
    "docs": "https://docs.x.ai/developers/models/grok-4.5",
    "verified_at": "2026-10-11"
  }
}

Official sources