grok-4.5

proprietary
Context
500K
Input price
$2/1M tokens
Output price
$6/1M tokens

Capabilities

Reasoning & Interaction
Reasoning
Tool Calling
Output Control
Structured Output
JSON Mode
Infrastructure
Streaming
Batch Processing

Details

Provider xAI
Creator xai
Familygrok-4.5
Licenseproprietary
Statusactive
Typechat
Input modalitiestext, image
Output modalitiestext
Open weightNo
Parameters—
Architecture—
Context window500K tokens
Max input—
Max output—
Reasoning tokensYes
Knowledge cutoff
Release date—
Sourceofficial

Tools

Function Callingfunction_calling
Call external functions and APIs

Pricing

Input
$2
Output
$6
Cache write
—
Cache read
$0.3
Batch in
—
Batch out
—

Base rate applies < 200k prompt tokens.

≥ 200k prompt tokens: $4 input / $12 output per 1M tokens.

API

GET/v1/models/xai/grok-4.5

grok-4.5

Changes · 4 entries
grok-4.5createca7a400Nov 2, 2026, 03:02 AM
grok-4.5updatec67ed84Jul 31, 2026, 10:28 AM
knowledge_cutoff2024-11→2026-02-01
page_urlhttps://docs.x.ai/developers/models/grok-4.5→https://docs.x.ai/developers/models
pricingcached input$0.5→$0.3
statusdeprecated→active
pricing_notes["Base rate applies < 200k prompt tokens.","≥ 200k prompt...
grok-4.5updatebf78dcfJul 25, 2026, 05:49 AM
statusdeprecated
grok-4.5createb983d60Jul 9, 2026, 02:38 AM