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

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

Pricing

Context lengthPer 1M tokens
InputOutputCached ReadCached Write
≤ 200K tokens$2$6$0.3—
> 200K tokens$4$12$0.6—

API

GET/v1/models/opencode/grok-4.5

Grok 4.5

grok-4.5
Changes · 3 entries
grok-4.5createca7a400Nov 2, 2026, 03:02 AM
grok-4.5updateb2f45bfOct 29, 2026, 03:29 AM
created_byunknown→xai
pricinginput$2output$6cached input$0.3tiers[{"label":"Context length","unit":"Per 1M tokens","column...
grok-4.5createb983d60Jul 9, 2026, 02:38 AM