Grok 4.5 (Fast)

Input price
$4/1M tokens
Output price
$18/1M tokens

Capabilities

Reasoning & Interaction
Reasoning
Infrastructure
Streaming

Details

Model IDgrok-4.5-fast
ProviderCursor
Creatorcursor
Familygrok-4.5
License—
Status—
Typechat
Input modalitiestext
Output modalitiestext
Open weight—
Parameters—
Architecture—
Context window—
Max input—
Max output—
Reasoning tokens—
Knowledge cutoff—
Release date—
Sourceofficial

Pricing

Input
$4
Output
$18
Cache write
—
Cache read
$1
Batch in
—
Batch out
—

Jointly trained by Cursor and SpaceXAI

Family Comparison: grok-4.5

ModelContextMax outPricing
Grok 4.5256K—$2$6
Grok 4.5 (Fast)——$4$18

API

GET/v1/models/cursor/grok-4.5-fast

Grok 4.5 (Fast)

grok-4.5-fast
Changes · 3 entries
grok-4.5-fastcreateca7a400Nov 2, 2026, 03:02 AM
grok-4.5-fastupdatee3d7dedAug 31, 2026, 04:13 AM
pricingoutput$12→$18
grok-4.5-fastcreate3cddff5Aug 13, 2026, 02:54 AM