Grok 3 Mini Fast High is xAI's language model, starting at $1.25 / 1M input and $2.50 / 1M output. A compact, fast-inference variant of Grok 3 Mini tuned for high-quality reasoning at reduced latency.
Specifications
Canonical IDxai-grok-3-mini-fast-high
TypeLanguage
StatusActive
CreatorxAIxAI
Providers
Input ModalitiesText
Output ModalitiesText

Capabilities

Input1/5
Text
Image·
Audio·
Video·
PDF·
Output1/5
Text
Image·
Audio·
Video·
Embedding·
Capabilities0/13
Reasoning·
Adaptive Reasoning·
Function Calling·
Parallel Function Calling·
Structured Outputs·
Native JSON Schema·
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching·
Assistant Prefill·

Pricing by Provider

ProviderStandardBatch
Input
$ / 1M
Output
$ / 1M
Cache Read
$ / 1M
Input
$ / 1M
Output
$ / 1M
Cache Read
$ / 1M
xAI logo
xAI
grok-3-mini-fast-high
$1.25$2.50$0.200$0.625$1.25$0.100

Cost Calculator

Preset:

Versions

VersionReleasedContextInput / 1MOutput / 1MStatus
Grok 3 Mini131K$0.250$0.500Deprecated
Grok 3 Mini Beta131K$1.25$2.50Deprecated
Grok 3 Mini Fast131K$0.600$2.50Available
Grok 3 Mini Fast High$1.25$2.50Current
Grok 3 Mini ReasoningAvailable
Grok 3 Mini Fast High Beta$1.25$2.50Available
Grok 3 Mini High$1.25$2.50Available
Grok 3 Mini High Beta$1.25$2.50Available

Other models

ModelTierReleasedContextInput / 1MOutput / 1M
Grok 4.31.0M$1.25$2.50
Grok 4.202.0M$1.25$2.50
Grok 4.20 Multi-Agent2.0M$1.25$2.50
Grok 4.20 Multi-Agent Beta2.0M$1.25$2.50
Grok 4.20 Non-Reasoning2.0M$1.25$2.50
Grok 4.20 Reasoning2.0M$1.25$2.50
Grok 4.1 Fast2.0M$1.25$2.50
Grok 4 Fast131K$0.200$0.500
Grok 4 Fast Non-Reasoning2.0M$0.200$0.500
Grok 4256K$1.25$2.50

Model IDs