Grok 4.5 is xAI's language model with a 500K context window and up to 450K output tokens, available from 4 providers, starting at $2.00 / 1M input and $6.00 / 1M output. A frontier multimodal LLM from xAI with strong performance across coding, STEM, and knowledge work, supporting tool use, web search, vision, and implicit caching.
Specifications
Canonical IDxai-grok-4-5
TypeLanguage
StatusActive
CreatorxAIxAI
Providers
Context Window500K tokens
Max Output450K tokens
Input ModalitiesImagePDFText
Output ModalitiesText
Reasoning Effortsdefault
Release Date · 3 months ago
Benchmarks
Intelligence Index
#36
Coding Index
#18
GPQA
#13
HLE
#29
Time to First Token
#567
SciCode
#28
LCR
#57
Output TPS
#206

Capabilities

Input3/5
Text✓
Image✓
Audio·
Video·
PDF✓
Output1/5
Text✓
Image·
Audio·
Video·
Embedding·
Capabilities6/13
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

US Dollar ($)
Per 1M tokens
ProviderStandardFastBatch
Input
$ / 1M
Output
$ / 1M
Cache Read
$ / 1M
Web Search
$ / request
Input
$ / 1M
Output
$ / 1M
Cache Read
$ / 1M
Input
$ / 1M
Output
$ / 1M
Cache Read
$ / 1M
OpenRouter logo
OpenRouter
x-ai/grok-4.5
$2.00$6.00$0.3$0.0050——————
Perplexity logo
Perplexity
perplexity/xai/grok-4.5
$2.00$6.00$0.3N/A——————
Vercel AI Gateway logo
Vercel AI Gateway
spacexai/grok-4.5
$2.00$6.00$0.3N/A$4.00$12.00$0.6———
xAI logo
xAI
grok-4.5
$2.00$6.00$0.3N/A———$1.00$3.00$0.15

Cost Calculator

US Dollar ($)
Preset:

Versions

VersionReleasedContextInput / 1MOutput / 1MStatus
Grok 4.7524K$2.00$6.00Available
Grok 4.6524K$2.00$6.00Available
Grok 4.5500K$2.00$6.00Current
Grok 4.31.0M$1.25$2.50Available
Grok 4.202.0M$1.25$2.50Available
Grok 4.20 Multi-Agent2.0M$1.25$2.50Available
Grok 4.20 Multi-Agent Beta2.0M$1.25$2.50Available
Grok 4.20 Non-Reasoning2.0M$1.25$2.50Deprecating
Grok 4.20 Reasoning2.0M$1.25$2.50Deprecating
Grok 4.1 Reasoning2.0M$0.200$0.500Deprecated
Grok 4.1 Fast2.0M$5.00$25.00Deprecated

Model IDs

grok-4-5
grok-4.5
openrouter/x-ai/grok-4.5
perplexity/xai/grok-4.5
spacexai/grok-4.5
x-ai/grok-4.5
xai-grok-4-5
xai/grok-4.5
xai/grok-4.5-latest