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Grok 4.3


Grok 4.3 is xAI logoxAI's language model with a 1.0M context window, available from 3 providers, starting at $1.25 / 1M input and $2.50 / 1M output. A multimodal reasoning LLM from xAI that accepts text and image inputs, designed for agentic workflows, instruction-following, and tool-use tasks requiring high factual accuracy.
Spec
Canonical IDxai-grok-4-3
TypeLanguage
StatusActive
CreatorxAIxAI
Providers
Context Window1.0M tokens
Input ModalitiesImagePdfText
Output ModalitiesText
Reasoning Effortsdefault
Release Date · 3 days ago
Intelligence Index
Coding Index
41.0
#35
GPQA
0.9
#9
HLE
0.3
#12
IFBench
0.8
#1
Time to First Token
18.40s
#449
SciCode
0.5
#20
LCR
0.6
#57
TerminalBench Hard
0.4
#39
TAU2
1.0
#6
Output TPS

Capabilities

Input3/5
Text
Image
Audio·
Video·
PDF
Output1/5
Text
Image·
Audio·
Video·
Embedding·
Capabilities5/13
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
Web Search
$ / query
Input
$ / 1M
Output
$ / 1M
Cache Read
$ / 1M
OpenRouter logo
OpenRouter
x-ai/grok-4.3
$1.25$2.50$0.200$0.0050
Vercel AI Gateway logo
Vercel AI Gateway
xai/grok-4.3
$1.25$2.50$0.200N/A
xAI logo
xAI
grok-4.3-latest
$1.25$2.50$0.200N/A$0.625$1.25$0.100

Cost Calculator

Preset:
Compares every provider & tier in USD

Versions

VersionReleasedContextInput / 1MOutput / 1MStatus
Grok 4.31.0M$1.25$2.50Current
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$2.50Available
Grok 4.20 Reasoning2.0M$1.25$2.50Available
Grok 4.1 Fast2.0M$0.200$0.500Available
Grok 4 Fast2.0M$0.200$0.500Available
Grok 4 Fast Non-Reasoning2.0M$0.200$0.500Available
Grok 4256K$3.00$15.00Available
Grok 4 Reasoning2.0M$0.200$0.500Available

Model IDs