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Grok 4.20


Grok 4.20 is xAI logoxAI's language model with a 2.0M context window, available from 3 providers, starting at $1.25 / 1M input and $2.50 / 1M output. xAI's flagship LLM combining industry-leading speed, agentic tool calling, and low hallucination rates for enterprise and research applications.
Spec
Canonical IDxai-grok-4-20
TypeLanguage
StatusActive
CreatorxAIxAI
Providers
Context Window2.0M tokens
Input ModalitiesImageText
Output ModalitiesText
Reasoning Effortsdefault
Release Date · 1 month ago
Knowledge Cutoff
Intelligence Index
48.5
#24
Coding Index
40.5
#37
GPQA
0.9
#18
HLE
0.3
#19
IFBench
0.8
#2
Time to First Token
27.27s
#457
SciCode
0.4
#36
LCR
0.6
#96
TerminalBench Hard
0.4
#38
TAU2
0.9
#34
Output TPS
84.4
#143

Capabilities

Input2/5
Text
Image
Audio·
Video·
PDF·
Output1/5
Text
Image·
Audio·
Video·
Embedding·
Capabilities4/13
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-4.20
$1.25$2.50$0.200$0.0050
xAI logo
xAI
grok-4.20-0309
$1.25$2.50$0.200N/A$0.625$1.25$0.100
Oracle Cloud (OCI) logo
Oracle Cloud (OCI)
oci/xai.grok-4.20
$3.00$15.00N/AN/A

Cost Calculator

Preset:
Compares every provider & tier in USD

Versions

VersionReleasedContextInput / 1MOutput / 1MStatus
Grok 4.31.0M$1.25$2.50Available
Grok 4.202.0M$1.25$2.50Current
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$0.500Deprecating
Grok 4 Fast2.0M$0.200$0.500Deprecating
Grok 4 Fast Non-Reasoning2.0M$0.200$0.500Available
Grok 4256K$3.00$15.00Deprecating
Grok 4 Reasoning2.0M$0.200$0.500Available

Model IDs