ModelDeprecated

Grok 4.3

xAIfamily · Grokdocs.x.ai/developers/models/grok-4.3

Grok 4.3 is a reasoning model from SpaceXAI. It accepts text and image inputs with text output, and is suited for agentic workflows, instruction-following tasks, and applications requiring high factual...

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data quality69

Updated 5 h ago · first seen 11 Sept 2026

model_01M294WVYPHW41N7354B8HSPD1

Overview

Identity

Identity block not returned by the API for this entity.

Openness

Openness not classified yet — no sourced evidence to place this model in the ontology.

Key facts

Release date: Source:OpenRouter public model & pricing listingT2observed 12 h agomedium
Status: Source:Artificial AnalysisT2observed 10 h agomedium
Official page: docs.x.ai/developers/models/grok-4.3
Source:xAI — docsT1observed 10 h agohigh
API model id: Source:xAI — docsT1observed 10 h agohigh
Openrouter id: Source:OpenRouter public model & pricing listingT2observed 12 h agomedium

Architecture

Tokenizer: Source:OpenRouter public model & pricing listingT2observed 12 h agomedium

Capabilities

Modalities

Modalities: imagetext
Input: textimage
Output: text

Capabilities

Tool calling
Yes
OpenRouter public model & pricing listing · T2
Structured output
Yes
OpenRouter public model & pricing listing · T2
Reasoning
Yes
OpenRouter public model & pricing listing · T2
Vision
Yes
OpenRouter public model & pricing listing · T2
Audio
Unavailable
Fine-tuning available
Unavailable

Context window: Source:OpenRouter public model & pricing listingT2observed 12 h agomedium
Max output: Source:OpenRouter public model & pricing listingT2observed 12 h agomedium
Tokenizer: Source:OpenRouter public model & pricing listingT2observed 12 h agomedium

Benchmarks18

Compare with another model →

Comparable same task and conditions · Partially comparable same task, conditions differ (effort, temperature, judge) · Not comparable different variant or metric

No benchmark results recorded

Results appear when a tier 1–3 source publishes them; we never copy scores without a source.

Providers & Pricing3

All offers in the price terminal →

Current prices per 1M tokens
Provider	Input / 1M	Output / 1M	Cached in	Batch in / out	Context	Observed	Source
xAI APIx-ai/grok-4.3:batch	$1	$2	$0.16	—	1M	4 h ago	openrouter.aiT2
xAI APIgrok-4.3	$1.25	$2.5	$0.20	$1 / $2	1M	4 h ago	docs.x.aiT1
xAI APIx-ai/grok-4.3	$1.25	$2.5	$0.20	—	1M	4 h ago	openrouter.aiT2

USD per 1M tokens as published by each provider (USD). Rows are append-only: every change is kept in the history below.

Price history

Step lines per provider; amber markers are recorded changes. Click a marker or a row for the evidence behind that price.

Output price · USD / 1M tokens 1 provider

xAI API

xAI API$2 → $2.511 Sept 2026
xAI API$2.5 → $211 Sept 2026
xAI APIfirst observed $2.511 Sept 2026

Input price · USD / 1M tokens 1 provider

xAI API

xAI API$1 → $1.2511 Sept 2026
xAI API$1.25 → $111 Sept 2026
xAI APIfirst observed $1.2511 Sept 2026

Timeline23

Full timeline →

11 Sept 2026
Benchmark resultModelGrok 4.3xAI
Grok 4.3 scores 62.75% on LiveBench
livebench_leaderboard
livebench.ai
11 Sept 2026
Benchmark resultModelGrok 4.3xAI
Grok 4.3 scores 73.58% on LiveBench
livebench_leaderboard
livebench.ai
11 Sept 2026
Benchmark resultModelGrok 4.3xAI
Grok 4.3 scores 55.773% on LiveBench
livebench_leaderboard
livebench.ai
11 Sept 2026
Benchmark resultModelGrok 4.3xAI
Grok 4.3 scores 84.339% on LiveBench
livebench_leaderboard
livebench.ai
11 Sept 2026
Benchmark resultModelGrok 4.3xAI
Grok 4.3 scores 18.535% on LiveBench
livebench_leaderboard
livebench.ai
11 Sept 2026
Benchmark resultModelGrok 4.3xAI
Grok 4.3 scores 69.933% on LiveBench
livebench_leaderboard
livebench.ai
11 Sept 2026
Benchmark resultModelGrok 4.3xAI
Grok 4.3 scores 70.822% on LiveBench
livebench_leaderboard
livebench.ai
11 Sept 2026
Benchmark resultModelGrok 4.3xAI
Grok 4.3 scores 62.247% on LiveBench
livebench_leaderboard
livebench.ai
11 Sept 2026
Benchmark resultModelGrok 4.3xAI
Grok 4.3 scores 37.88% on Terminal-Bench
artificial_analysis
artificialanalysis.ai
11 Sept 2026
Benchmark resultModelGrok 4.3xAI
Grok 4.3 scores 39.7% on Terminal-Bench
artificial_analysis
artificialanalysis.ai
11 Sept 2026
Benchmark resultModelGrok 4.3xAI
Grok 4.3 scores 0% on Terminal-Bench
artificial_analysis
artificialanalysis.ai
11 Sept 2026
Benchmark resultModelGrok 4.3xAI
Grok 4.3 scores 97.66% on τ²-bench
artificial_analysis
artificialanalysis.ai
11 Sept 2026
Benchmark resultModelGrok 4.3xAI
Grok 4.3 scores 78.09% on MMMU-Pro
artificial_analysis
artificialanalysis.ai
11 Sept 2026
Benchmark resultModelGrok 4.3xAI
Grok 4.3 scores 81.29% on IFBench
artificial_analysis
artificialanalysis.ai
11 Sept 2026
Benchmark resultModelGrok 4.3xAI
Grok 4.3 scores 48.26% on SciCode
artificial_analysis
artificialanalysis.ai
11 Sept 2026
Benchmark resultModelGrok 4.3xAI
Grok 4.3 scores 37.21% on Humanity's Last Exam
artificial_analysis
artificialanalysis.ai
11 Sept 2026
Benchmark resultModelGrok 4.3xAI
Grok 4.3 scores 90.1% on GPQA
artificial_analysis
artificialanalysis.ai
11 Sept 2026
Benchmark resultModelGrok 4.3xAI
Grok 4.3 scores 25.39 on Artificial Analysis Intelligence Index
artificial_analysis
artificialanalysis.ai
11 Sept 2026
Listed by providerModelGrok 4.3xAI
xAI API lists Grok 4.3 at $1.25 in / $2.5 out per 1M tokens
xai
docs.x.ai
11 Sept 2026
Property changedModelGrok 4.3xAI
Grok 4.3: modalities input changed from ["image", "text"] to ["text", "image"]
Input modalitiesimage, text→text, imagexai
docs.x.ai
30 Apr 2026
New modelModelGrok 4.3xAI
New model: Grok 4.3 (xAI)
openrouter
openrouter.ai
11 Sept 2026
Listed by providerModelGrok 4.3xAI
xAI API lists Grok 4.3 at $1 in / $2 out per 1M tokens
openrouter
openrouter.ai
11 Sept 2026
Listed by providerModelGrok 4.3xAI
xAI API lists Grok 4.3 at $1.25 in / $2.5 out per 1M tokens
openrouter
openrouter.ai

Change history25

Temporal, append-only claims: a new observation closes the previous claim instead of overwriting it. Rewind the record with the as-of picker.

Viewing AI Atlas as of 12 Sept 2026 — attributes exactly as the atlas knew them on that day; later corrections are not shown.

Back to today →

Attributes as of 12 Sept 2026 28 claims in force

Family: Grok
Release date: 30 Apr 2026
Status: deprecated
Openness: proprietary
Context window: 1M tokens
Max output: 900K tokens
Modalities: image, text
Input modalities: text, image
Output modalities: text
Tokenizer: Grok
API model id: grok-4.3
Official page: docs.x.ai/developers/models/grok-4.3
Aa context window: 1,000,000
Aa openness: proprietary
Batch api: Yes
File input: Yes
Aa median output tokens per second: 119.4
Openrouter id: x-ai/grok-4.3
Openrouter listed at: 30 Apr 2026
Reasoning: Yes
Reasoning effort options: none, low, medium, high, xhigh
Regions: eu-west-1, us-east-1, us-west-2
Structured output: Yes
Supported parameters: include_reasoning, logprobs, max_tokens, reasoning, reasoning_effort, response_format, seed, structured_outputs, temperature, tool_choice, tools, top_logprobs, top_p
Tool calling: Yes
Vision: Yes
Weights available: No

25 claims · 24 properties

Familyfamily1

Claim history for Family
Value	Valid from → to	Status	Source	Confidence	Extractor
Grok	11 Sept 2026 22:37 UTC → current	current	xAI — docsT1	high	deterministic

Release daterelease_date1

Claim history for Release date
Value	Valid from → to	Status	Source	Confidence	Extractor
30 Apr 2026	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Statusstatus1

Claim history for Status
Value	Valid from → to	Status	Source	Confidence	Extractor
deprecated	11 Sept 2026 22:42 UTC → current	current	Artificial AnalysisT2	medium	deterministic

Opennessopenness1

Claim history for Openness
Value	Valid from → to	Status	Source	Confidence	Extractor
proprietary	11 Sept 2026 22:42 UTC → current	current	Artificial AnalysisT2	medium	deterministic

Context windowcontext_length1

Claim history for Context window
Value	Valid from → to	Status	Source	Confidence	Extractor
1M tokens	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Max outputmax_output_tokens1

Claim history for Max output
Value	Valid from → to	Status	Source	Confidence	Extractor
900K tokens	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Modalitiesmodalities1

Claim history for Modalities
Value	Valid from → to	Status	Source	Confidence	Extractor
image, text	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Input modalitiesmodalities_input2

Claim history for Input modalities
Value	Valid from → to	Status	Source	Confidence	Extractor
text, image	11 Sept 2026 22:37 UTC → current	current	xAI — docsT1	high	deterministic
image, text	11 Sept 2026 21:10 UTC → 11 Sept 2026 22:37 UTC	superseded	OpenRouter public model & pricing listingT2	medium	deterministic

Output modalitiesmodalities_output1

Claim history for Output modalities
Value	Valid from → to	Status	Source	Confidence	Extractor
text	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Tokenizertokenizer1

Claim history for Tokenizer
Value	Valid from → to	Status	Source	Confidence	Extractor
Grok	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

API model idapi_model_id1

Claim history for API model id
Value	Valid from → to	Status	Source	Confidence	Extractor
grok-4.3	11 Sept 2026 22:37 UTC → current	current	xAI — docsT1	high	deterministic

Official pageofficial_url1

Claim history for Official page
Value	Valid from → to	Status	Source	Confidence	Extractor
https://docs.x.ai/developers/models/grok-4.3	11 Sept 2026 22:37 UTC → current	current	xAI — docsT1	high	deterministic

Batch apibatch_api1

Claim history for Batch api
Value	Valid from → to	Status	Source	Confidence	Extractor
Yes	11 Sept 2026 22:37 UTC → current	current	xAI — docsT1	high	deterministic

Descriptiondescription1

Claim history for Description
Value	Valid from → to	Status	Source	Confidence	Extractor
Grok 4.3 is a reasoning model from SpaceXAI. It accepts text and image inputs with text output, and is suited for agentic workflows, instruction-following tasks, and applications requiring high factual...	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

File inputfile_input1

Claim history for File input
Value	Valid from → to	Status	Source	Confidence	Extractor
Yes	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Aa median output tokens per secondmetric.aa_median_output_tokens_per_second1

Claim history for Aa median output tokens per second
Value	Valid from → to	Status	Source	Confidence	Extractor
119.4	11 Sept 2026 22:42 UTC → current	current	Artificial AnalysisT2	medium	deterministic

Openrouter idopenrouter_id1

Claim history for Openrouter id
Value	Valid from → to	Status	Source	Confidence	Extractor
x-ai/grok-4.3	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Reasoningreasoning1

Claim history for Reasoning
Value	Valid from → to	Status	Source	Confidence	Extractor
Yes	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Reasoning effort optionsreasoning_effort_options1

Claim history for Reasoning effort options
Value	Valid from → to	Status	Source	Confidence	Extractor
none, low, medium, high, xhigh	11 Sept 2026 22:37 UTC → current	current	xAI — docsT1	high	deterministic

Regionsregions1

Claim history for Regions
Value	Valid from → to	Status	Source	Confidence	Extractor
eu-west-1, us-east-1, us-west-2	11 Sept 2026 22:37 UTC → current	current	xAI — docsT1	high	deterministic

Structured outputstructured_output1

Claim history for Structured output
Value	Valid from → to	Status	Source	Confidence	Extractor
Yes	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Supported parameterssupported_parameters1

Claim history for Supported parameters
Value	Valid from → to	Status	Source	Confidence	Extractor
include_reasoning, logprobs, max_tokens, reasoning, reasoning_effort, response_format, seed, structured_outputs, temperature, tool_choice, tools, top_logprobs, top_p	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Tool callingtool_calling1

Claim history for Tool calling
Value	Valid from → to	Status	Source	Confidence	Extractor
Yes	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Visionvision1

Claim history for Vision
Value	Valid from → to	Status	Source	Confidence	Extractor
Yes	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Claims are temporal and append-only: a new observation closes the previous claim (valid_to) instead of overwriting it. Conflicting claims from different sources are kept side by side and flagged — never averaged. Methodology →

Provenance

Attributed facts

Source tiers

T1T27 / 18

Freshest observation

5 h ago

Conflicts

2 flagged

Source documents 5

Source documents
Source	Document	Type	Tier	Last observed	Snapshots
xAI — docs	docs.x.ai/developers/models/grok-4.3.md	model_page	T1· Official	4 h ago	1
xAI — docs	docs.x.ai/developers/models	model_docs	T1· Official	4 h ago	5
OpenRouter public model & pricing listing	openrouter.ai/api/v1/models	catalogue	T2· Quality secondary	4 h ago	6
LiveBench	livebench.ai/table_2026_06_25.csv	leaderboard	T2· Quality secondary	10 h ago	1
Artificial Analysis	artificialanalysis.ai/leaderboards/models	leaderboard	T2· Quality secondary	10 h ago	1

Tier 1 = official/primary, 2 = quality secondary, 3 = community, 4 = unverified. Every snapshot is archived; see all sources and the methodology.

Data quality (69/100) measures how well AI Atlas knows this entity — completeness, primary-source ratio, freshness, conflicts — never how good the model is. Methodology →