Grok 4.3

Tool callingStructured outputReasoningImage inputFile input

Website

xAI's default Grok for chat, coding, agentic tools, and lower hallucination risk

Context: 1M
Released: 6mo ago
Input / 1M tokens: $1.25
Output / 1M tokens: $2.50
Cached input / 1M tokens: $0.20

Sources:models.devOpenRouter

Benchmarks

DeepSWE is the primary coding benchmark where an exact model evaluation exists. Other sourced evaluations appear below; missing scores are not zero.

Not evaluated in DeepSWE 1.1 as of 2026-09-22. Results are only shown for exact model versions in the official dataset. Official leaderboard.

Other published benchmarks

Evaluation	Reported score and source
FrontierMath-Tier-4-v2-Private	14.6% Epoch AI · grok-4.3_high Reasoning effort: high Epoch AI evaluation
FrontierMath-Tiers-1-3-v2-Private	42.8% Epoch AI · grok-4.3_high Reasoning effort: high Epoch AI evaluation
GPQA diamond	88.8% Epoch AI · grok-4.3_high Reasoning effort: high Epoch AI evaluation
OTIS Mock AIME 2024-2025	93.3% Epoch AI · grok-4.3_high Reasoning effort: high Epoch AI evaluation
SimpleQA Verified	33.2% Epoch AI · grok-4.3_high Reasoning effort: high Epoch AI evaluation

Benchmark compilation: Epoch AI, Capabilities & benchmarking (CC BY attribution). Scores are converted to percentages and model names matched to the Vertical Tabs catalog. Individual evaluations are credited to their original sources. External results may carry separate licences and evaluation configurations; do not interpret scores from different harnesses as directly comparable.

Specifications

Developer: xAI
Model family: Grok
Type: Language model
Predecessor: —
Successor: —
Released: April 17, 2026
Model ID: x-ai/grok-4.3
Openness: Closed
License: —
Input modalities: text, image, file
Output modalities: text
Modality: text+image+file->text
Tokenizer: Grok
Max output tokens: 900K
Hugging Face: —
Source freshness: Metadata synced Oct 8, 2026, 10:17 PM UTC

Additional source evidence

Source model: xai/grok-4.3
Source family: grok
Last updated: 2026-04-17
Model context: 1M
Model output limit: 30K
Open weights: No
File attachments: Yes
Reasoning: Yes
Tool calling: Yes
Structured output: Yes
Temperature control: Yes

Published benchmarks

Benchmark	Score	Evaluation details	Evidence
Artificial Analysis Intelligence Index	53 · index score	4.0 · 2026-04-30	Source
GDPval-AA	1500 · Elo	2026-04-30	Source
τ²-Bench Telecom	98 · success rate	2026-04-30	Source
IFBench	81 · accuracy	2026-04-30	Source

Complete source record (JSON)

{
  "id": "xai/grok-4.3",
  "name": "Grok 4.3",
  "description": "xAI's default Grok for chat, coding, agentic tools, and lower hallucination risk",
  "family": "grok",
  "last_updated": "2026-04-17",
  "attachment": true,
  "reasoning": true,
  "tool_call": true,
  "structured_output": true,
  "temperature": true,
  "modalities": {
    "input": [
      "text",
      "image",
      "pdf"
    ],
    "output": [
      "text"
    ]
  },
  "limit": {
    "context": 1000000,
    "output": 30000
  },
  "benchmarks": [
    {
      "name": "Artificial Analysis Intelligence Index",
      "score": 53,
      "source": "https://artificialanalysis.ai/articles/xai-launches-grok-4-3-with-improved-agentic-performance-and-lower-pricing",
      "metric": "index score",
      "version": "4.0",
      "date": "2026-04-30"
    },
    {
      "name": "GDPval-AA",
      "score": 1500,
      "source": "https://artificialanalysis.ai/articles/xai-launches-grok-4-3-with-improved-agentic-performance-and-lower-pricing",
      "metric": "Elo",
      "date": "2026-04-30"
    },
    {
      "name": "τ²-Bench Telecom",
      "score": 98,
      "source": "https://artificialanalysis.ai/articles/xai-launches-grok-4-3-with-improved-agentic-performance-and-lower-pricing",
      "metric": "success rate",
      "date": "2026-04-30"
    },
    {
      "name": "IFBench",
      "score": 81,
      "source": "https://artificialanalysis.ai/articles/xai-launches-grok-4-3-with-improved-agentic-performance-and-lower-pricing",
      "metric": "accuracy",
      "date": "2026-04-30"
    }
  ],
  "release_date": "2026-04-17",
  "open_weights": false
}

Infrastructure

Provider availability

All providers

Provider	Endpoint	Context	Input /M tokens	Output /M tokens	Cached input /M tokens	Cache write /M tokens	Uptime 1d	Data handling
xAI	xai/zdr	1M	$1.25	$2.50	$0.20	—	93.87%	ZDR: Yes Training: Unknown Prompt logging: Unknown Retention: Unknown ZDR source Privacy policy Checked 2026-10-15
xAI	xai	1M	$1.25	$2.50	$0.20	—	97.85%	ZDR: No Training: Unknown Prompt logging: Unknown Retention: Unknown ZDR source Privacy policy Checked 2026-10-15
xAI	xai/zdrBatch pricing	1M	$1.25	$2.50	$0.20	—	93.87%	ZDR: No Training: Unknown Prompt logging: Unknown Retention: Unknown ZDR source Privacy policy Checked 2026-10-15
xAI	xaiBatch pricing	1M	$1.25	$2.50	$0.20	—	97.85%	ZDR: No Training: Unknown Prompt logging: Unknown Retention: Unknown ZDR source Privacy policy Checked 2026-10-15
xAI	xai/zdr/priority	1M	$2.50	$5.00	$0.40	—	100.00%	ZDR: Yes Training: Unknown Prompt logging: Unknown Retention: Unknown ZDR source Privacy policy Checked 2026-10-15
xAI	xai/priority	1M	$2.50	$5.00	$0.40	—	100.00%	ZDR: No Training: Unknown Prompt logging: Unknown Retention: Unknown ZDR source Privacy policy Checked 2026-10-15
xAI	xai/zdr/priorityBatch pricing	1M	$2.50	$5.00	$0.40	—	100.00%	ZDR: No Training: Unknown Prompt logging: Unknown Retention: Unknown ZDR source Privacy policy Checked 2026-10-15
xAI	xai/priorityBatch pricing	1M	$2.50	$5.00	$0.40	—	100.00%	ZDR: No Training: Unknown Prompt logging: Unknown Retention: Unknown ZDR source Privacy policy Checked 2026-10-15

Provider data:OpenRouter