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Model registry / xAI / Grok / Grok 4.3

Grok 4.3

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

Line

Grok

Weights

API only

Released

2026-04-17

Context

1M

Input

$1.25 / 1M

Output

$2.50 / 1M

Max output

30K

Coverage

not covered yet

Overview

Grok 4.3 is xAI's model for chat, coding, agentic tools, and lower hallucination risk. It is part of the grok line, succeeding Grok 4.20 Multi-Agent. It has a context window of 1,000,000 tokens and a maximum output of 30,000 tokens. Pricing starts at $1.25 per million input tokens and $2.50 per million output tokens, with cached input at $0.20 per million tokens. The weights are not open. It accepts image, PDF, and text inputs, returns text, and supports reasoning mode and tool calling.

Specs

Released2026-04-17
LinexAI · Grok
WeightsAPI only
Context1M tokens
Max output30K tokens
Inputimage, pdf, text
Outputtext
ReasoningYes
Tool callingYes
Knowledge cutoffnot stated
API idgrok-4.3

Pricing

Input$1.25 / 1M tokens
Cached input$0.20 / 1M tokens
Output$2.50 / 1M tokens

Same headline figures as Grok 4.20 Multi-Agent.

Strengths

  • 1M token context window
  • 30k token max output
  • Accepts image, PDF, and text
  • Supports reasoning mode
  • Supports tool calling

Best for

  • Reach for it for chat and conversational AI
  • Reach for it for coding assistance
  • Reach for it for agentic tool workflows
  • Reach for it for tasks needing lower hallucination risk

How to access

ProviderModel id
302.AIgrok-4.3
AIHubMixgrok-4.3
Abacusgrok-4.3
AnyAPIgrok-4.3
Aurikogrok-4.3
Cloudflare AI Gatewaygrok-4.3
CrossModelgrok-4.3
DaoXEgrok-4.3
Eden AIgrok-4.3
FastRoutergrok-4.3
Impossiblgrok-4.3
Kilo Gatewaygrok-4.3

24 hosts serve this model at the price above · the maker's documentation

Grok: every version

VersionReleasedContextInput
Grok 4.7Current2026-09-21500K$1.60
Grok 4.62026-08-12500K$2.00
Grok 4.52026-07-08500K$2.00
Grok 4.32026-04-171M$1.25
Grok 4.20 (Non-Reasoning)2026-03-091M$1.25
Grok 4.20 Multi-Agent2026-03-091M$1.25

The registry keeps the six most recent versions of a line. Older ones stay in the file and can be surfaced without a rebuild.

FAQ

What is the context window?
The context window is 1,000,000 tokens.
What is the pricing?
Input from $1.25 per million tokens, output from $2.50 per million tokens, cached input from $0.20 per million tokens.
Does it support image input?
Yes, it accepts image, PDF, and text inputs.
ProprietaryReasoning1M context