Models/xAI/Grok 4.3

Grok 4.3

Name: Grok 4.3 API access
Brand: xAI

xAI · Proprietary · Released Apr 30, 2026 · x-ai/grok-4.3

Compare Estimate cost

1M contextVisionToolsReasoningStructured outputPrompt caching

Available from 4 providersUSD / MTOK · VERIFIED 4 MINUTES AGO

EST. MONTHLY COSTclick a row for detail · click headers to sort

PROVIDER	INPUT	OUTPUT	CACHE	CONTEXT	QUANT	TTFT	TPS	UPTIME
xAIxai/zdr1ST PARTY	$1.25	$2.50	$0.20	1M	—	0.62s	184 tok/s	100.0%
xAIxai1ST PARTY	$1.25	$2.50	$0.20	1M	—	—	—	100.0%
xAIxai/zdr/priority1ST PARTY	$2.50	$5.00	$0.40	1M	—	—	—	100.0%
xAIxai/priority1ST PARTY	$2.50	$5.00	$0.40	1M	—	—	—	100.0%

TTFT/TPS: median (P50) over trailing 72h · chat10k profile (~10K in / 200 out) · measured via OpenRouter routing · methodology v1.1 · measured 43 hours ago

Pricing variants · USD / MTok in / out

STANDARD

$1.25 / $2.50

per MTok in / out

CACHE READ $0.20WEB SEARCH $0.005 / search

About

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...

Specifications

Context window1,000,000

Max output—

Modalities intext, image, file

Modalities outtext

LicenseProprietary

ReleasedApr 30, 2026

TokenizerGrok

Grok 4.6$2.00 / $6.00 Grok 4.5$2.00 / $6.00 Grok Build 0.1$1.00 / $2.00 Grok 4.20 Multi-Agent$1.25 / $2.50

Embed badge

[![Grok 4.3](https://modelindex.ai/badge/x-ai/grok-4.3)](https://modelindex.ai/models/x-ai/grok-4.3)

Sources

OpenRouter API4 minutes ago

AGGREGATOR

ModelIndex benchmarks43 hours ago

MEASURED

Verified 4 minutes ago · list prices, not negotiated rates.