Migrating from grok-3 to grok-4.3

What changes when you move from grok-3 to grok-4.3: prices, limits, features and parameters, read from each company's own pages.

From: grok-3
Status: Retired
Shutdown: May 15, 2026
Time left: —

To: grok-4.3
Status: Active
Shutdown: none announced
Time left: —

Prices

USD per 1M tokens, standard tier

Type	grok-3	grok-4.3	Change
Input	Not published	$1.25first seen October 5, 2026 · source	—
Cached input	Not published	$0.20first seen October 5, 2026 · source	—
Output	Not published	$2.50first seen October 5, 2026 · source	—

Other tiers, prompt-size bands and modalities are on each model's page.

Limits

Tokens

Neither company publishes a context window or output limit for these models.

Benchmarks

Same benchmark and source on both sides; settings named where they differ

Benchmark	grok-3	grok-4.3	Change
GPQA DiamondEpoch AI, high effort (vs no setting).	75.8%	88.8%	+13.0 pts
OTIS Mock AIME 2024-2025Epoch AI, high effort (vs no setting).	55.6%	93.3%	+37.7 pts

A score from one source is never compared with another source's, and company-reported scores are compared only within the same company; settings named where they differ. Data: Epoch AI, Capabilities & benchmarking (epoch.ai/benchmarks), CC BY.

Features and parameters

Compare models

Neither company publishes feature facts for these models.

Aliases

All aliases

No aliases point at either model.

On cloud platforms

All platform dates

Model	Platform	Platform ID	Shutdown	Time left
grok-3	Microsoft Foundryversion 1	grok-3	May 1, 2026Retired on May 1, 2026
grok-4.3	Amazon Bedrock	xai.grok-4.3	not before Jun 15, 2027Active

Read daily from each platform's own pages. The status above uses each company's own date. Time left counts to 00:00 UTC on the shutdown date, which is the evening before in ET.

Checklist

Change the model string from grok-3 to grok-4.3.

Compared from AIWire's published data when this page loaded. Each fact links to the page it came from. Model pages: grok-3, grok-4.3.