XAI · MODEL RELEASE TRACKER

Grok 4.3

Grok 4.3 is a version of xAI's Grok model family. When it became generally available, xAI joined Amazon Bedrock and the model was reachable through Bedrock Mantle.

UPDATED 2026-09-27

CURRENT SNAPSHOT1/5 DIMENSIONS WITH DATA

The dimensions that change the decision.

PRICING

Not established from the available sources.

CONTEXT WINDOW

Not established from the available sources.

MODALITIES

Not established from the available sources.

BENCHMARKS

Not established from the available sources.

AVAILABILITY

Availability on Amazon Bedrock (Mantle)When Grok 4.3 became generally available, it was reachable through Bedrock Mantle and xAI joined Amazon Bedrock as a model provider.2026-09-21

VERIFIABLE FACTS

Every value stays attached to a source and date.

RELEASE · General availabilityDEVELOPER CLAIM

Grok 4.3 became generally available (no release date provided in the source).

AVAILABILITY · Availability on Amazon Bedrock (Mantle)DEVELOPER CLAIM

When Grok 4.3 became generally available, it was reachable through Bedrock Mantle and xAI joined Amazon Bedrock as a model provider.

WHAT CHANGED

Stored passport versions, without reconstructed history.

2026-09-27Passport created2 facts

Grok 4.3 became generally available (no release date provided in the source).

When Grok 4.3 became generally available, it was reachable through Bedrock Mantle and xAI joined Amazon Bedrock as a model provider.

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