When was Grok 4.1 released?

Grok 4.1 was released by SpaceXAI on Monday, Nov 17 2025.

Grok 4.1 was built by SpaceXAI. Elon Musk's AI company building the Grok series of models. Founded in 2023 as xAI, now part of SpaceX. Cursor (Anysphere) and its Composer coding models were acquired in 2026 and are tracked here.

Is Grok 4.1 open source?

No. Grok 4.1 is a proprietary model. The weights are not published — it is available only through the provider's own API, apps, or partner platforms.

What came before and after Grok 4.1?

SpaceXAI's previous tracked release was Composer on Oct 29 2025, 19 days earlier. It was followed by Grok 4.1 Fast on Nov 19 2025.

Grok 4.1

Released Nov 17 2025

Grok 4.1 is an AI model released by SpaceXAI on Monday, Nov 17 2025, 19 days after Composer.

Compare Grok 4.1 with

Grok 4.1

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Frequently asked questions

: Grok 4.1 was released by SpaceXAI on Monday, Nov 17 2025.
: Grok 4.1 was built by SpaceXAI. Elon Musk's AI company building the Grok series of models. Founded in 2023 as xAI, now part of SpaceX. Cursor (Anysphere) and its Composer coding models were acquired in 2026 and are tracked here.
: No. Grok 4.1 is a proprietary model. The weights are not published — it is available only through the provider's own API, apps, or partner platforms.
: SpaceXAI's previous tracked release was Composer on Oct 29 2025, 19 days earlier. It was followed by Grok 4.1 Fast on Nov 19 2025.