SpaceXAI and Cursor Prepare to Launch First Jointly Developed AI Model This Week

SpaceXAI and Cursor are planning to introduce their first jointly developed AI model as early as Wednesday, according to an internal memo obtained by The Information.

The memo compares the new model to Anthropic's Opus 4.8 and OpenAI's GPT-5.5. It also notes that the launch was delayed earlier this week to improve the model's efficiency.

This marks the first major product under Elon Musk's new SpaceXAI name, which was announced Monday when Musk integrated xAI into SpaceX.

Neither SpaceXAI nor Cursor have publicly named the model. Cursor declined to comment, and SpaceXAI did not respond to a request for comment.

What SpaceXAI and Cursor Are Launching

According to the internal memo cited by The Information, SpaceXAI and Cursor plan to release the model as soon as Wednesday. The memo describes:

A jointly developed model designed to process information quickly

Competitive positioning against Anthropic's Opus 4.8 and OpenAI's GPT-5.5

A launch date that was pushed back earlier in the week to improve efficiency

The memo does not name the model. Musk has previously referred to an unreleased Grok model in beta. Cursor also operates its own coding model called Composer. Whether the joint model uses one of those names or an entirely new brand has not been disclosed.

The joint launch reflects months of collaboration between the two companies. Musk stated last month that SpaceX and Tesla staff had tested the joint model.

Cursor Chief Executive Michael Truell told customers his firm had trained a model from scratch on Colossus, xAI's supercomputer. Truell said the model would take on Anthropic and OpenAI directly.

The two companies are also in the process of a $60 billion all-stock acquisition, with SpaceX purchasing Cursor. The deal was previously announced but has not yet closed.

The SpaceXAI Rebrand, Investment, and Competitive Context

The launch marks the first major product release under the new SpaceXAI name. Musk announced on Monday that xAI would be integra…