June 28, 2026

Grok 4.5 enters private beta at SpaceX and Tesla, shows strong performance

SpaceX and Tesla have launched Grok 4.5, an AI model developed from the 1.5T V9 foundation, which is currently in private beta testing at both companies. Early evaluations suggest its performance may be comparable to or even exceed that of Opus. This model incorporates Cursor data in its supplemental training, and improvements are continually being made through RL advancements. Furthermore, SpaceX plans to introduce entirely new AI models every month throughout the year, enhancing their ongoing development efforts in next-generation AI technology.

Tesla: Tesla is an electric vehicle, energy storage, and autonomous technology company that integrates cutting-edge software and AI systems. It is exploring AI advancements to enhance vehicle capabilities and operations. In this news, Tesla is participating in the private beta of Grok 4.5 alongside SpaceX.
SpaceX: SpaceX is a leading aerospace and space transportation company focused on developing reusable rockets and satellite systems. It is expanding into advanced technology applications including AI model deployment and testing. In this news, SpaceX is running Grok 4.5 in private beta and plans monthly releases of new models trained from scratch.
Grok 4.5: Grok 4.5 is an advanced AI model developed on a large-scale foundation architecture with supplemental training enhancements. It is designed for high performance in reasoning and general tasks. In this news, Grok 4.5 has entered private beta at SpaceX and Tesla with early evaluations indicating strong results.

{“AI Deployment”: “SpaceX and Tesla are testing the Grok 4.5 AI model, based on the V9 foundation, in private beta environments.”, “Development Pipeline”: “SpaceX plans to release new AI models from scratch every month throughout the year.”}

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