SpaceXAI launches Grok 4.5 model for coding, agentic tasks

• Grok 4.5 is priced competitively at $2 per million input tokens and $6 per million output tokens, significantly cheaper than Anthropic's Claude Opus 4.8 ($5/$25) and matching OpenAI's GPT-5.6 Luna output pricing
• SpaceX acquired Anysphere (maker of Cursor) last month to strengthen its position in the enterprise AI tools market, and Cursor is now partnering to integrate Grok 4.5
• Musk described Grok 4.5 as an 'Opus-class model' that is faster, more token-efficient and lower cost than competitors, with EU availability expected mid-July

Summary

SpaceXAI launched its Grok 4.5 AI model on Wednesday, July 8, positioning it as the company's most advanced offering for coding and agentic tasks. The model was trained on tens of thousands of Nvidia GB300 graphics processing units with emphasis on data filtering and quality scoring.

Key Developments:

• Grok 4.5 is immediately available through SpaceXAI's coding agent Grok Build, popular AI coding platform Cursor, and the company's developer portal via API
• EU availability expected mid-July
• Pricing set at $2 per million input tokens and $6 per million output tokens
• SpaceX CEO Elon Musk described it as "Opus-class" but faster and more cost-efficient

Strategic Context:

SpaceX announced last month it would acquire Anysphere, Cursor's parent company, to strengthen its position in the enterprise AI tools market. The acquisition of xAI by SpaceX occurred in February, with xAI ceasing independent operations in May to become SpaceXAI.

Competitive Landscape:

Grok 4.5 undercuts competitor pricing significantly. Anthropic's Claude Opus 4.8 costs $5/$25 per million input/output tokens, while OpenAI's GPT-5.6 Luna matches Grok's $6 output pricing but offers lower input costs at $1. OpenAI launched GPT-5.6 on Thursday following delays due to U.S. government national security concerns.

Market Implications:

The aggressive pricing strategy signals intensifying competition in the enterprise AI coding market. SpaceXAI's integration of hardware (Nvidia chips), software (Grok models), and distribution channels (Cursor acquisition) creates a vertically integrated approach to capturing market share in the rapidly growing AI development tools sector.