SpaceXAI’s newest AI model Grok 4.5 dramatically undercuts Anthropic and OpenAI on price

2026-07-08 · Source: AI – SiliconANGLE · Field: Technology & Digital — Artificial Intelligence & Machine Learning · Depth: Intermediate, quick

Summary

SpaceXAI Corp. released its new AI model, Grok 4.5, on July 08 2026, marking its first major launch since going public. Grok 4.5 is positioned as a versatile workhorse capable of handling tasks like coding, writing, presentations, and research. Its primary differentiator is cost efficiency, offering "twice greater token efficiency" than competitors. SpaceXAI states Grok 4.5 costs \$2 per 1 million input tokens and \$6 per 1 million output tokens, significantly undercutting models like Anthropic's Opus 4.7/4.8 (\$5 input, \$25 output) and Fable 5 (\$10 input, \$50 output), as well as OpenAI's GPT-5.6 Sol (\$5 input, \$30 output). While benchmark results show Grok 4.5 falls just short of leading models, founder Elon Musk claims it is "roughly comparable" to Opus 4.7 in performance but much faster. This launch coincides with OpenAI's release of GPT-5.6 Sol and GPT-Live.

Key takeaway

For AI Product Managers evaluating large language models for deployment, Grok 4.5 presents a compelling cost-performance trade-off. If your applications involve high token volumes for tasks like coding or content generation, its \$2 input and \$6 output per 1 million tokens, combined with "twice greater token efficiency," could significantly reduce operational expenses compared to higher-priced alternatives. You should benchmark Grok 4.5 against your current models to assess if its comparable performance and faster generation speed meet your specific needs while optimizing budget.

Key insights

Grok 4.5 offers competitive AI capabilities at half the cost due to superior token efficiency.

Principles

• Token efficiency directly impacts AI model operational costs.
• Faster generation speed can offset slight performance gaps.

In practice

• Evaluate Grok 4.5 for cost-sensitive AI automation tasks.
• Compare token efficiency metrics when selecting LLMs.

Topics

• Grok 4.5
• AI Model Pricing
• Token Efficiency
• Large Language Models
• SpaceXAI
• Anthropic Opus

Best for: CTO, VP of Engineering/Data, Machine Learning Engineer, Director of AI/ML, AI Product Manager, AI Engineer

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• Oh no (the new Grok model is good) — Grok 4.5 offers near-frontier intelligence for coding and agentic tasks at a significantly lower cost and higher token efficiency.
• SpaceX's Grok 4.5 launches at half the price of rivals — here's why that could rattle Anthropic and OpenAI — SpaceX's Grok 4.5 disrupts the AI coding market by prioritizing cost-efficiency and speed over raw benchmark dominance.
• SpaceXAI releases Grok 4.5, which Elon describes as an ‘Opus-class model’ — Grok 4.5 delivers Opus-class capabilities with significantly improved token efficiency and lower operational costs, challenging market leaders.
• SpaceXAI, Cursor release the strongest Grok yet — Grok 4.5 re-establishes Grok as a competitive frontier model with high performance, speed, and cost efficiency.

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Editorial summary, takeaway, and curation by AIssential. Original article published by AI – SiliconANGLE.