SpaceXAI has officially introduced Grok 4.5, its most sophisticated and advanced model to date, engineered specifically to excel in complex coding, agentic workflows, and intensive knowledge work. Developed and trained alongside Cursor, the state-of-the-art model sets a new benchmark for real-world engineering excellence and efficiency in artificial intelligence.
Advanced Engineering and Technical Capabilities
Grok 4.5 was built on comprehensive datasets covering advanced coding, scientific research, sophisticated engineering, and high-level mathematics. Integrating intelligent reasoning with exceptional operational efficiency, the model handles intricate engineering challenges while outperforming numerous comparable leading models across standardized industry benchmarks.
The underlying architecture of Grok 4.5 was trained across tens of thousands of NVIDIA GB300 GPUs, incorporating advanced stability techniques tailored for massive-scale training runs. Going beyond raw token volume, SpaceXAI heavily prioritized data curation and filtering, focusing on robust deduplication, precision quality scoring, and domain-focused selection to ensure high-coverage and high-signal data mixtures.
Furthermore, reinforcement learning was scaled significantly with a core emphasis on per-token intelligence. Covering hundreds of thousands of specialized tasks, the reinforcement learning curriculum centers heavily on multi-step software engineering and complex technical workflows evaluated through automated and model-based grading systems. The underlying infrastructure enables highly asynchronous training, permitting agentic rollouts to persist for hours while continuous learning scales seamlessly across thousands of GPUs.
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Speed, Token Efficiency, and Accessibility
Operating at rapid speeds of 80 tokens per second (TPS), Grok 4.5 delivers high-speed results combined with double the token efficiency of competing models tackling identical tasks. This performance significantly drives down operational costs while optimizing response delivery times. For instance, on the SWE Bench Pro evaluation, Grok 4.5 resolves tasks utilizing an average of only 15,954 output tokens roughly 4.2 times fewer than alternative high-end solutions.
Expanding past software development, Grok 4.5 functions as the default model within Grok Build, empowering users to generate complex Excel spreadsheets incorporating multi-sheet formulas, web-based research, and detailed contextual notes. The model demonstrates equivalent precision across productivity suites, utilizing native PowerPoint shapes for intricate diagrams and generating comprehensive, well-structured prose in word processing applications.
Pricing and Availability
Grok 4.5 is available immediately at a highly competitive market rate of $2 per million input tokens and $6 per million output tokens. Due to its superior token efficiency, the model solves complex assignments in a fraction of the standard steps, delivering maximum intelligence per unit of time and cost.
Developers and enterprise clients can access Grok 4.5 starting via Grok Build, across all integration tiers in Cursor, and directly through the SpaceXAI developer console. For a limited time, complimentary usage of Grok 4.5 is available within Grok Build and Cursor environments.
