SpaceXAI's Grok 4.6 Matches GPT-5.6 Sol Intelligence

SpaceXAI has released Grok 4.6, a new AI model that claims to have intelligence comparable to OpenAI's GPT-5.6 Sol and Anthropic's Claude Fable 5. Grok 4.6 has achieved a score of 61 on the Artificial Analysis Intelligence Index, surpassing Kimi K3 and tying with GPT-5.6 Sol.

Grok 4.6 has a focus on long-running agents, coding, and knowledge work, and is available through various platforms, including Cursor, Grok Build, the SpaceXAI API, OpenRouter, Vercel, and Cloudflare. The model underwent a longer supplemental training run than its predecessor, Grok 4.5, with curated model-generated data for reasoning and advanced technical concepts.

The pricing for Grok 4.6 starts at $2 per million input tokens and $6 per million output tokens. This is significantly lower than the pricing for Claude Opus 5 and GPT-5.6 Sol, making Grok 4.6 a more affordable option for users. Grok 4.6 also has a context window of 500k tokens and achieves a GDPval-AA v2 Elo of 1753.

## What it means The release of Grok 4.6 is significant, as it brings SpaceXAI back to the intelligence frontier alongside OpenAI and Anthropic. The model's ability to stay on task across many steps, work through unfamiliar codebases, and test its own output before moving forward makes it a powerful tool for knowledge work and coding.

## Why it matters The development of Grok 4.6 is a notable achievement in the field of artificial intelligence, as it demonstrates the ability to create models that can perform complex tasks at a lower cost than existing solutions. This has significant implications for industries such as software development, research, and education, where AI models can be used to automate tasks and improve productivity.

Grok 4.6 has also achieved strong performance on various benchmarks, including 𝜏³-Banking and Terminal-Bench v2.1, with scores of 50.7% and 88.4%, respectively. This demonstrates the model's ability to perform well on a range of tasks, from coding and knowledge work to more ambitious visual projects.

## What happens next The release of Grok 4.6 is likely to have a significant impact on the AI landscape, as it provides a more affordable and powerful alternative to existing models. As the model becomes more widely available, it will be interesting to see how it is used in various industries and applications, and how it compares to other models in terms of performance and cost.