SpaceXAI: Grok 4.6

SpaceXAI: Grok 4.6, from vendor x-ai, accepts text, image, and file inputs and offers a 500,000-token context window with up to 450,000 completion tokens. It supports tool use and reasoning, which suits agentic workflows and multi-step tasks. The listing does not specify structured output support or whether weights are open, so teams that depend on schema-constrained responses or self-hosting should confirm those details before committing. At $2.00 per million input tokens and $6.00 per million output tokens, it is a paid model priced for workloads that make use of its long context and very large output allowance. Its blended benchmark score of 75.3 comes from a single independent benchmark, with an AI Index score of 73.1, so its standing is only partially evidenced. Shortlist it for long-document and tool-driven work, but test it on your own tasks before relying on that number.