SpaceXAI: Grok 4.6

Grok 4.6 is a text generation model from xAI, listed on api14 as SpaceXAI: Grok 4.6 under the model id x-ai/grok-4.6. The provider describes it as delivering frontier performance on coding, knowledge work, and STEM tasks. It was released by the provider on 2026-08-12 and has since been succeeded by Grok 4.7, so it sits one step behind the newest Grok generation while remaining available through the gateway.

The model accepts text, images, and files as input, and produces text as output, which makes it a multimodal reader paired with a text-only writer. Its context window is 500,000 tokens, and the maximum output it can generate in a single request is 450,000 tokens. That combination suits workloads where a large amount of source material (documents, codebases, image-and-text bundles) needs to be considered at once and answered with a long, detailed response rather than a short reply.

The practical uses follow directly from those capabilities. Coding assistance, including reading whole repositories or large diffs alongside explanations in prose, is one fit. Knowledge work such as summarising long reports, extracting structured data from mixed text and file inputs, and answering questions over a broad document set is another. STEM reasoning tasks benefit from the wide context and long output, since worked solutions and multi-step derivations take space. Because images can be supplied as input, prompts can combine screenshots, diagrams, or scanned pages with accompanying text.

You call the model through api14's OpenAI-compatible API using the model id x-ai/grok-4.6, in the same way as any other chat completion request on the gateway. The supported request parameters are include_reasoning, logprobs, max_tokens, reasoning, reasoning_effort, response_format, seed, stop, structured_outputs, temperature, tool_choice, tools, top_k, top_logprobs, and top_p. These cover sampling controls, deterministic seeds, stop sequences, log probability inspection, structured and JSON-style output formats via response_format and structured_outputs, and tool or function calling through tools and tool_choice. Reasoning behaviour can be tuned with the reasoning, reasoning_effort, and include_reasoning parameters.

One consideration is that Grok 4.6 has been succeeded by Grok 4.7. If you want the newest Grok generation from the same provider, Grok 4.7 is the natural comparison point, and the two can be evaluated against each other on your own workload before you commit. Otherwise, the 500,000 token context, 450,000 token output ceiling, and multimodal input support make Grok 4.6 a reasonable choice for long-context, long-output work.