Grok 4.6

xAI's frontier-tier model with a 500k token context window, released after Grok 4.5.

Strengths

Handles advanced reasoning across coding, knowledge work, and STEM domains with frontier performance.

Best for

Complex multi-step problems in engineering, mathematics, scientific analysis, and large codebase comprehension where frontier reasoning capability is needed.

Limitations

As a newer frontier model, it has not yet been evaluated as extensively in production as earlier xAI releases, and its 500k context window is smaller than Grok 4.3's 1M token context.