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xAI: Grok 4.6
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xAI: Grok 4.6

xAI's frontier model tuned for long-running agents, solving complex tasks in far fewer turns and tokens.

Context window: 
1
M tokens
Output: 
450000
 tokens
Modality:
Text
Image
Video
PDF
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Grok 4.6: Frontier Agentic Work at Fewer Turns per Task

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Grok 4.6 is xAI's current frontier model, built on the same foundation as Grok 4.5 with a longer supplemental training run focused on long-running agents, coding, and knowledge work. It sits at the top of the Grok lineup as a reasoning-capable agentic model with text and image input, text output, a 500K-token context window, and four reasoning-effort levels. Its distinguishing trait is task efficiency: independent testing shows it resolves long-horizon agent tasks in roughly half the turns of comparable frontier models. Long-running coding and knowledge-work agents benefit most.

Integrate Grok 4.6 via the AnyAPI.ai API

Sample code for 

xAI: Grok 4.6

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Frequently
Asked
Questions

Answers to common questions about integrating and using this AI model via AnyAPI.ai

Grok 4.6 has a 500,000-token context window, unchanged from Grok 4.5. Note that when a prompt reaches 200,000 input tokens, xAI applies long-context pricing to the entire request, not just the tokens above the threshold. It is also the smallest context window among current frontier models, several of which reach 1M or more.

Yes. Grok 4.6 supports four reasoning-effort levels: low, medium, high (the default), and xhigh. The xhigh level is new to 4.6; Grok 4.5 accepted the parameter but silently downgraded it to high. Higher effort improves quality on hard tasks but increases response time and output tokens.

Grok 4.6 improves on non-agentic coding over Grok 4.5, but on pure autonomous software-engineering evals like DeepSWE and Terminal-Bench v3.0 it trails GPT-5.6 Sol Max, and early independent listings show a specific regression in multi-step agentic coding. Its coding value lies in efficient agent loops within a harness, not benchmark leadership on autonomous SWE.

Grok 4.6 accepts text and image input and produces text output only. It can understand and reason over images but does not generate them — image generation is a separate xAI service. There is no audio or video input on the grok-4.6 API model.

Grok 4.6 improves on Grok 4.5 across every benchmark xAI reports, with the biggest gains in agentic work, and shares the same 500K context and headline token pricing. However, its time-to-first-token regressed substantially, it emits more output tokens per task, and its cached-input rate rose, so effective cost per task can increase. Benchmark your own workload before upgrading.