Grok 4.6

Supported Functionality

Item	Specification
Input	Text, image
Output	Text
Context	500,000 tokens
Max Output	No separate text-output limit is specified by the provider
Vision	✓ Supported
Function Calling	✓ Supported

Description

Grok 4.6 is a flagship reasoning model released by SpaceXAI on August 12, 2026 under the API model code grok-4.6. Built for coding, agentic tasks, and knowledge work, it accepts text and image inputs, produces text, and offers a 500,000-token context window. The provider does not specify a separate text-output limit, and its knowledge cutoff is February 1, 2026.

The model emphasizes long-running agents, interactive projects, and visual development, allowing it to research, modify code, call tools, self-test, and iterate on feedback across extended trajectories. It supports function calling, structured output, and mandatory reasoning with low, medium, high, or xhigh reasoning_effort; the default is high. xAI server-side tools can also connect it to Web Search, X Search, code execution, and file retrieval.

Key Capabilities

• Long-Running Agent Execution: Maintains goals, manages dependencies, handles feedback, and validates intermediate results across many steps.
• Complex Software Engineering: Understands real repositories and performs issue diagnosis, multi-file changes, test repair, and iterative refinement.
• Interactive and Visual Development: Builds websites, applications, and interactive artifacts from product ideas or image references, then improves their structure and presentation.
• Knowledge Work: Supports research, information analysis, professional document handling, synthesis, and structured deliverables.
• Image Understanding: Analyzes text together with JPEG or PNG images for interface review, chart interpretation, and visual-source analysis.
• Agentic Tool Calling: Connects custom functions, search, files, and code execution in loops that move from reasoning to action and validation.
• Adjustable Reasoning Depth: Four reasoning levels cover fast tool use, long-context analysis, and demanding mathematical or logical problems.

Technical Strengths

Feature	Benefit
500,000-Token Context	Keeps large repositories, long documents, and extended agent trajectories within one task with less fragmentation.
Four Reasoning Levels	low, medium, high, and xhigh align depth with task difficulty and response requirements; high is the default.
Long-Horizon Self-Testing	Checks its own work, detects issues, and continues iterating during extended execution.
Joint Text and Image Input	Combines requirements, code, screenshots, charts, and interface references in one context.
Structured Tool Orchestration	Function calling and structured output support reliable connections to business systems and downstream software.
Server-Side Agent Tools	Web Search, X Search, file retrieval, and code execution extend real-time research and data analysis.

Frequently Asked Questions

How should I choose among the four reasoning-effort levels in Grok 4.6?

Use low for simple tool calls and latency-sensitive agents, medium for complex analysis and long-context reasoning, and the default high for difficult mathematics, logic, and multi-step problems. Reserve xhigh for the hardest quality-first tasks, and compare completion rate, tool loops, and response time on representative workloads.

Can reasoning be disabled in Grok 4.6?

No. The official documentation states that reasoning cannot be disabled and defaults to high when no level is provided; presencePenalty, frequencyPenalty, and stop are also incompatible with these reasoning models and cause request errors.

Is Grok 4.6 suitable for long-running agents?

Yes; long-running agents are a central focus of this release. It can research, work across repositories, call tools, self-test, and revise its work over many steps, while production systems should still enforce permissions, timeouts, checkpoints, and human approvals.

Which visual capabilities does Grok 4.6 support?

It accepts text and image inputs and can analyze JPEG or PNG screenshots, interfaces, charts, and other visual material, while its output remains text. It does not generate images, video, or speech through this model endpoint; those tasks use the specialized Grok Imagine or Voice interfaces.

When should I choose Grok 4.6 instead of Grok 4.7?

Grok 4.7 is the later flagship release, while Grok 4.6 retains an official API endpoint with 500,000-token context, image input, and four reasoning levels. New projects can evaluate 4.7 first, whereas established 4.6 workflows should run regression tests on real coding, agent, and visual tasks before migrating.

How do I call Grok 4.6 on LinkModel?

Grok 4.6 is available on LinkModel. Use the public model ID, request format, and parameters displayed on LinkModel's live model page, then begin with a small text request to validate authentication, response handling, and streaming before adding images, long context, and tools.

How should I validate the Grok 4.6 integration on LinkModel?

Confirm the public ID, context limits, image input, structured output, reasoning levels, and tool support on LinkModel's current model page, then test short text, long context, image understanding, function calling, and error recovery separately. Do not assume xAI's Web Search, X Search, file tools, or xhigh parameter pass through LinkModel unchanged; production validation should also cover timeouts, refusals, tool failures, and retries.