xAI Grok 4.6 Release Details and API Parameters
Review the August 2026 release of xAI Grok 4.6, including its 500k context window, multimodal inputs, tiered pricing structure, and configurable reasoning…
Release Announcement and Core Specifications
The source event date for the Grok 4.6 release is August 1, 2026. This historical date distinguishes the original announcement from the current publication date of this article. According to official changelog data, xAI identified Grok 4.6 as a frontier model designed for coding, agentic tasks, and knowledge work. The model is available via the xAI API.
Technical specifications listed in the source include a 500k token context window. Input modalities support both text and images, while output modalities are restricted to text only. The documentation states there is no text output limit. Additionally, the openWeights field is recorded as false, which indicates that open weights are not confirmed in this release record.
Pricing Structure and Reasoning Configuration
Pricing for Grok 4.6 is tiered based on prompt token length. For prompts below 200k tokens, the cost is $2 per million input tokens, $0.50 per million cached input tokens, and $6 per million output tokens. For prompts above 200k tokens, the rates increase to $4 per million input tokens, $1 per million cached input tokens, and $12 per million output tokens.
The model supports configurable reasoning effort levels. The available options are low, medium, high, and xhigh. The default setting is high. These parameters allow users to adjust the computational depth allocated to specific requests, though the source does not detail how these settings affect latency or performance metrics.
Evaluation Procedure and Verification Limits
Engineers can evaluate Grok 4.6 by designing tests that validate its handling of long-context inputs and multimodal data. A practical procedure involves creating a test suite with prompts exceeding 200k tokens to measure the transition between pricing tiers. Developers should also submit image-text pairs to verify that the model processes visual inputs correctly while generating text-only responses.
To assess reasoning capabilities, users can compare outputs generated at different effort levels (low, medium, high, xhigh) using identical complex coding tasks. This comparison helps determine if higher effort levels yield more detailed solutions. However, the source facts do not provide benchmark scores, accuracy rankings, or guaranteed performance improvements over previous models. Therefore, any conclusions about superiority must be drawn solely from internal testing results rather than external claims.
- Test context limits by submitting prompts near the 500k token boundary.
- Measure cost differences when crossing the 200k prompt token threshold.
- Validate image input processing by providing varied visual datasets.
- Compare response quality across all four reasoning effort settings.
Primary sources
Frequently asked questions
What are the exact pricing rates for Grok 4.6?
For prompts under 200k tokens, pricing is $2 per million input tokens, $0.50 per million cached input tokens, and $6 per million output tokens. For prompts over 200k tokens, pricing is $4 per million input tokens, $1 per million cached input tokens, and $12 per million output tokens.
Does Grok 4.6 support local installation?
The source records that open weights are not confirmed for this release. It does not state whether local installation is impossible or mandatory, nor does it specify hosting arrangements beyond availability on the xAI API.