Not established from the available sources.
XAI · MODEL RELEASE TRACKER
Grok 4.6
Grok 4.6 is xAI's flagship model (announced 2026-09-16) focused on long-running agents, interactive and visual work, and multi-step coding and knowledge tasks. It offers a 500K token context window and configurable reasoning effort levels. Grok 4.6 is available in Cursor and Grok Build and through major cloud marketplaces (Amazon Bedrock, Microsoft Foundry, Gemini Enterprise Agent Platform). It showed strong biosecurity refusal behavior on LatchBio’s benchmark and matches GPT-5.6 Sol on the Artificial Analysis Intelligence Index per xAI.CURRENT SNAPSHOT4/5 DIMENSIONS WITH DATA
The dimensions that change the decision.
Context window500,000 tokens (500K).
Primary modalities / target domainsTargeted at coding, agentic knowledge work, and interactive/visual projects.
Artificial Analysis Intelligence IndexxAI reports Grok 4.6 matches GPT-5.6 Sol on the Artificial Analysis Intelligence Index (a composite of multiple benchmarks).
Product availabilityAvailable in Cursor and Grok Build; xAI offered 2× included usage inside Grok Build and Cursor for the first week of the release.
Cloud and platform availabilityAvailable via Amazon Bedrock, Microsoft Foundry, and Gemini Enterprise Agent Platform (Model Garden); available to developers in supported AWS Regions.
RELEASE TIMELINE
Published, source-backed release events only.
VERIFIABLE FACTS
Every value stays attached to a source and date.
RELEASE · Release announcementDEVELOPER CLAIM
xAI announced the release of Grok 4.6 (announcement published 2026-09-16).
OTHER · Designed for long-running agents and complex multi-step tasksDEVELOPER CLAIM
Described as focused on long-running agents and ambitious interactive and visual work; stays with complex tasks across many steps (researching, analyzing, working across codebases, turning ideas into working artifacts).
MODALITIES · Primary modalities / target domainsDEVELOPER CLAIM
Targeted at coding, agentic knowledge work, and interactive/visual projects.
CONTEXT WINDOW · Context windowDEVELOPER CLAIM
500,000 tokens (500K).
OTHER · Configurable reasoning effort levelsDEVELOPER CLAIM
Supports configurable reasoning effort levels: low, medium, high, and xhigh.
OTHER · Artificial Analysis Intelligence Index resultDEVELOPER CLAIM
Reported to match GPT-5.6 Sol on the Artificial Analysis Intelligence Index (a composite of nine benchmarks).
AVAILABILITY · Product availabilityDEVELOPER CLAIM
Available in Cursor and Grok Build; xAI offered 2× included usage inside Grok Build and Cursor for the first week of the release.
AVAILABILITY · Cloud and platform availabilityDEVELOPER CLAIM
Available via Amazon Bedrock, Microsoft Foundry, and Gemini Enterprise Agent Platform (Model Garden); available to developers in supported AWS Regions.
RELEASE · Release dateDEVELOPER CLAIM
Announced/released on 2026-09-16 (xAI announcement).
CAPABILITIES · Primary use casesDEVELOPER CLAIM
Designed for long-running agents, ambitious interactive and visual work, and sustained multi-step coding and knowledge-work tasks; shows more self-testing and verification on longer trajectories.
CAPABILITIES · Configurable reasoning effort levelsDEVELOPER CLAIM
Supports configurable reasoning efforts: low, medium, high, and xhigh.
BENCHMARKS · Artificial Analysis Intelligence IndexDEVELOPER CLAIM
xAI reports Grok 4.6 matches GPT-5.6 Sol on the Artificial Analysis Intelligence Index (a composite of multiple benchmarks).
SAFETY · Biosecurity / refusal behaviorDEVELOPER CLAIM
On LatchBio's BioSecBench-Refusal suite, Grok 4.6 was reported as the strongest model tested at refusing disguised and hazardous biological tasks and was the only system to score above 50% on both measures.
WHAT CHANGED
Stored passport versions, without reconstructed history.
AVAILABILITY · Availability on Amazon Bedrock (packaging)− Launched on Amazon Bedrock (reported Bedrock launch date 2026-08-18); on Bedrock it is offered on both bedrock-mantle and bedrock-runtime endpoints and supports the Converse API alongside Chat Completions and Responses.
BENCHMARKS · Artificial Analysis Intelligence Index+ xAI reports Grok 4.6 matches GPT-5.6 Sol on the Artificial Analysis Intelligence Index (a composite of multiple benchmarks).
OTHER · Artificial Analysis Intelligence Index resultReported to match GPT-5.6 Sol on the Artificial Analysis Intelligence Index (a composite of nine benchmarks).→Reported to match GPT-5.6 Sol on the Artificial Analysis Intelligence Index (a composite of nine benchmarks).
SAFETY · Biosecurity / refusal behavior+ On LatchBio's BioSecBench-Refusal suite, Grok 4.6 was reported as the strongest model tested at refusing disguised and hazardous biological tasks and was the only system to score above 50% on both measures.
AVAILABILITY · Cloud and platform availability+ Available via Amazon Bedrock, Microsoft Foundry, and Gemini Enterprise Agent Platform (Model Garden); available to developers in supported AWS Regions.
OTHER · Configurable reasoning effort levelsSupports configurable reasoning effort levels: low, medium, high, and xhigh.→Supports configurable reasoning effort levels: low, medium, high, and xhigh.
CONTEXT WINDOW · Context window+ 500,000 tokens (500K).
CONTEXT WINDOW · Context window− Offers a 500,000-token (500k) context window.
AVAILABILITY · Availability in xAI products− Available in Cursor and Grok Build (announced as available today).
OTHER · Designed for long-running agents and complex multi-step tasksDescribed as focused on long-running agents and ambitious interactive and visual work; stays with complex tasks across many steps (researching, analyzing, working across codebases, turning ideas into working artifacts).→Described as focused on long-running agents and ambitious interactive and visual work; stays with complex tasks across many steps (researching, analyzing, working across codebases, turning ideas into working artifacts).
CAPABILITIES · Primary use cases+ Designed for long-running agents, ambitious interactive and visual work, and sustained multi-step coding and knowledge-work tasks; shows more self-testing and verification on longer trajectories.
AVAILABILITY · Product availability+ Available in Cursor and Grok Build; xAI offered 2× included usage inside Grok Build and Cursor for the first week of the release.
CAPABILITIES · Configurable reasoning effort levels+ Supports configurable reasoning efforts: low, medium, high, and xhigh.
RELEASE · Release announcementxAI announced the release of Grok 4.6 (announcement published 2026-09-16).→xAI announced the release of Grok 4.6 (announcement published 2026-09-16).
RELEASE · Release date+ Announced/released on 2026-09-16 (xAI announcement).
MODALITIES · Primary modalities / target domainsTargeted at coding, agentic knowledge work, and interactive/visual projects.→Targeted at coding, agentic knowledge work, and interactive/visual projects.