xAI Releases Grok 4.6: Long-Running Agents, Stronger Visual and Interactive Work

Artificial intelligence company xAI today released Grok 4.6, the successor to Grok 4.5, with a particular focus on long-running agents and more ambitious interactive and visual work. According to the official announcement, the model stays with complex tasks across many steps, whether researching a topic, analyzing information, working across a codebase, or turning an idea into a polished application or work artifact.

Focus on long-running agents

Compared with Grok 4.5, the main progress in Grok 4.6 is in long-running agent tasks. The model can sustain multi-step complex work, from researching topics and analyzing information to working across a codebase and turning a product idea into a working first version. On longer trajectories, xAI says it observed more self-testing and verification, with the model checking its own work before moving on.

Benchmark performance

Grok 4.6 reaches frontier-level performance across several agentic coding and knowledge work benchmarks. It scores 61 on the Artificial Analysis Intelligence Index, a composite of nine benchmarks, matching GPT-5.6 Sol. Other results include 1753 on GDPVal-AA v2, 69.9% on CursorBench v3.2, 65.9% on DeepSWE v1.1, and 61.3% on FrontierCode v1.1 (Extended).

Product development capability

In projects designed to test its range and ability to sustain work over many steps, xAI found Grok 4.6 especially strong at turning a broad product idea into a working first version. It can research unfamiliar domains, structure the application, implement the core interactions, and refine the result through several rounds of feedback. On visual and interactive projects, its first passes are stronger than those typically seen with Grok 4.5, establishing structure and visual language for an application in a single pass.

Training and safety

Grok 4.6 underwent a longer supplemental training run than Grok 4.5, using curated model-generated data for reasoning and advanced technical concepts, high-quality engineering data, and an improved optimizer and training recipe. The team then used Grok 4.5 to regenerate SFT trajectories across reasoning, agent harnesses, and domains including STEM, software engineering, and knowledge work, filtering out problematic traces with model-based checks. On safety, xAI says Grok 4.6’s safeguards have been improved and calibrated in line with the model’s capabilities, backed by its widest-ever suite of pre-deployment testing plus post-deployment and third-party testing.

Availability and pricing

Grok 4.6 is available today in Cursor and Grok Build, with 2x included usage in both for the first week. It is also available through the API and partners including OpenRouter, Vercel, and Cloudflare. Pricing starts at $2 per million input tokens and $6 per million output tokens, with a faster variant at twice the price.

Source: xAI official announcement

Cover image generated by AI for illustrative purposes only.