Grok 4.6 Complete Guide 2026: The Latest Frontier-Intelligence Model at the Same Price, Compared with Official Benchmarks

"What kind of model is Grok 4.6?" "Can I really get frontier-level performance at the same price as the previous model?"

On August 12, 2026, xAI released Grok 4.6—a major performance jump over Grok 4.5, delivered without raising the price.

It's especially strong at long-running agent tasksandmore ambitious interactive and visual work, and it scored61 on the AA Intelligence Index — tying GPT-5.6 Sol.

In this article, I'll fully explain Grok 4.6 based on the official announcement and official benchmarks.

What You'll Learn in This Article

What Grok 4.6 is
What's improved (training, performance)
Full official benchmark comparison table
Pricing (API)
How to use it (Grok Build, Cursor, API)

What Is Grok 4.6?

Grok 4.6 is the latest frontier-grade AI model that xAI released on August 12, 2026.

Official description: "Grok 4.6 builds on Grok 4.5 with a particular focus on long-running agents and more ambitious interactive and visual work."

Handles complex tasks across many steps — researching, analyzing information, working across a codebase, or turning an idea into a working application
Delivers frontier intelligence at the same price as Grok 4.5

What's Improved?

1. Longer supplemental training

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.

2. Stronger foundation

Regenerated SFT trajectories with Grok 4.5 and filtered out problematic traces, producing a checkpoint with strong performance and improved behavior.

3. Agent-focused reinforcement learning

Trained on a wide range of agentic RL tasks — knowledge work, general coding, kernel optimization, web development, computer-aided design, and more.

4. Self-testing on long runs

On longer trajectories, Grok 4.6 does more self-testing and verification, checking its own work before moving on.

5. Stronger visual & interactive output

Produces stronger first passes on visual and interactive projects, establishing an app's structure and visual language in one pass.

Full Official Benchmark Comparison

Here are xAI's official benchmarks (Grok 4.6 High highlighted).

Benchmark	Grok 4.6	Grok 4.5	GPT-5.6 Sol Max	Fable 5 Max
AA Intelligence Index	61	56	61	62
GDPVal-AA v2	1753	1526	1728	1741
CursorBench v3.2	69.9%	66.7%	67.2%	70.5%
DeepSWE v1.1	65.9%	54%	73%	70%
FrontierCode v1.1 (Extended)	61.3%	56.6%	60.6%	64.9%
APEX-Agents	57.5%	47.1%	56.7%	59.2%
Terminal-Bench v3.0	26%	15.7%	34.6%	34.1%
APEX-SWE	56.4%	53.6%	—	58.8%
AA-Briefcase	1577	1313	1502	1574
Harvey LAB (Vals)	15.8%	12.9%	2.5%	11.3%

Key takeaways

AA Intelligence Index: Grok 4.6 scores 61,tying GPT-5.6 Sol and jumping from Grok 4.5's 56
GDPVal-AA v2, AA-Briefcase, Harvey LAB:Grok 4.6 is the top model
CursorBench, FrontierCode: roughly on par with GPT-5.6 Sol and Fable 5

※Competitor scores are the best of self-reported or publicly available results.

Pricing (API)

Grok 4.6's API pricing is half the price of other frontier models.

Item	Price
Input	$2 / 1M tokens
Output	$6 / 1M tokens
Fast variant	2x price (Input $4 / Output $12)

The biggest feature is frontier performance at the same price as Grok 4.5.

How to Use It

Grok 4.6 is available in:

Grok Build: available today (2x usage for the first week)
Cursor: available today (2x usage for the first week)
API: create a key in the xAI Console
Other: available through partners like OpenRouter, Vercel, and Cloudflare

Create an API key

Go to the xAI Console
Create an API key
Integrate following the docs

Try Grok Build for free

curl -fsSL https://x.ai/cli/install.sh | bash

Pros and Cons

Pros

Frontier-level performance (AA Intelligence Index 61 = ties GPT-5.6 Sol)
Significant improvement at the same price as Grok 4.5
Strong at long-running agents and visual work
Immediately available in Cursor, Grok Build, API, and partners
2x usage in Grok Build and Cursor for the first week

Cons and notes

Lags GPT-5.6 Sol and Fable 5 on some benchmarks (e.g., Terminal-Bench)
The Fast variant costs 2x the standard price
Benchmarks are official figures (real-world experience needs verification)

Summary

Grok 4.6 is xAI's latest flagship model, delivering frontier-level performance at the same price as the previous generation.

AA Intelligence Index 61 = ties GPT-5.6 Sol
Top model on GDPVal-AA, AA-Briefcase, and Harvey LAB
Enhanced for agents and visual work
API pricing $2/$6 (per 1M tokens) = half of frontier models

For anyone who wants "frontier-level performance at an affordable price," Grok 4.6 is a strong option.

Reference: Grok 4.6 announcement ・ Grok official site ・ xAI API