---
title: "xAI's Grok 4.6 nears GPT-5.6, costs 60% less"
url: https://www.parallelquant.com/posts/xai-s-grok-4-6-nears-gpt-5-6-costs-60-less-8f73ad
source_name: "The Decoder"
source_url: https://the-decoder.com/spacexais-grok-4-6-matches-openais-best-model-and-undercuts-it-on-price/
published: 2026-08-12T18:33:21.000Z
topics: ["llms", "products"]
publisher: "Parallel Quant"
---

# xAI's Grok 4.6 nears GPT-5.6, costs 60% less

*2026-08-12 · Source: [The Decoder](https://the-decoder.com/spacexais-grok-4-6-matches-openais-best-model-and-undercuts-it-on-price/)*

xAI's Grok 4.6 scored 61 on the Artificial Analysis Intelligence Index, tying OpenAI's GPT-5.6 Sol and trailing only Anthropic's Claude Opus 5. On agentic tasks it completed workflows in about 53 steps versus Claude Opus 5's 103, while pricing more than 60% below Claude Opus 5.

**Why it matters:** This narrows the gap between xAI and the two leaders on both capability and cost, intensifying price competition among frontier models. If Grok's step-efficiency advantage holds up outside benchmarks, it could make xAI attractive for agentic and tool-use workloads where cost per task matters more than raw score.

**Topics:** llms, products

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Read the original: https://the-decoder.com/spacexais-grok-4-6-matches-openais-best-model-and-undercuts-it-on-price/
Canonical: https://www.parallelquant.com/posts/xai-s-grok-4-6-nears-gpt-5-6-costs-60-less-8f73ad
Published by Parallel Quant — https://www.parallelquant.com