Best xAI Models for Coding

Quick answer · Updated June 2026

Grok 4.3 is the best xAI model for coding, with a 41.0 Artificial Analysis Coding Index across benchmarks like SWE-bench and SciCode. Grok 4.20 (25.4) is next.

41.0Coding

53.2Intelligence

155 t/sSpeed

$1.25Input /M

1MContext

AI models ranked by the Artificial Analysis Coding Index, measuring real-world software engineering ability across benchmarks like SWE-bench, SciCode and terminal tasks. The best LLMs for code generation, debugging and agentic development.

Frequently asked

What is the best xAI model for coding?

Grok 4.3 is the best xAI model for coding, with a 41.0 Artificial Analysis Coding Index across benchmarks like SWE-bench and SciCode. Grok 4.20 (25.4) is next.

What's a good alternative to Grok 4.3?

Grok 4.20 (25.4) is the closest alternative on this metric. See the full ranking above for the tradeoffs.

How many xAI models are there?

modelgrep tracks 4 xAI models with live benchmarks, speed, latency and per-provider pricing, led on intelligence by Grok 4.3. 2 of them qualify for this ranking.

More xAI rankings

xAI: Smartest LLMs xAI: Best LLMs for Design & Frontend xAI: Fastest LLMs xAI: Lowest-Latency LLMs xAI: Cheapest LLMs xAI: Best Free LLMs xAI: Best Reasoning LLMs xAI: Best Vision LLMs xAI: Best LLMs for Agents xAI: Best Open-Source LLMs xAI: Longest-Context LLMs

All rankings

Small & Fast LLMs Smartest LLMs Best LLMs for Design & Frontend Fastest LLMs Lowest-Latency LLMs Cheapest LLMs Best Free LLMs Best Reasoning LLMs Best Vision LLMs Best LLMs for Agents Best Open-Source LLMs Longest-Context LLMs