AI Model Release Tracker - Timeline of Major AI Models from 2022-2026

Code Llama vs Grok 4 Heavy

Meta
Code Llama
SpaceXAI
Grok 4 Heavy
Overview
CompanyMetaSpaceXAI
Release dateAug 24 2023Jul 9 2025
AccessOpen WeightProprietary
Timeline
Release gapCode Llama shipped 685 days before Grok 4 Heavy

Which is better: Code Llama or Grok 4 Heavy?

Code Llama and Grok 4 Heavy don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Code Llama shipped 685 days before Grok 4 Heavy, so benchmark comparisons should account for the intervening progress.

Code Llama is open weight, while Grok 4 Heavy is proprietary.

Direct benchmark comparisons are unavailable — Code Llama and Grok 4 Heavy don't publish scores on any of the same benchmarks.

Frequently asked questions

Code Llama was released by Meta on Aug 24 2023.

Grok 4 Heavy was released by SpaceXAI on Jul 9 2025.

Code Llama is an open weight model released by Meta. Grok 4 Heavy is a proprietary model released by SpaceXAI.

Other comparisons