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

LLaMA 3.1 vs Grok 4.5

Meta
LLaMA 3.1
SpaceXAI
Grok 4.5
Overview
CompanyMetaSpaceXAI
Release dateJul 23 2024Jul 8 2026
AccessOpen WeightProprietary
Benchmarks
Nonsense detection
BullshitBench v2
14%
Agentic coding
SWE-Bench Pro
64.7%
Multilingual coding
SWE-Bench Multilingual
78%
Agentic coding
DeepSWE 1.0
62%
Agentic terminal coding
Terminal-Bench 2.1
83.3%
Timeline
Release gapLLaMA 3.1 shipped 715 days before Grok 4.5

Which is better: LLaMA 3.1 or Grok 4.5?

LLaMA 3.1 and Grok 4.5 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. LLaMA 3.1 shipped 715 days before Grok 4.5, so benchmark comparisons should account for the intervening progress.

LLaMA 3.1 is open weight, while Grok 4.5 is proprietary.

Direct benchmark comparisons are unavailable — LLaMA 3.1 and Grok 4.5 don't publish scores on any of the same benchmarks.

Frequently asked questions

LLaMA 3.1 was released by Meta on Jul 23 2024.

Grok 4.5 was released by SpaceXAI on Jul 8 2026.

LLaMA 3.1 is an open weight model released by Meta. Grok 4.5 is a proprietary model released by SpaceXAI.

Other comparisons