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

DeepSeek-R1-Lite Preview vs Grok 4.5

DeepSeek
DeepSeek-R1-Lite Preview
SpaceXAI
Grok 4.5
Overview
CompanyDeepSeekSpaceXAI
Release dateNov 20 2024Jul 8 2026
AccessOpen WeightProprietary
Benchmarks
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 gapDeepSeek-R1-Lite Preview shipped 595 days before Grok 4.5

Which is better: DeepSeek-R1-Lite Preview or Grok 4.5?

DeepSeek-R1-Lite Preview and Grok 4.5 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. DeepSeek-R1-Lite Preview shipped 595 days before Grok 4.5, so benchmark comparisons should account for the intervening progress.

DeepSeek-R1-Lite Preview is open weight, while Grok 4.5 is proprietary.

Direct benchmark comparisons are unavailable — DeepSeek-R1-Lite Preview and Grok 4.5 don't publish scores on any of the same benchmarks.

Frequently asked questions

DeepSeek-R1-Lite Preview was released by DeepSeek on Nov 20 2024.

Grok 4.5 was released by SpaceXAI on Jul 8 2026.

DeepSeek-R1-Lite Preview is an open weight model released by DeepSeek. Grok 4.5 is a proprietary model released by SpaceXAI.

Other comparisons