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

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Muse Spark vs Grok‑1

3 vs 0 benchmarks won

Meta
Muse Spark
xAI
Grok‑1
Overview
CompanyMetaxAI
Release dateApr 8 2026Nov 3 2023
Model type
Open sourceNoYes
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
89.5%
Software engineering
SWE-Bench Verified
77.4%
Multimodal understanding
MMMU
80.4%
Timeline
Release gapGrok‑1 shipped 887 days before Muse Spark

Which is better: Muse Spark or Grok‑1?

Muse Spark leads Grok‑1 on 3 of the tracked benchmarks (GPQA Diamond, SWE-Bench Verified, MMMU). Grok‑1 shipped 887 days before Muse Spark, so benchmark comparisons should account for the intervening progress.

Grok‑1 is an open-source / open-weight model; Muse Spark is proprietary.

Direct benchmark comparisons are unavailable — at least one of these models has not published scores on GPQA Diamond, SWE-Bench Verified, or MMMU.

Frequently asked questions

When was Muse Spark released?
Muse Spark was released by Meta on Apr 8 2026.
When was Grok‑1 released?
Grok‑1 was released by xAI on Nov 3 2023.
Is Muse Spark or Grok‑1 open source?
Grok‑1 is an open-source / open-weight model released by xAI. Muse Spark is a proprietary model released by Meta.

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