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

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Claude 2.1 vs Muse Spark

0 vs 3 benchmarks won

Anthropic
Claude 2.1
Meta
Muse Spark
Overview
CompanyAnthropicMeta
Release dateNov 21 2023Apr 8 2026
Model type
Open sourceNoNo
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 gapClaude 2.1 shipped 869 days before Muse Spark

Which is better: Claude 2.1 or Muse Spark?

Muse Spark leads Claude 2.1 on 3 of the tracked benchmarks (GPQA Diamond, SWE-Bench Verified, MMMU). Claude 2.1 shipped 869 days before Muse Spark, so benchmark comparisons should account for the intervening progress.

Published specifications for these two models are limited — see each model page for the latest details.

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 Claude 2.1 released?
Claude 2.1 was released by Anthropic on Nov 21 2023.
When was Muse Spark released?
Muse Spark was released by Meta on Apr 8 2026.

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