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

DeepSeek V3.1 Terminus vs Muse Spark

DeepSeek
DeepSeek V3.1 Terminus
Meta
Muse Spark
Overview
CompanyDeepSeekMeta
Release dateSep 22 2025Apr 8 2026
AccessOpen WeightProprietary
Benchmarks
Agentic coding
SWE-Bench Pro
55%
Coding
SWE-Bench Verified
77.4%
Agentic coding
DeepSWE 1.1
10%
Agentic terminal coding
Terminal-Bench 2.1
67.3%
Multi-step tool use
MCP Atlas
82.2%
Professional tool use
JobBench
17%
Personal tool use
Toolathlon-Verified
49.4%
Multidisciplinary reasoning
Humanity's Last Exam · with tools
50.4%
Abstract reasoning
ARC-AGI-2
42.5%
Science
GPQA Diamond
89.5%
Agentic computer use
OSWorld-Verified
53.3%
Chart reasoning
CharXiv Reasoning
88.9%
Visual reasoning
BabyVision
39.9%
Multimodal
MMMU
80.4%
Community preference
Arena Elo (Text)
1488
Timeline
Release gapDeepSeek V3.1 Terminus shipped 198 days before Muse Spark

Which is better: DeepSeek V3.1 Terminus or Muse Spark?

DeepSeek V3.1 Terminus and Muse Spark don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. DeepSeek V3.1 Terminus shipped 198 days before Muse Spark, so benchmark comparisons should account for the intervening progress.

DeepSeek V3.1 Terminus is open weight, while Muse Spark is proprietary.

Direct benchmark comparisons are unavailable — DeepSeek V3.1 Terminus and Muse Spark don't publish scores on any of the same benchmarks.

Frequently asked questions

DeepSeek V3.1 Terminus was released by DeepSeek on Sep 22 2025.

Muse Spark was released by Meta on Apr 8 2026.

DeepSeek V3.1 Terminus is an open weight model released by DeepSeek. Muse Spark is a proprietary model released by Meta.

Other comparisons