artificialbuilds

Comparison

Claude Opus 5.5 vs DeepSeek Harness

People have published 201 builds with Claude Opus 5.5 and 187 with DeepSeek Harness, overlapping in 8 use cases. Claude Opus 5.5 has more animation videos, games examples; DeepSeek Harness has more productivity.

Claude Opus 5.5

First model in Anthropic's Claude 5.5 family. Positioned for agentic coding, knowledge work and long tasks; priced at $4/$20 per million input/output tokens, about 30% faster output than Opus 5, and top scores on Anthropic's behavioral alignment audit.

201
Entries: 186
Creators: X, Reddit, GitHub
Top source

DeepSeek Harness

DeepSeek's MIT-licensed open-source agent harness built on the Cordis meta-framework, where models, tools, skills, sessions and UI are all plugins. Harness Desktop for macOS and Windows followed on 2026-10-02.

187
Entries: 174
Creators: GitHub, X, YouTube
Top source

Same use case, side by side

Use caseClaude Opus 5.5DeepSeek Harness

Animation videos

Claude Opus 5.5 · 58 entries"I'm Upping My P(doom)" music video, full source

DeepSeek Harness · 3 entriesbrewreel: Generates polished vertical promo videos from a product brief using ch

Games

Claude Opus 5.5 · 45 entriesBrowser game pipeline chaining Blender, image generation and three.js

DeepSeek Harness · 8 entriesAgent tavern: SillyTavern character cards running on DeepSeek Harness

Productivity

Claude Opus 5.5 · 6 entriesInteractive slides where figures recalculate live

DeepSeek Harness · 44 entriesdsh-desktop: Packaged desktop edition of DeepSeek Harness from DataElement, giving

Coding

Claude Opus 5.5 · 8 entriesOmarchy screensaver engine ported from Rust to x86-64 assembly

DeepSeek Harness · 41 entriesDeepSeek Harness: official open-source agent harness where everything is a plugin

Design

Claude Opus 5.5 · 14 entriesGlitter sticker shader effect, Opus 5.5 versus GPT-6 Sol

DeepSeek Harness · 27 entriesdsh-deep-whale: Series of whale-girl skins that restyle the DeepSeek Harness interface

Agents

Claude Opus 5.5 · 10 entriesOpus 5.5 splits a launch video across 12 laptops

DeepSeek Harness · 18 entriesjev-dsh-decision: Structured decision-engine plugin for agent harnesses that natively su

3D graphics

Claude Opus 5.5 · 22 entriesTidewater: a coastal town built with Opus 5.5

DeepSeek Harness · 1 entrydsh-blender-plugin: Lets a dsh agent drive Blender over a direct TCP channel in realtime t

Automation

Claude Opus 5.5 · 2 entriesclaudemanager: proxy that rotates Claude Code across Max accounts

DeepSeek Harness · 20 entriesdsh-routing-suite: Routing kit that injects a runtime layer and a task-aware router into

Top builds with Claude Opus 5.5

1
Warehouse management software styled like a strategy gameon X:Dilum Sanjaya· 24.4K likes24.4K likes
2
"I'm Upping My P(doom)" music video, full sourceon GitHub:John Heibel· 1.9K stars1.9K stars
3
Awesome Opus 5.5 Videos (prompt gallery)on GitHub:yihui-dev· 1.5K stars1.5K stars
4
Opus 5.5 motion-designer showreel from one Max-effort prompton X:Stephan Livera· 17.1K likes17.1K likes
5
12-hour overnight run: Opus 5.5 plus Midjourney and a moodboardon X:anabology· 15.9K likes15.9K likes

Top builds with DeepSeek Harness

1
DeepSeek Harness: official open-source agent harness where everything is a pluginon GitHub:deepseek-ai· 245.1K stars245.1K stars
2
dsh-desktop: Desktop app for the DeepSeek Harness plugin ecosystem where the desktoon GitHub:anywhere-labs· 30.1K stars30.1K stars
3
dsh-desktop: Packaged desktop edition of DeepSeek Harness from DataElement, givingon GitHub:dataelement· 12.2K stars12.2K stars
4
dsh-routing-suite: Routing kit that injects a runtime layer and a task-aware router intoon GitHub:yjh051108· 7K stars7K stars
5
dsh-market: Visual plugin market living inside DeepSeek Harnesson GitHub:dsh-market· 5.7K stars5.7K stars