Comparison

Claude Opus 5.5 vs Jev

People have published 201 builds with Claude Opus 5.5 and 180 with Jev, overlapping in 8 use cases. Claude Opus 5.5 has more games examples; Jev has more productivity, coding.

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

Jev is TypeSafe AI's first public System One decision model: it answers closed questions (labels, yes/no, scores, choices) with structured output in milliseconds for a fraction of a cent, rather than generating prose.

180
Entries: 164
Creators: X, GitHub, Web
Top source

Same use case, side by side

Use caseClaude Opus 5.5Jev

Games

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

Jev · 24 entriesJev plays Doom

Productivity

Claude Opus 5.5 · 6 entriesInteractive slides where figures recalculate live

Jev · 35 entriesSmart copy and paste that decides what to paste

Coding

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

Jev · 29 entrieslaya: Non-autoregressive System 1 decision engine. Typed choice, score and y

Agents

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

Jev · 23 entriesFlight search with Browser Use

Design

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

Jev · 3 entriesA text box that turns into whatever UI you type

Education

Claude Opus 5.5 · 13 entriesInteractive camera-lens lab built in one shot

Jev · 3 entriesReadwithjev: live emotion highlighting while you read

Automation

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

Jev · 12 entries500 emails for 3.5 cents

Research

Claude Opus 5.5 · 1 entryLiveNerf: daily check for Opus 5.5 degradation

Jev · 13 entriesJev-guided sparse attention speeds up MiniMax H3 video generation

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
Five minutes of talking, twelve hours of Claude, one finished filmon X:donald· 11K likes11K likes
3
"I'm Upping My P(doom)" music video, full sourceon GitHub:John Heibel· 1.9K stars1.9K stars
4
Awesome Opus 5.5 Videos (prompt gallery)on GitHub:yihui-dev· 1.5K stars1.5K stars
5
Opus 5.5 motion-designer showreel from one Max-effort prompton X:Stephan Livera· 17.1K likes17.1K likes

Top builds with Jev

1
NandhaKishorM/laya
laya: Non-autoregressive System 1 decision engine. Typed choice, score and yon GitHub:NandhaKishorM· 31.4K stars31.4K stars
2
jev-ultrafast: Fastest and cheapest web agenton GitHub:browser-use· 22.3K stars22.3K stars
3
kev: Jev-like family of decision models built on top of Qwen3.5/3.8 you canon GitHub:jaredpalmer· 8.6K stars8.6K stars
4
jev-chat-jarvis: The chat decision assistant: before you reply, Jev reads the chat, judon GitHub:jev-chat· 7.4K stars7.4K stars
5
fast-jev-compaction: Claude Code plugin that replaces the compaction summary with Jev…on GitHub:tamaratran· 7.5K stars7.5K stars