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🚨SHOCKING: StepFun's Step 5 Preview just hit #1 on OpenRouter Trending. It's a 600B MoE with only 27B active, a 1M context window, and it was built for long-horizon agent work with finance-focused reasoning. So I plugged it into Claude Code and had it build a playable finance game...

59,140 просмотров • 5 дней назад •via X (Twitter)

Комментарии: 10

Фото профиля Jaynit Makwana
Jaynit Makwana5 дней назад

The game starts with a simple idea: You get a starting balance and move through different money decisions. Each round forces a choice: → save money → invest money → spend on lifestyle → build emergency fund → high-risk opportunity The final result depends on the decisions you make.

Фото профиля Jaynit Makwana
Jaynit Makwana5 дней назад

I connected Claude Code to Step 5 Preview by @StepFun_ai and gave it the task. The model had to plan the game logic, create the UI, write the code, handle state, track score, and make the experience playable in the browser. Not just generate a static page.

Фото профиля Jaynit Makwana
Jaynit Makwana5 дней назад

This is what makes the test interesting. A finance game needs both: → software engineering → finance reasoning The model has to understand how decisions affect money over time, then translate that into rules, feedback, scoring, and interaction. That is closer to real agent work than a one-shot coding prompt.

Фото профиля Jaynit Makwana
Jaynit Makwana5 дней назад

Step 5 Preview is built for long-horizon agentic work: → 600B total / 27B active MoE → 1M context window → vision support → coding workflows → finance-focused reasoning → professional knowledge work It has now reached #1 on OpenRouter Trending. If you are building agents for serious workflows, this is worth testing. Try Step 5 Preview on OpenRouter:

Фото профиля Jaynit Makwana
Jaynit Makwana5 дней назад

That's a wrap! If you enjoyed this thread: 1. Follow me @JaynitMakwana for more of these 2. RT the tweet below to share this thread with your audience

Фото профиля Winston B.
Winston B.5 дней назад

27B active on a 600B base is what makes this fun to try, since a Claude Code loop on it stays cheap enough to iterate on. And with BF16 weights due October 15, anyone can rerun this test off the API soon.

Фото профиля Dhaval Makwana
Dhaval Makwana5 дней назад

this model is amazing to use

Фото профиля Vipul Kumar Kewat
Vipul Kumar Kewat5 дней назад

The interesting part is testing a long-context model inside a real coding workflow.

Фото профиля EW | Personal Finance & Investing
EW | Personal Finance & Investing5 дней назад

wow, Step 5 Preview is amazing!

Фото профиля Andrew Bolis
Andrew Bolis5 дней назад

Nice test of both coding and finance reasoning together.

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