Step Fun

阶跃星辰🇨🇳 Works in China

Cutting-edge Chinese AI — strong at mathematical reasoning

★★★★★4.3

Difficulty:Easy to learn

Visit Website ↗🔌 API Docs

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Pricing

Free / Paid

🆓

Free Tier

✓

🇨🇳

China VPN

✓ No VPN

🔌

API

✓

📖 About

Step Fun (阶跃星辰) is a rising Chinese AI company with strong multimodal models, particularly noted for mathematical reasoning and long-context understanding comparable to leading global models.

💰 Pricing

Step App Free体验；API 商业接入pay-as-you-go

✓ Pros

•Strong math and logic

•Competitive with leading models

•No VPN needed

✗ Cons

•Smaller ecosystem than Alibaba/Baidu

•Less community resources

•API pricing can be high

⚡ Key Features

Mathematical reasoningLong-context supportMultimodal inputCode generationAPI access

🎯 Use Cases

Mathematical problem solvingScientific analysisCode and algorithm generationResearch assistanceData analysis

👤 Best for: Chinese users who need strong mathematical reasoning and multi-modal AI capability

❓ FAQ

Is Step Fun free? How much does it cost?▾

Step Fun offers a free tier you can start with right away. Full features require a paid plan: Step App Free体验；API 商业接入pay-as-you-go.

Can I use Step Fun in China without a VPN?▾

Yes — Step Fun is directly accessible in mainland China without a VPN.

How do I get started with Step Fun?▾

Getting started with Step Fun: ① Visit https://www.stepfun.com and create an account; ② The free tier gives you immediate access to core features; ③ Key features to explore: Mathematical reasoning, Long-context support, Multimodal input. It's best suited for: Chinese users who need strong mathematical reasoning and multi-modal AI capability.

Does Step Fun have an API?▾

Yes — Step Fun offers an official API for developers. Visit the official documentation on their website to get an API key and explore integration options.

Who is Step Fun best for?▾

Step Fun is best for: Chinese users who need strong mathematical reasoning and multi-modal AI capability. Its main strengths are Strong math and logic and Competitive with leading models. Common use cases include: Mathematical problem solving, Scientific analysis, Code and algorithm generation.

What are the pros and cons of Step Fun?▾

Pros: Strong math and logic; Competitive with leading models; No VPN needed. Cons: Smaller ecosystem than Alibaba/Baidu; Less community resources; API pricing can be high. Overall: Cutting-edge Chinese AI — strong at mathematical reasoning.

Step Fun vs Kimi: which is better?▾

Step Fun vs Kimi: Step Fun excels at Strong math and logic and Competitive with leading models, making it ideal for Chinese users who need strong mathematical reasoning and multi-modal AI capability. Both have their strengths — the right choice depends on your specific workflow and budget.

Is Step Fun safe to use?▾

Step Fun is developed by 阶跃星辰. Before use, review their official privacy policy. Avoid uploading personally sensitive information. Enterprise users should look for plans with data isolation guarantees.