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AI21 Labs vs 阶跃星辰 StepFun
A factual side-by-side comparison of AI21 Labs and 阶跃星辰 StepFun. We compare pricing, categories, free tiers and official websites — no invented scores.
Updated 2026-10-22
Quick take
Both AI21 Labs and 阶跃星辰 StepFun are Freemium. Pick the one whose tagline and categories match your use case, then check the alternatives below.
| Pricing | Freemium | Freemium |
|---|---|---|
| Categories | LLMs | LLMs / AI Chat |
| Best for | Israeli NLP pioneer behind Jamba open models | StepFun's Step series: strong multimodal open models |
| Free tier | Yes — free or freemium | Yes — free or freemium |
| Website | www.ai21.com | www.stepfun.com |