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  "markdown": "Co-founder and CTO.\n\nYibo Zhu is a co-founder of StepFun, the Shanghai AI company behind the Step model series, where he leads systems work. He has experience building and running large-scale systems and previously worked at ByteDance and Google.\n\n- LinkedIn: https://www.linkedin.com/in/yibo-zhu-66494750\n\n## What Yibo builds\n\n- [StepFun API](https://www.anchorterminal.com/tools/stepfun-api.md), graded E, 44.4/100, in Model APIs \u0026 inference. The StepFun API is StepFun's paid model API for its Step language, vision and speech models, including the flagship Step 5 Preview, through OpenAI-style Chat Completions and Responses endpoints and an Anthropic-style Messages endpoint. Co-founder and CTO, researched 2026-10-27.\n\n## Works with\n\n- [Daxin Jiang](https://www.anchorterminal.com/people/daxin-jiang/), Co-founder and CEO\n\n## Backed by\n\n- [Huaqin Technology](https://www.anchorterminal.com/investors/huaqin-technology/)\n- [OmniVision Technologies](https://www.anchorterminal.com/investors/omnivision-technologies/)\n- [ZTE Corporation](https://www.anchorterminal.com/investors/zte-corporation/)\n- [Hong Kong Investment Corporation](https://www.anchorterminal.com/investors/hong-kong-investment-corporation/)\n\n## Questions\n\n### Who is Yibo Zhu?\n\nYibo Zhu is a co-founder of StepFun, the Shanghai AI company behind the Step model series, where he leads systems work. He has experience building and running large-scale systems and previously worked at ByteDance and Google.\n\n### What does StepFun make?\n\nAnchor Terminal lists StepFun API from StepFun. The StepFun API is StepFun's paid model API for its Step language, vision and speech models, including the flagship Step 5 Preview, through OpenAI-style Chat Completions and Responses endpoints and an Anthropic-style Messages endpoint.\n\n### Who has invested in StepFun?\n\nThe sources our research read name Huaqin Technology, OmniVision Technologies, ZTE Corporation and Hong Kong Investment Corporation.\n\n### How are Yibo's tools graded?\n\nStepFun API is graded E, 44.4 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.\n\n## Sources\n\n- https://cn.linkedin.com/in/daxin-jiang-00006124\n- https://yibozhu.com/\n- https://www.linkedin.com/in/yibo-zhu-66494750\n- https://www.linkedin.com/company/stepfun-ai\n- https://x.com/StepFun_ai\n- https://platform.stepfun.ai/developer-community\n- https://platform.stepfun.com\n\nThese are the people building the tools we list, named for their public role in the company or project behind a listing, from public pages, with the date it was researched. They don't work for Anchor Terminal (our own team is on the about page, /about/#author). We show public roles, public profiles and what the listing pages show, nothing private. To correct something, send an about or a photo, or have a page removed, write to privacy@anchorterminal.com.\n",
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