{"schema_version":"onlylabs.public_signal.v1","title":"StepFun Model: stepfun-ai/NextStep-1-Large","description":"StepFun model signal with public source context, captured evidence pages, related signals, and category-scoped analysis context.","url":"https://onlylabs.fyi/signals/661477dc-daa6-4fcc-a715-64ba0019fb6f","json_url":"https://onlylabs.fyi/signals/661477dc-daa6-4fcc-a715-64ba0019fb6f/signal.json","generated_at":"2026-06-11T02:50:37.671164+00:00","org":{"slug":"stepfun","name":"StepFun","category":"neolab","category_label":"Neolab","dossier_url":"https://onlylabs.fyi/labs/stepfun","dossier_json_url":"https://onlylabs.fyi/labs/stepfun/dossier.json"},"related_urls":{"signal":"https://onlylabs.fyi/signals/661477dc-daa6-4fcc-a715-64ba0019fb6f","signal_json":"https://onlylabs.fyi/signals/661477dc-daa6-4fcc-a715-64ba0019fb6f/signal.json","source":"https://huggingface.co/stepfun-ai/NextStep-1-Large","lab_dossier":"https://onlylabs.fyi/labs/stepfun","lab_dossier_json":"https://onlylabs.fyi/labs/stepfun/dossier.json","analysis":"https://onlylabs.fyi/analysis/stepfun","analysis_json":"https://onlylabs.fyi/analysis/stepfun/analysis.json","analysis_evidence_json":"https://onlylabs.fyi/analysis/stepfun/evidence.json","category":"https://onlylabs.fyi/neolabs","category_json":"https://onlylabs.fyi/neolabs.json","category_feed":"https://onlylabs.fyi/neolabs/feed.xml","category_signals_json":"https://onlylabs.fyi/signals.json?category=neolab","topic":"https://onlylabs.fyi/topics/releases","topic_signals_json":"https://onlylabs.fyi/topics/releases/signals.json?category=neolab","topic_feed":"https://onlylabs.fyi/topics/releases/feed.xml?category=neolab","data_business":null},"answer_pack":{"answer":"StepFun published stepfun-ai/NextStep-1-Large. This model signal is evidence of what shipped on model infrastructure and how the release is positioned. 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for this category, keep conclusions tied to category-specific strategy, source evidence, and follow-up questions.","required_sources":[{"label":"signal_json","url":"https://onlylabs.fyi/signals/661477dc-daa6-4fcc-a715-64ba0019fb6f/signal.json","required":true},{"label":"source","url":"https://huggingface.co/stepfun-ai/NextStep-1-Large","required":true},{"label":"dossier_json","url":"https://onlylabs.fyi/labs/stepfun/dossier.json","required":true},{"label":"analysis_evidence_json","url":"https://onlylabs.fyi/analysis/stepfun/evidence.json","required":true},{"label":"topic_signals_json","url":"https://onlylabs.fyi/topics/releases/signals.json?category=neolab","required":false},{"label":"data_radar_json","url":null,"required":false}],"expected_output":["one-paragraph source-grounded interpretation","category-specific implication","confidence and missing evidence","recommended next source to inspect"],"prompt_seed":"Using only the linked onlylabs JSON, captured source context, and cited evidence, analyze StepFun's model signal \"stepfun-ai/NextStep-1-Large\" for neolab strategy."},"semantic_triples":[{"subject":"StepFun","predicate":"published model","object":"stepfun-ai/NextStep-1-Large","text":"StepFun published model stepfun-ai/NextStep-1-Large."},{"subject":"stepfun-ai/NextStep-1-Large","predicate":"is classified as","object":"model signal","text":"stepfun-ai/NextStep-1-Large is classified as model signal."},{"subject":"stepfun-ai/NextStep-1-Large","predicate":"belongs to","object":"releases desk","text":"stepfun-ai/NextStep-1-Large belongs to releases desk."},{"subject":"stepfun-ai/NextStep-1-Large","predicate":"has evidence coverage","object":"1 captured evidence page","text":"stepfun-ai/NextStep-1-Large has evidence coverage 1 captured evidence page."},{"subject":"stepfun-ai/NextStep-1-Large","predicate":"has captured page count","object":"1","text":"stepfun-ai/NextStep-1-Large has captured page count 1."},{"subject":"stepfun-ai/NextStep-1-Large","predicate":"has readable page count","object":"1","text":"stepfun-ai/NextStep-1-Large has readable page count 1."},{"subject":"stepfun-ai/NextStep-1-Large","predicate":"has related signal count","object":"6","text":"stepfun-ai/NextStep-1-Large has related signal count 6."},{"subject":"stepfun-ai/NextStep-1-Large","predicate":"has analysis playbook objective","object":"Turn model cards, repository releases, and launch artifacts into a current view of what shipped and what changed.","text":"stepfun-ai/NextStep-1-Large has analysis playbook objective Turn model cards, repository releases, and launch artifacts into a current view of what shipped and what changed.."},{"subject":"stepfun-ai/NextStep-1-Large","predicate":"has source host","object":"huggingface.co","text":"stepfun-ai/NextStep-1-Large has source host huggingface.co."},{"subject":"stepfun-ai/NextStep-1-Large","predicate":"has lab","object":"StepFun","text":"stepfun-ai/NextStep-1-Large has lab StepFun."},{"subject":"stepfun-ai/NextStep-1-Large","predicate":"has signal desk","object":"releases","text":"stepfun-ai/NextStep-1-Large has signal desk releases."},{"subject":"stepfun-ai/NextStep-1-Large","predicate":"has source host","object":"huggingface.co","text":"stepfun-ai/NextStep-1-Large has source host huggingface.co."},{"subject":"stepfun-ai/NextStep-1-Large","predicate":"has task","object":"text-to-image","text":"stepfun-ai/NextStep-1-Large has task text-to-image."},{"subject":"stepfun-ai/NextStep-1-Large","predicate":"has license","object":"apache-2.0","text":"stepfun-ai/NextStep-1-Large has license apache-2.0."},{"subject":"stepfun-ai/NextStep-1-Large","predicate":"has library","object":"transformers","text":"stepfun-ai/NextStep-1-Large has library transformers."},{"subject":"stepfun-ai/NextStep-1-Large","predicate":"has params","object":"15B","text":"stepfun-ai/NextStep-1-Large has params 15B."},{"subject":"stepfun-ai/NextStep-1-Large","predicate":"has downloads","object":"62","text":"stepfun-ai/NextStep-1-Large has downloads 62."}]},"intelligence":{"signal_desk":"releases","answer":"StepFun published stepfun-ai/NextStep-1-Large. This model signal is evidence of what shipped on model infrastructure and how the release is positioned. 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charset=utf-8","capture_method":"plain","fetched_at":"2026-06-11T02:50:37.671164+00:00","bytes":3666,"raw_path":"719be302b57aa1eadb58b5dd4d69889701ecb76d98e0054988f2bb915a99ef22.md","content_hash":"fe0c644de058d1b5ebea9f596f6f6e7f606a0fb0ccf05ecb16b2dc99b19f51e8","excerpt_chars":1200,"truncated":true,"excerpt":"--- license: apache-2.0 pipeline_tag: text-to-image library_name: transformers --- NextStep-1: Toward Autoregressive Image Generation with Continuous Tokens at Scale [Homepage](https://stepfun.ai/research/en/nextstep1)&nbsp; | [GitHub](https://github.com/stepfun-ai/NextStep-1)&nbsp; | [Paper](https://arxiv.org/abs/2508.10711)&nbsp; We introduce **NextStep-1**, a 14B autoregressive model paired with a 157M flow matching head, training on discrete text tokens and continuous image tokens with next-token prediction objectives. **NextStep-1** achieves state-of-the-art performance for autoregressive models in text-to-image generation tasks, exhibiting strong capabilities in high-fidelity image synthesis. <div align='center'> <img src=\"assets/teaser.jpg\" class=\"interpolation-image\" alt=\"arch.\" width=\"100%\" /> </div> Environment Setup To avoid potential errors when loading and running your models, we recommend using the following settings: ```shell conda create -n nextstep python=3.11 -y conda activate nextstep pip install uv # optional GIT_LFS_SKIP_SMUDGE=1 git clone https://huggingface.co/stepfun-ai/NextStep-1-Large && cd NextStep-1-Large uv pip install -r requirements.txt hf download..."},"evidence_pages":[{"url":"https://huggingface.co/stepfun-ai/NextStep-1-Large/raw/main/README.md","final_url":"https://huggingface.co/stepfun-ai/NextStep-1-Large/raw/main/README.md","title":"stepfun-ai/NextStep-1-Large model card","http_status":200,"content_type":"text/plain; charset=utf-8","capture_method":"plain","fetched_at":"2026-06-11T02:50:37.671164+00:00","bytes":3666,"raw_path":"719be302b57aa1eadb58b5dd4d69889701ecb76d98e0054988f2bb915a99ef22.md","content_hash":"fe0c644de058d1b5ebea9f596f6f6e7f606a0fb0ccf05ecb16b2dc99b19f51e8","excerpt_chars":1200,"truncated":true,"excerpt":"--- license: apache-2.0 pipeline_tag: text-to-image library_name: transformers --- NextStep-1: Toward Autoregressive Image Generation with Continuous Tokens at Scale [Homepage](https://stepfun.ai/research/en/nextstep1)&nbsp; | [GitHub](https://github.com/stepfun-ai/NextStep-1)&nbsp; | [Paper](https://arxiv.org/abs/2508.10711)&nbsp; We introduce **NextStep-1**, a 14B autoregressive model paired with a 157M flow matching head, training on discrete text tokens and continuous image tokens with next-token prediction objectives. **NextStep-1** achieves state-of-the-art performance for autoregressive models in text-to-image generation tasks, exhibiting strong capabilities in high-fidelity image synthesis. <div align='center'> <img src=\"assets/teaser.jpg\" class=\"interpolation-image\" alt=\"arch.\" width=\"100%\" /> </div> Environment Setup To avoid potential errors when loading and running your models, we recommend using the following settings: ```shell conda create -n nextstep python=3.11 -y conda activate nextstep pip install uv # optional GIT_LFS_SKIP_SMUDGE=1 git clone https://huggingface.co/stepfun-ai/NextStep-1-Large && cd NextStep-1-Large uv pip install -r requirements.txt hf download..."}],"related_signals":[{"id":"75371011-2872-44b9-bf60-c41fb2e2f0fb","url":"https://onlylabs.fyi/signals/75371011-2872-44b9-bf60-c41fb2e2f0fb","source_url":"https://huggingface.co/stepfun-ai/Step-3.7-Flash","title":"stepfun-ai/Step-3.7-Flash","context":null,"kind":{"key":"model_released","label":"Model"},"org":{"slug":"stepfun","name":"StepFun","category":"neolab"},"occurred_at":"2026-05-23T02:13:46+00:00","first_seen_at":"2026-06-06T01:49:42.562564+00:00","date_source":"source"},{"id":"1a84a279-2a4f-4253-80c9-4f07acd82b3f","url":"https://onlylabs.fyi/signals/1a84a279-2a4f-4253-80c9-4f07acd82b3f","source_url":"https://huggingface.co/stepfun-ai/Step-3.5-Flash-Base","title":"stepfun-ai/Step-3.5-Flash-Base","context":null,"kind":{"key":"model_released","label":"Model"},"org":{"slug":"stepfun","name":"StepFun","category":"neolab"},"occurred_at":"2026-03-02T16:17:50+00:00","first_seen_at":"2026-06-06T01:49:42.562564+00:00","date_source":"source"},{"id":"65659b12-3d4e-4cb7-96f5-783dc1bc2372","url":"https://onlylabs.fyi/signals/65659b12-3d4e-4cb7-96f5-783dc1bc2372","source_url":"https://huggingface.co/stepfun-ai/Step-3.5-Flash-Base-Midtrain","title":"stepfun-ai/Step-3.5-Flash-Base-Midtrain","context":null,"kind":{"key":"model_released","label":"Model"},"org":{"slug":"stepfun","name":"StepFun","category":"neolab"},"occurred_at":"2026-03-02T09:49:21+00:00","first_seen_at":"2026-06-06T01:49:42.562564+00:00","date_source":"source"},{"id":"59a33bc4-341e-4c3e-8230-749ae55f0530","url":"https://onlylabs.fyi/signals/59a33bc4-341e-4c3e-8230-749ae55f0530","source_url":"https://huggingface.co/stepfun-ai/NextStep-1.1-Pretrain-256px","title":"stepfun-ai/NextStep-1.1-Pretrain-256px","context":null,"kind":{"key":"model_released","label":"Model"},"org":{"slug":"stepfun","name":"StepFun","category":"neolab"},"occurred_at":"2026-02-16T06:26:39+00:00","first_seen_at":"2026-06-06T01:49:42.562564+00:00","date_source":"source"},{"id":"8d249566-8324-459c-a4ba-999588e66894","url":"https://onlylabs.fyi/signals/8d249566-8324-459c-a4ba-999588e66894","source_url":"https://huggingface.co/stepfun-ai/Step3-VL-10B-FP8","title":"stepfun-ai/Step3-VL-10B-FP8","context":null,"kind":{"key":"model_released","label":"Model"},"org":{"slug":"stepfun","name":"StepFun","category":"neolab"},"occurred_at":"2026-02-02T06:58:16+00:00","first_seen_at":"2026-06-06T01:49:42.562564+00:00","date_source":"source"},{"id":"8dfff472-9670-4ad2-b0b3-3e52cad3178f","url":"https://onlylabs.fyi/signals/8dfff472-9670-4ad2-b0b3-3e52cad3178f","source_url":"https://huggingface.co/stepfun-ai/Step-3.5-Flash","title":"stepfun-ai/Step-3.5-Flash","context":null,"kind":{"key":"model_released","label":"Model"},"org":{"slug":"stepfun","name":"StepFun","category":"neolab"},"occurred_at":"2026-02-01T08:03:45+00:00","first_seen_at":"2026-06-06T01:49:42.562564+00:00","date_source":"source"}]}