{"schema_version":"onlylabs.public_signal.v1","title":"StepFun Model: stepfun-ai/Step1X-Edit-v1p2","description":"StepFun model signal with public source context, captured evidence pages, related signals, and category-scoped analysis context.","url":"https://onlylabs.fyi/signals/0842b075-b280-4499-a41e-710c72687b83","json_url":"https://onlylabs.fyi/signals/0842b075-b280-4499-a41e-710c72687b83/signal.json","generated_at":"2026-06-11T02:49:50.75+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/0842b075-b280-4499-a41e-710c72687b83","signal_json":"https://onlylabs.fyi/signals/0842b075-b280-4499-a41e-710c72687b83/signal.json","source":"https://huggingface.co/stepfun-ai/Step1X-Edit-v1p2","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/Step1X-Edit-v1p2. 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Nov 26, 2025: 👋 We release [Step1X-Edit-v1p2](https://huggingface.co/stepfun-ai/Step1X-Edit-v1p2) (referred to as **ReasonEdit-S** in the paper), a native reasoning edit model with better performance on KRIS-Bench and GEdit-Bench. Technical report can be found [here](https://arxiv.org/abs/2511.22625). <table> <thead> <tr> <th rowspan=\"2\">Models</th> <th colspan=\"3\"> <div align=\"center\">GEdit-Bench</div> </th> <th colspan=\"4\"> <div align=\"center\">Kris-Bench</div> </th> </tr> <tr> <th>G_SC⬆️</th> <th>G_PQ⬆️ </th> <th>G_O⬆️</th> <th>FK⬆️</th> <th>CK⬆️</th> <th>PK⬆️ </th> <th>Overall⬆️</th> </tr> </thead> <tbody> <tr> <td>Flux-Kontext-dev </td> <td>7.16</td> <td>7.37</td> <td>6.51</td> <td>53.28</td> <td>50.36</td> <td>42.53</td> <td>49.54</td> </tr> <tr> <td>Qwen-Image-Edit-2509 </td> <td>8.00</td> <td>7.86</td> <td>7.56</td> <td>61.47</td> <td>56.79</td> <td>47.07</td> <td>56.15</td> </tr> <tr> <td>Step1X-Edit v1.1 </td> <td>7.66</td> <td>7.35</td> <td>6.97</td> <td>53.05</td> <td>54.34</td> <td>44.66</td> <td>51.59</td> </tr> <tr> <td>Step1x-edit-v1p2-preview </td>..."},"evidence_pages":[{"url":"https://huggingface.co/stepfun-ai/Step1X-Edit-v1p2/raw/main/README.md","final_url":"https://huggingface.co/stepfun-ai/Step1X-Edit-v1p2/raw/main/README.md","title":"stepfun-ai/Step1X-Edit-v1p2 model card","http_status":200,"content_type":"text/plain; charset=utf-8","capture_method":"plain","fetched_at":"2026-06-11T02:49:50.75+00:00","bytes":5411,"raw_path":"0df2292129b70ff8e357a0ada33a583f913601629f69452e3361c9b55b403791.md","content_hash":"326927090081b995a1d19a8345c6b5850199fce8ca57b1852a1e2aa389249cc3","excerpt_chars":1200,"truncated":true,"excerpt":"--- license: apache-2.0 language: - en - zh pipeline_tag: image-to-image library_name: diffusers --- 🔥🔥🔥 News!! Nov 26, 2025: 👋 We release [Step1X-Edit-v1p2](https://huggingface.co/stepfun-ai/Step1X-Edit-v1p2) (referred to as **ReasonEdit-S** in the paper), a native reasoning edit model with better performance on KRIS-Bench and GEdit-Bench. Technical report can be found [here](https://arxiv.org/abs/2511.22625). <table> <thead> <tr> <th rowspan=\"2\">Models</th> <th colspan=\"3\"> <div align=\"center\">GEdit-Bench</div> </th> <th colspan=\"4\"> <div align=\"center\">Kris-Bench</div> </th> </tr> <tr> <th>G_SC⬆️</th> <th>G_PQ⬆️ </th> <th>G_O⬆️</th> <th>FK⬆️</th> <th>CK⬆️</th> <th>PK⬆️ </th> <th>Overall⬆️</th> </tr> </thead> <tbody> <tr> <td>Flux-Kontext-dev </td> <td>7.16</td> <td>7.37</td> <td>6.51</td> <td>53.28</td> <td>50.36</td> <td>42.53</td> <td>49.54</td> </tr> <tr> <td>Qwen-Image-Edit-2509 </td> <td>8.00</td> <td>7.86</td> <td>7.56</td> <td>61.47</td> <td>56.79</td> <td>47.07</td> <td>56.15</td> </tr> <tr> <td>Step1X-Edit v1.1 </td> <td>7.66</td> <td>7.35</td> <td>6.97</td> <td>53.05</td> <td>54.34</td> <td>44.66</td> <td>51.59</td> </tr> <tr> <td>Step1x-edit-v1p2-preview </td>..."}],"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"}]}