StepFun
Step 5 Preview
最大上下文
1M
最大輸出
1M
發布日期
暫無
step-3.7-flashStep 3.7 Flash 是 StepFun 推出的高效多模態混合專家(MoE)模型,專為生產級智慧體和開發者工作負載而設計。憑藉原生的文字和影像理解、256K 上下文視窗以及靈活推理能力,它非常適合編碼、視覺和文件分析、工具呼叫、搜尋增強任務以及複雜的多步驟智慧體工作流程。其稀疏的 198B 架構每個 token 僅啟用約 11B 參數,在強大推理和多模態效能與高效推理之間取得平衡。
上下文視窗
256K Token
最大輸出
256K Token
發布日期
2026年5月29日
模態
| 輸入價格 | 輸出價格 | 快取讀取 |
|---|---|---|
| $0.2/M | $1.15/M | $0.04/M |
推理
工具呼叫
Temperature 參數
附件
知識庫
Endpoint 協議
Step 3.7 Flash 結合原生圖片理解、可選擇的推理深度與高吞吐量 Agent 程式開發能力,適合高頻率的正式工作負載。
專用視覺編碼器讓模型能理解螢幕截圖、介面版面、圖示、圖表與其他圖片輸入。
開發者可選擇低、中、高推理等級,在回應速度與任務所需的分析深度間取得平衡。
稀疏架構針對快速正式推論設計,同時支援多檔案程式開發與長時間 Agent 工作流程。
Step 3.7 Flash 適合螢幕截圖轉程式碼、程式碼庫除錯、金融文件分析與多來源研究 Agent。
理解 UI 螢幕截圖或線框圖,並產生符合其版面與元件的結構化前端程式碼。
追蹤多個檔案間的行為、根據問題報告定位缺陷,並產生可透過測試檢查的修補程式。
執行迭代搜尋、比較不同來源的依據,並整合文字、圖片與資訊密集報告中的已核實內容。
import OpenAI from "openai"
const client = new OpenAI({
apiKey: process.env.TOKENHUB_API_KEY,
baseURL: "https://us-api.tokenhub.com/v1",
})
const result = await client.chat.completions.create({})
console.log(result.choices[0]?.message?.content)Step 3.7 Flash
| 指數分數 | ||
|---|---|---|
| Artificial Analysis 綜合能力指數 | Artificial Analysis 綜合能力評分 | 30.9 |
| Artificial Analysis 程式碼能力指數 | Artificial Analysis 軟體任務評分 | 39.6 |
指標來源 Artificial Analysis
了解透過 TokenHub 呼叫 StepFun API 使用 Step 3.7 Flash 時的多模態能力、Agent 工作流程、價格、上下文限制和接入方式。
Step 3.7 Flash 是階躍星辰(StepFun)推出的高效多模態混合專家模型,面向生產級 Agent 和開發者工作負載。它結合文字與圖像理解、256K 上下文視窗和彈性推理能力,可用於程式設計、文件分析、工具呼叫和多步驟任務。
Step 3.7 Flash 適合回應速度要求較高的程式設計助手、視覺或文件分析、搜尋增強研究、結構化擷取和會呼叫工具的 Agent 工作流程。當一項任務同時需要多模態輸入與多步驟推理,而不只是一次純文字問答時,它更值得優先評估。
該模型面向原生文字與圖像理解、彈性推理和以工具為中心的 Agent 任務而設計。接入前請以 TokenHub 目前模型頁為準,確認你的帳戶可用的具體輸入格式、支援端點、請求結構和工具呼叫行為。
256K 上下文可讓 Step 3.7 Flash 處理較大的文件、視覺材料、檢索證據和多步驟任務狀態。其稀疏架構旨在平衡能力與推理效率,但實際延遲和成本仍取決於輸入大小、輸出長度、推理設定以及 TokenHub 目前價格。
先建立 TokenHub API Key,在模型目錄中選擇目前顯示的 Step 3.7 Flash 模型 ID,再按照模型頁發布的端點和請求範例發起呼叫。若應用包含圖像輸入、串流輸出或工具呼叫,請在傳送正式流量前查看最新文件。
應以 TokenHub 目前價格表為準,而不是引用舊文章中的固定數字。根據典型輸入與輸出 token、可用時的快取使用、請求量,以及每個工作流程中的圖像或長上下文內容來估算成本;在確定正式預算前,先用具代表性的提示詞進行測試。
當工作負載同時涉及圖像或文件理解、程式設計或研究、工具呼叫和多步驟 Agent 執行,並且你重視推理效率時,可優先評估 Step 3.7 Flash。對於簡單純文字請求,應比較更小、成本更低的模型;對於高風險任務,應在相同提示詞、延遲目標和預算下測試 Step 3.7 Flash 與其他候選模型。
透過一個 API Key 接入 Step 3.7 Flash 與更多 AI 模型。
Step-3.7-flash 媒體與示範
精選的 step-3.7-flash 公開公告、測試和社群討論。
X (Twitter)
StepFun ·
展開全文
⚡️ Step 3.7 Flash is here: The new frontier is agent efficiency. #1 ClawEval-1.1 (67.1), #1 SimpleVQA Search (79.2), #2 SWE-PRO (56.3), 95.3 on V* Python. Open weights under Apache 2.0. Built for agentic, coding, search, and multimodal workflows — balancing speed, cost, and reliable execution. - 400 TPS. 198B sparse MoE, ~11B active. 256K context, 3 reasoning levels. - Understands UIs, charts, docs, images — then writes code or calls tools to act on what it sees. - Web + visual search reaches further: more sources, deeper follow-up. - Reliable tool use — less drift, fewer broken toolcalls. 98%+ on τ²-bench across all difficulty levels. - Works with Claude Code, KiloCode, Hermes Agent, OpenClaw, and protocols like MCP. - Runs locally on Mac Studio M4 Max, DGX Spark, AMD AI Max+ 395. GitHub: https://t.co/kqlZkVIRHv HuggingFace: https://t.co/qqceCrgPiw GGUF: https://t.co/rR6XrnymWG ModelScope: https://t.co/wney6Tzvqy API: https://t.co/RvHWzRG7Fu Blog: https://t.co/BxDiajiQ5G
StepFun ·
Step 3.7 Flash, free for 30 days for Hermes Agent users. What could possibly go wrong? 🍿 Thanks @NousResearch for making it happen. Can’t wait to see what Hermes users build!
查看原文StepFun ·
Want to try Step 3.7 Flash without touching a line of code? It now has a hosted demo — open it right in your browser, no install needed. Built on Gradio by @_akhaliq 🙏, now live in our Hugging Face org. Give it a try 👇
查看原文Reddit
StepFun Releases Step 3.7 Flash: A 198B MoE Vision-Language Model for Coding Agents and Search Workflows
techlatest_net ·
展開全文
StepFun today released Step 3.7 Flash (https://github.com/stepfun-ai/Step-3.7-Flash), a multimodal Mixture-of-Experts model targeting agentic use cases. It adds native vision input and improved tool-use reliability over Step 3.5 Flash. Step 3.7 Flash [ModelPage]: https://static.stepfun.com/blog/step-3.7-flash/ [HuggingFace]: BF16: https://huggingface.co/stepfun-ai/Step-3.7-Flash/ FP8: https://huggingface.co/stepfun-ai/Step-3.7-Flash-FP8 NVFP4: https://huggingface.co/stepfun-ai/Step-3.7-Flash-NVFP4 GGUF: https://huggingface.co/stepfun-ai/Step-3.7-Flash-GGUF Code Engineering and Professional Baselines r/LocalLLM - StepFun Releases Step 3.7 Flash: A 198B MoE Vision-Language Model for Coding Agents and Search Workflows (https://preview.redd.it/stepfun-releases-step-3-7-flash-a-198b-moe-vision-language-v0-2fh1hu88e64h1.png?width=1280&format=png&auto=webp&s=d47b392ea2ef4dbb7acf87816187e563412210ae)
Step 3.7 Flash quants rolling out today
colinrgodsey ·
https://huggingface.co/unsloth/Step-3.7-Flash-GGUF/tree/main It was empty this morning and has been getting less empty throughout the day. I grabbed the UD-IQ4_NL a few hours ago and its been pretty nice so far. EDIT: not trying to steal any thunder, I'm just very excited for this model and the amazing unsloth quants!
https://huggingface.co/unsloth/Step-3.7-Flash-GGUF/tree/main查看原文StepFun 3.7 Flash MTP Bench
westsunset ·
展開全文
This is the StepFun Step-3.7-Flash UD-IQ4_XS main model with the official StepFun MTP Q8_0 draft model, served through a patched llama.cpp Vulkan/RADV build. Host System: AMD Ryzen AI Max+ 395 / Radeon 8060S (gfx1151) Memory: 128 GB unified LPDDR5X BIOS UMA / VRAM: 4 GB UMA dedicated VRAM GTT ceiling: 112 GiB IOMMU: enabled (amd_iommu=on) OS: Ubuntu 25.04 (Plucky) Kernel: 6.18.1-061801-generic Mesa / RADV: Mesa 25.2.8 / RADV ROCm: 7.1.1 baseline; some later rows also reference ROCm 7.2.x runtime libraries Model Main model: StepFun Step-3.7-Flash UD-IQ4_XS Main model size on disk: 95,336,010,208 bytes / 88.79 GiB Main model shards: 3 Draft model: Step-3.7-Flash-MTP-Q8_0.gguf Draft model size: about 3.5 GiB Architecture: step35 Model class: roughly 200B total parameters / about 11B active parameters per token Backend: llama.cpp Vulkan/RADV b9360 with Step-3.7 MTP patch Context used for this bench: 12,288 MTP settings: DRAFT_N=2, PMIN=0.60, UBATCH=512 Latest measured numbers Metric StepFun MTP Non-MTP baseline Change Load to listening ~31 s ~31 s no startup penalty observed Prefill / prompt processing 211.2 tok/s 212.0 tok/s basically flat Decode / token generation 26.0 tok/s 20.4 tok/s +27.5% Normalized wall time, 1150-in/2000-out 82.4 s 103.4 s 20.8% faster Two concurrent requests 19.7 / 19.6 tok/s 17.14 tok/s each +15% per slot Two-slot aggregate 35.7 tok/s ~34 tok/s +5% aggregate Socket power during decode ~73 W ~85 W ~14% lower The main result: MTP materially improves decode speed without hurting prefill. For a roughly 200B-total MoE model, 26 tok/s single-stream on a 128 GB Strix Halo APU is a useful local lane. Draft acceptance The standard decode probe showed: Drafted tokens: 491 Accepted draft tokens: 416 Accepted / drafted: 84.7% Important source note: the summarized bench.json currently has "mtp.acceptance_pct": null. The 84.7% acceptance number comes from the raw tg_probe.json timing counters, not from the aggregate bench.json field. Context against other local lanes These are not quality-equivalent rows, but they help place the speed tier: Model / lane Total / active Quant / path Prefill Decode Qwen 3.6 35B MTP 35B / A3B Q4_K_M, Vulkan MTP not listed here 81.2 tok/s gpt-oss-120b 117B / A5.1B MXFP4, Vulkan 787 tok/s 46.7 tok/s Qwen3-Coder-Next coder MoE UD-Q4_K_XL, Vulkan 723.2 tok/s 44.4 tok/s Qwen 3.5 122B MTP 122B / A10B MXFP4_MOE, Vulkan MTP 332.1 tok/s 26.7 tok/s StepFun 3.7 Flash MTP ~200B / A11B UD-IQ4_XS + Q8 MTP draft 211.2 tok/s 26.0 tok/s StepFun 3.7 Flash plain ~200B / A11B UD-IQ4_XS, no MTP 212.0 tok/s 20.4 tok/s The interesting part is that StepFun MTP lands in the same rough decode tier as Qwen 122B MTP while moving a much larger total-parameter model. Whether that is the best lane depends on whether StepFun's quality is worth spending the 26 tok/s tier on.
YouTube
Step 3.7 Flash First Look & LOCAL Test – A VERY Creative Model!
Bijan Bowen
查看原文Step 3.7 Flash - 198B Open Source Model That Does Everything; Does it Really?
Fahd Mirza
查看原文Step 3.7 Flash: How to build a Fully Autonomous AI Research Agent - Best AI Model for Deep Research
The Metaverse Guy
查看原文