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Long Story Video Skill
Turn one idea into a 10s–10min story, with the model writing the script, the prompts and the footage itself.
Ads Video Skill
Produce ads and sales videos from a single brief, with scripts and prompts handled by the model.
3D Science Explainer Video Skill
Turn a science concept into a 3D explainer animation refined through self-feedback.
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deepseek 4.1 flash 1017
DeepSeek 4.1 Flash 1017 delivers a Pareto jump in speed, quality and cost — wish-driven programming that builds games and 3D scenes. Live on web, app and API.
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Why Use the New Flash Model
The Flash model is a Pareto step up: benchmark scores climb, jobs wrap up sooner and answers come back leaner, tuned for end-to-end project building rather than single-shot edits.
- Pareto Performance and CostScores go up on benchmarks, jobs finish sooner and the answers themselves get more compact — gains on quality and cost at once instead of a trade-off.
- Wish-Driven Project BuildingSelf-feedback reinforcement learning carries the model through whole builds — a racing game, a Forbidden City model, a 3D timeline of the ages — not just isolated snippets.
- Open-Source ReleaseThe model ships openly on Hugging Face and ModelScope, so teams can download the weights and self-host the release.
How to Start With the Flash Model
Three routes into the release: the hosted surfaces, the Harness upgrade, and the Search and Fetch endpoints.
Flash Model Capabilities: Search, Fetch and Vision
Search, Fetch, vision inputs and per-request pricing — the pieces that let the model reach live web content and read images.
In-House Search API
The Search API turns a query into structured page results, backed by DeepSeek's own crawler and engine, which handles hundreds of millions of calls a day worldwide.
Fetch API to Markdown
Fetch pulls down one page at a time and hands it back as Markdown, giving agents and RAG pipelines clean live web text to work with.
Vision Image Inputs
The deepseek-flash model takes pictures next to text, so it can caption a photo, pull wording out of a screenshot or read a chart — JPEG, PNG, GIF and WebP all work.
Three Image Delivery Methods
Hand images over as base64 data URLs, public http(s) links or Files API file_ids; inline payloads share a 48 MiB body cap, while uploaded files can reach 64 MiB.
Per-Success Billing
Every 1,000 calls cost $0.75, and you are charged only when a request actually returns something — failures, zero-result searches and timeouts cost nothing.
Harness, CodeBuddy and WorkBuddy
The model is tuned for DeepSeek Harness, Tencent CodeBuddy and WorkBuddy, and server-side Search and Fetch calls stay free for API users until billing begins.
DeepSeek 4.1 Flash 1017 — FAQ
Common questions about the release, its APIs and its open weights.
What is DeepSeek-V4.1-Flash-1017?
It is DeepSeek's newest Flash release: it scores higher on benchmarks, finishes tasks sooner and returns more compact answers, and it is already serving traffic on web, app and API.
How does it compare with the previous version?
Rather than trading quality for cost, it improves both — benchmark scores rise while jobs complete faster and outputs shrink, which is what the Pareto framing means here.
Which tools support the new model?
DeepSeek Harness v0.2.1-rc.1 or later, Tencent CodeBuddy, WorkBuddy and other optimized integrations already work with the model.
Are the Search and Fetch APIs free?
Server-side Search and Fetch calls in Harness, Claude Code and Codex are free for DeepSeek API users for now; billing starts Oct 31, 2026, at 16:00 UTC.
Where can I download the open-source model?
The weights are published on Hugging Face and ModelScope under the DeepSeek-V4.1-Flash-1017 repository names.
What image formats does the vision model support?
Four formats work: JPEG, PNG, GIF and WebP. The model inspects the bytes themselves, so a mislabeled extension or a wrong declared MIME type will not trip it up.
Put the New Flash Model to Work Today
Open the website, app or API to build with the new model, upgrade to DeepSeek Harness v0.2.1-rc.1 or later, and pull the open weights from Hugging Face or ModelScope.