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What is DeepSeek-V4.1-Flash-1017?

DeepSeek-V4.1-Flash-1017 is an open-weight artificial intelligence model developed by DeepSeek for multimodal understanding, advanced reasoning, autonomous agent workflows, and software engineering. Introduced on October 17, 2026, the release updates DeepSeek-V4.1-Flash with improvements in reasoning accuracy, coding capabilities, agent performance, and computational efficiency. The model builds on DeepSeek's mixture-of-experts architecture and supports native visual understanding alongside natural language processing. Its one-million-token context window enables applications to process extensive documents, large code repositories, and long sequences of interactions. Developers can configure reasoning effort and use the model for tasks involving mathematical reasoning, programming, information analysis, and complex problem-solving. Software engineering capabilities include code generation, debugging, repository analysis, automated testing, and implementation of features across existing projects. DeepSeek also trained the model using reinforcement learning with self-feedback to improve its ability to create complete projects, including web applications, interactive games, and 3D environments. Its agentic capabilities support multi-turn conversations, external tool calling, task planning, and integration with automated development environments. DeepSeek reports improvements over the previous version on benchmarks including Terminal-Bench, DeepSWE, ProgramBench, Automation-Bench, and Agents' Last Exam. The model includes reference prompt encoding tools and supports deployment through Hugging Face Transformers, vLLM, SGLang, and compatible inference infrastructure. DeepSeek-V4.1-Flash-1017 is available through the DeepSeek API under the deepseek-flash model identifier and through downloadable model weights licensed under the MIT License.

What is Chat Stream?

Chat Stream provides users with access to two powerful language models created by DeepSeek, highlighting their exceptional performance capabilities. These models, known as DeepSeek V3 and R1, boast an impressive total of 671 billion parameters, with 37 billion activated for each token, and consistently deliver outstanding results on benchmarks like MMLU at 87.1% and BBH at 87.5%. With a generous context window length of 128K, they excel in various applications, including code generation, intricate mathematical calculations, and multilingual processing. They are built on an advanced Mixture-of-Experts (MoE) framework, utilize Multi-head Latent Attention (MLA), and incorporate auxiliary-loss-free load balancing along with a multi-token prediction approach to boost their efficiency. The deployment options are highly adaptable, featuring a web-based chat interface for instant use, straightforward integration into websites via iframes, and dedicated mobile applications available for iOS and Android platforms. Moreover, the models can operate on diverse hardware setups, including NVIDIA and AMD GPUs, as well as Huawei Ascend NPUs, facilitating both local inference and cloud deployment. Users enjoy multiple access methods, such as free chat without registration, options for website embedding, mobile app functionality, and an upgraded subscription that provides an ad-free experience while ensuring flexibility and ease of access for everyone. In addition, the versatility of these models allows users to explore a wide range of functionalities tailored to meet varied needs.

Media

Media

No images available

Integrations Supported

Buda
Cheaper Inference
Cline
ClinePass
DeepSeek
DeepSeek Harness
DeepSeek-V4
Novita AI
Offloop
OpenClaw
OpenTag
Oxlo.ai
Reasonix
SnapVee Studio
Together AI
Vercel AI Gateway
ZooClaw

Integrations Supported

DeepSeek R1
DeepSeek-V3

API Availability

Has API

API Availability

Pricing Information

Free
Free Version

Pricing Information

Pricing not provided
Free Version

Supported Platforms

SaaS
Windows
Mac
On-Prem
Linux

Supported Platforms

SaaS

Customer Service / Support

Web-Based Support

Customer Service / Support

Standard Support

Training Options

Documentation Hub

Training Options

Not specified

Company Facts

Organization Name

DeepSeek

Date Founded

2023

Company Location

China

Company Website

deepseek.com

Company Facts

Organization Name

Chat Stream

Date Founded

2023

Company Location

Hong Kong

Company Website

www.chatstream.org

Categories and Features

AI Coding Models

Not specified

AI Models

Not specified

AI Reasoning Models

Not specified

Large Language Models

Not specified

Multimodal Models

Not specified

Open-Weight AI Models

Not specified

Categories and Features

AI Tools

Not specified

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