DeepSeek-V4-Flash-0731 on Demand: Powerful agent capabilities fully hosted in Switzerland

The Model at a glance:

• Model: DeepSeek-V4-Flash-0731, Open Weights, Mixture-of-Experts architecture.
• Applications: Software development, debugging, agent-based workflows, technical analysis and multi-step reasoning.
• Integration: OpenAI-compatible API, integrated directly into existing applications, development environments and agent systems.
• Operation: Managed service including deployment, monitoring, maintenance and support provided by stepping stone AG.

We are now running DeepSeek-V4-Flash-0731 entirely on Swiss infrastructure. The open-weight model, featuring a mixture-of-experts architecture, combines high capacity with efficient inference and, in release 0731, focuses on agent capabilities. Access is via an OpenAI-compatible API that can be integrated directly into existing applications, development environments and agent systems. The model is particularly relevant for teams wishing to tackle complex technical workloads with sophisticated AI without having to share their data with proprietary US platforms.

Release 0731 of DeepSeek-V4-Flash focuses specifically on agent capabilities: when combined with an agent harness and appropriate tools the model can request tool execution, processes multi-step tasks, analyses interim results and can propose subsequent steps within an agent workflow. DeepSeek reports strong performance in coding agent, terminal and tool-use benchmarks. The Mixture-of-Experts architecture allows the model’s high overall capacity to be combined with efficient inference, as only a portion of the model is activated per token. 

stepping stone hosts the model entirely on Swiss infrastructure. Deployment, monitoring, maintenance and support are handled by the team in Bern. Model inference takes place in Switzerland. When external tools or services are connected, those integrations determine where any additional processing occurs.

DeepSeek-V4-Flash-0731 is particularly well-suited to demanding software development workflows. The model analyses existing code, assists with debugging and supports multi-stage development tasks. When used in conjunction with an agent harness and appropriate tools, it can work across repositories, request file changes, test execution and use the results to guide subsequent steps. Via Tool Calling, it interacts with external functions and systems, evaluates interim results and work across repositories, request file changes and test execution and use the results to guide subsequent steps. The model also offers a high-capacity option for technical analyses, structured problem-solving and complex multi-step reasoning.

→ Find out more about DeepSeek-V4-Flash-0731