# DSPy 3.4.0 原生支持 Jev 与 System One 模型

- 来源：elvis (@omarsar0)
- 发布时间：2026-09-26 00:57
- AIHOT 分数：47
- AIHOT 链接：https://aihot.news/items/cmuh7vel607jjro55rdyowkhu
- 原文链接：https://x.com/omarsar0/status/2103529287676567888

## AI 摘要

DSPy 3.4.0 发布，原生支持 Jev 和 System One 模型，并新增专为置信度校准输出设计的优化器 ReAnchor。Elvis Saravia 称用 Jev 构建自定义 harness 在 guardrails、路由和验证器上效果良好，并看好其在技能结构化、工具调用、动态工作流与上下文工程中的应用。

## 正文

Pay attention to System One models if you are building custom harnesses and agentic workflows.

Great to see DSPy integrate Jev and now support System One models for calibrating agentic workflows.

I'm amazed at how naturally System One models like Jev fit into these frameworks.

I am using Jev to build my own custom harnesses like here: https://academy.dair.ai/resources/jev-decisions-in-a-pi-sdk-harness

So far, I've had great success with guardrails, routing, and verifiers.

However, I am starting to see other interesting applications in other parts of the agent harness, like:

structuring skills and better optimizing them
more efficient tool calling for agents
dynamic workflows (i.e., dynamically generating harnesses with orchestrator + subagents patterns) that leverage Jev-like models for more optimally structuring outputs/information traveling between these workflows
enhance coordination between agents
dynamic and smarter loading (like tools and MCP) of system prompts, and really, all areas of context engineering that benefit from smarter and faster decision-making capabilities
RLM + System One Models

And the list goes on and on. Just a wonderful time to explore new ways to work with agents.

### 引用推文

> Isaac Miller 🧩：DSPy 3.4.0 was just released! This release includes native support for Jev and System one models inside of DSPy! Use it with compatible signatures. This release...