DSPy vs LMQL
Side-by-side comparison of two AI agent tools
Short answer
- LMQL has had no commit in 16 months; DSPy is actively maintained (174 commits in the last 90 days).
- DSPy is growing faster: +831 GitHub stars in the last 30 days vs +9 for LMQL.
- Pick DSPy for: dSPy: The framework for programming—not prompting—language models. Pick LMQL for: a language for constraint-guided and efficient LLM programming.
From GitHub data refreshed daily.
DSPyopen-source
DSPy: The framework for programming—not prompting—language models
LMQLopen-source
A language for constraint-guided and efficient LLM programming.
Metrics
| DSPy | LMQL | |
|---|---|---|
| Stars | 38.5k | 4.2k |
| Star velocity /mo | 831.1578947368421 | 9 |
| Commits (90d) | 174 | 0 |
| Releases (6m) | 7 | 0 |
| Downloads (30d, npm + PyPI) | 5.2M | — |
| Overall score | 0.7450631854973739 | 0.18872827952440435 |
Pros
- +采用编程范式替代提示词工程，提供更稳定可靠的AI系统开发方式
- +内置优化算法能够自动改进提示词和模型权重，实现系统自我优化
- +支持模块化架构，可构建从简单分类器到复杂RAG管道的各种AI应用
- +Native Python integration makes it accessible to existing Python developers while adding powerful LLM capabilities
- +Constraint-based programming with the `where` keyword provides precise control over LLM outputs and behavior
- +Seamless combination of traditional programming logic with LLM reasoning in a single, unified language
Cons
- -相比传统提示词方法有一定学习曲线，需要掌握框架特定的编程概念
- -作为相对新的框架，生态系统和第三方集成可能不如成熟的AI开发工具丰富
- -主要面向有编程经验的开发者，对非技术用户门槛较高
- -As a specialized language, it requires learning new syntax and concepts beyond standard Python programming
- -Limited to LLM-focused use cases, making it less suitable for general-purpose programming tasks
- -Relatively new with 4,161 GitHub stars, indicating a smaller community compared to mainstream programming languages
Use Cases
- •构建企业级RAG（检索增强生成）系统，需要稳定可靠的文档问答能力
- •开发复杂的AI Agent循环系统，处理多步骤推理和决策任务
- •构建大规模分类和内容处理管道，需要高质量输出和可优化性能
- •Building conversational AI applications that require complex logic and constraint-based response generation
- •Creating automated content analysis and generation systems with precise output formatting requirements
- •Developing interactive AI tutoring systems that combine algorithmic assessment with natural language reasoning
FAQ
- Which is more popular, DSPy or LMQL?
- DSPy has more GitHub stars (38,480 vs 4,218).
- Which is more actively developed, DSPy or LMQL?
- DSPy had more commits in the last 90 days (174 vs 0).
- Should I use DSPy or LMQL?
- Compare their capabilities, limitations and "best for" notes above. Both are open source, so trying each on a small task is the fastest way to decide.