DSPy vs Microsoft Agent Framework
Both are free/open-source alternatives to LangChain. Here's how they stack up — verified facts, no spin.
DSPy
Programming, not prompting — Stanford's optimizer-driven approach.
DSPy (MIT, from Stanford NLP, ~34k stars) replaces hand-tuned prompt strings with something closer to software engineering: you declare what a step takes in and produces (a Signature), compose modules, and let an optimizer compile the best prompts and few-shot examples against your own metric and data. When quality matters and you're tired of prompt whack-a-mole, DSPy turns the tuning into a reproducible build step. It's the most intellectually distinct alternative on this list.
Microsoft Agent Framework
Semantic Kernel + AutoGen, unified — the enterprise agent stack.
Microsoft's Agent Framework 1.0 (April 2026) merged Semantic Kernel's enterprise foundations with AutoGen's multi-agent orchestration into one MIT-licensed SDK for .NET and Python — session state, type safety, middleware, telemetry, and graph-based workflows out of the box. It's the natural LangChain alternative for enterprise teams (especially .NET shops and Azure environments) that want long-term-supported APIs and a vendor standing behind the framework.
Side by side
| DSPy | Microsoft Agent Framework | |
|---|---|---|
| Sovereignty Score | 88 | 80 |
| Open source | Yes | Yes |
| Self-hostable | Yes | Yes |
| Local-first | Yes | No |
| License | MIT | MIT |
| Pricing | Free (MIT) | Free (MIT); integrates naturally (but not exclusively) with Azure services |
DSPy edges it on the Sovereignty Score, but the right pick depends on the trade-offs below.
DSPy
Strengths
- +Optimizes prompts against your metric — reproducibly
- +Declarative modules stay stable as models change underneath
- +Research-grade ideas with a real production following
Trade-offs
- −A genuinely different mental model — real learning curve
- −Optimization runs cost tokens; needs a decent eval set
Microsoft Agent Framework
Strengths
- +Enterprise plumbing included: sessions, telemetry, middleware
- +First-class .NET as well as Python
- +Stable 1.0 APIs with Microsoft LTS backing
Trade-offs
- −Microsoft-governed direction; strong Azure gravity
- −Heavier than needed for small apps
More LangChain head-to-heads
Facts verified 2026-07-16. Licenses and pricing change — spotted something out of date? That's a correction we want.