DSPy vs Mastra: Which is Better in 2026?
Choosing between DSPy and Mastra? Both are popular agent framework tools. Below we compare them on pricing, free tiers, features, and pros & cons so you can pick the right fit for your stack.
Quick verdict
Both DSPy and Mastra are strong agent framework choices. The right pick comes down to your specific feature needs, existing stack, and team preferences. In our catalog, Mastra rates slightly higher (4.6 vs 4.2 out of 5).
DSPy vs Mastra — Side by Side
| DSPy | Mastra | |
|---|---|---|
| Category | Agent Framework | Agent Framework |
| Pricing | Free | Free |
| Starting price | Free tier available | Free tier available |
| Free tier | ||
| Rating | 4.2 | 4.6 |
| Best for | Agent Framework — prompt-optimisation, research | Agent Framework — ai, llm |
Pros & Cons
- Replaces prompt tinkering with measurable optimisation
- Strong research backing (Stanford)
- Composes well with any model provider
- A genuinely different mental model to learn
- Optimisation runs cost tokens
- Best-in-class for TypeScript teams
- Batteries-included (agents, workflows, memory, evals)
- From the experienced Gatsby team
- Strong observability & MCP support
- Younger than Python frameworks
- TypeScript-only ecosystem
Key Features Compared
DSPy
- Declarative signatures
- Automatic prompt optimisation
- Compilers and teleprompters
- Evaluation built in
Mastra
- TypeScript-native agents & workflows
- Memory & semantic recall
- Evals & observability
- MCP tool sharing
- 3,300+ models via providers
Choose DSPy if…
- You want a free tier to validate before paying.
- Replaces prompt tinkering with measurable optimisation
- Strong research backing (Stanford)
- Composes well with any model provider
Choose Mastra if…
- You want a free tier to validate before paying.
- Best-in-class for TypeScript teams
- Batteries-included (agents, workflows, memory, evals)
- From the experienced Gatsby team
Frequently Asked Questions
Is DSPy better than Mastra?⌄
Both DSPy and Mastra are strong agent framework choices. The right pick comes down to your specific feature needs, existing stack, and team preferences. In our catalog, Mastra rates slightly higher (4.6 vs 4.2 out of 5).
What is the difference between DSPy and Mastra?⌄
DSPy — Programs prompts instead of writing them — you define signatures and it optimises. Mastra — Open-source TypeScript agent framework from the Gatsby team — agents, workflows, memory, and observability in one modern stack. Both are agent framework tools; the comparison table above breaks down pricing, free tiers, and what each is best for.
DSPy vs Mastra: which is cheaper?⌄
DSPy pricing: Free. Mastra pricing: Free. Confirm current pricing on each tool's official site, as plans change.
Which is rated higher, DSPy or Mastra?⌄
In our catalog, DSPy rates 4.2 out of 5 and Mastra rates 4.6 out of 5, so Mastra has a slight edge on reviews.
See more options in our guide to the best agent framework tools for startups.
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