kitio.aiHaystack vs AI SDK
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. AI SDK is completely free, while Haystack is freemium.
At a glance
Best for
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Modular pipelines
- Agent building blocks
- Retrieval components
- Many integrations
- Tutorials and cookbook
- Enterprise support option
- Unified provider API
- Streaming responses
- Tool calling
- Structured output
- Built-in fallbacks
- Framework UI hooks
| Feature | Haystack | AI SDK |
|---|---|---|
| Best for | Open-source framework for building production AI agents and RAG | Vercel's open-source TypeScript toolkit for AI apps and agents |
| Category | Coding | Coding |
| Pricing model | Freemium | Free |
| Starting price | See pricing page | Free |
| Free plan | Yes | Yes, fully free |
| Made by | deepset | Vercel |
| Based in | Germany | United States |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
AI SDK is completely free, while Haystack is freemium.
Free plan
Cheapest paid plan
Top plan
Free trial
Prices in USD, checked Oct 29, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
Haystack
- Free and open source
- Modular, swappable components
- Paid enterprise support available
- Requires Python development skills
- Enterprise pricing is not public
- Smaller community than the largest agent frameworks
AI SDK
- Swap model providers easily
- Works across many JS frameworks
- Free and open source
- TypeScript and JavaScript only
- Fast-moving API between versions
- Model usage is billed by providers
Which one should you choose?
Choose Haystack if you want:
- Free and open source
- Modular, swappable components
- Paid enterprise support available
Watch out: requires python development skills.
Choose AI SDK if you want:
- Swap model providers easily
- Works across many JS frameworks
- Free and open source
Watch out: typescript and javascript only.
Haystack vs AI SDK FAQ
What is the difference between Haystack and AI SDK?
Haystack: Open-source framework for building production AI agents and RAG. AI SDK: Vercel's open-source TypeScript toolkit for AI apps and agents. Both are coding tools.
Is Haystack or AI SDK cheaper?
AI SDK is completely free, while Haystack is freemium.
Do Haystack and AI SDK have free plans?
Haystack: Yes. AI SDK: Yes, fully free.
Who makes Haystack?
Haystack is made by deepset, based in Germany.
Who makes AI SDK?
AI SDK is made by Vercel, based in United States.
Which should I choose, Haystack or AI SDK?
Choose Haystack if you value free and open source and modular, swappable components. Choose AI SDK if you value swap model providers easily and works across many js frameworks.