Bolt.new vs Haystack
A side-by-side comparison of capabilities, autonomy, integrations, and pricing to help you choose.
Short answer: choose Bolt.new if you want prompt, edit, and deploy full-stack web apps in the browser (Supervised agent, freemium); choose Haystack if you want open-source python framework for production rag, search, and agents (Supervised agent, freemium).
| Bolt.new | Haystack | |
|---|---|---|
| What it is | Prompt, edit, and deploy full-stack web apps in the browser | Open-source Python framework for production RAG, search, and agents |
| Type | agent | framework |
| Autonomy | Supervised agent | Supervised agent |
| Pricing | freemium · Free (1M tokens/mo); Pro from $25/mo | freemium |
| Best for | consumers, developers, smb | developers, enterprise |
| Deployment | saas | self-hosted, api |
| Modalities | text, code | text, code, api, image |
| Models | claude, model-agnostic | model-agnostic, open-source |
| Protocols | rest-api | function-calling, mcp, rest-api |
| Integrations | Netlify, Supabase, GitHub, Expo | OpenAI, Anthropic, Hugging Face, Ollama, Qdrant, Weaviate |
| Capabilities | 3 documented | 4 documented |
Bolt.new
- +Full dev environment runs in the browser via WebContainers, with the AI controlling filesystem, terminal, and server
- +Generates true full-stack apps (not just UI) and can deploy via Bolt Cloud
- +No local setup; fast for prototyping and iterating by chatting
- -Token-based usage cost can rise quickly on complex or long-running builds
- -Output needs human review and iteration; it is not a hands-off autonomous engineer
Haystack
- +Mature, explicit, production-oriented architecture with deep RAG and search heritage
- +Broad integrations and an Apache-2.0 license, free to self-host
- +Backed by an established vendor (deepset) with an enterprise tier
- -Python-only
- -The component and pipeline model has a learning curve versus lighter agent SDKs
Which should you choose?
Bolt.new is prompt, edit, and deploy full-stack web apps in the browser, best for consumers, developers, smb. Haystack is open-source python framework for production rag, search, and agents, best for developers, enterprise. The right choice depends on the autonomy level you want, your existing integrations, and your budget, all compared above.