Quant Data vs LangAlpha
By Jay Rocco, Chief Editor, FullStack Alpha. Updated . Prices checked on each vendor's own site.
Quick answer
Pick Quant Data for MCP / AI connector. Pick LangAlpha for AI chat assistant plus fundamentals.
Key differences
- Cheaper paid plan: LangAlpha ($62.50/mo vs $20/mo)
- Free plan: LangAlpha (LangAlpha has one, Quant Data does not)
- Broader feature set: LangAlpha (5 vs 8 core capabilities)
- AI chat assistant: LangAlpha (Only LangAlpha has it)
- MCP / AI connector: Quant Data (Only Quant Data has it)
- Mobile app: Quant Data (Only Quant Data has it)
Pick Quant Data if
- You want it inside Claude or ChatGPT
- Options order flow
- Dealer gamma positioning
- Dark pool tracking
Pick LangAlpha if
- You want to ask an AI questions in plain English
- You dig into financials and valuation
- Agent-style stock research
- Citing filings and transcripts
Side by side
| Feature | Quant Data | LangAlpha |
|---|---|---|
| Starting price | From $62.50/mo | Free, paid from $20/mo |
| Free plan | No | Yes |
| Alerts | Yes | Yes |
| AI chat assistant | No | Yes |
| News and sentiment | Yes | Yes |
| Fundamentals | No | Yes |
| Earnings calls | No | Yes |
| Insider and Congress trades | No | Yes |
| Options analytics | Yes | Yes |
| API access | Yes | Yes |
| MCP / AI connector | Yes | No |
| Mobile app | Yes | No |
Plans
Quant Data
- Monthly: $74.99/mo
- Annual: $62.50/mo billed yearly
LangAlpha
- Free: Free, 1,000 credits/mo
- Plus: $20/mo
- Pro: $40/mo
- Max: $100/mo and up
Questions people ask
What is the main difference between Quant Data and LangAlpha?
Pick Quant Data for MCP / AI connector. Pick LangAlpha for AI chat assistant plus fundamentals.
Which is cheaper, Quant Data or LangAlpha?
LangAlpha has the cheaper paid plan: $62.50/mo for Quant Data vs $20/mo for LangAlpha (monthly equivalent, checked Oct 2026).
Do Quant Data or LangAlpha have a free plan?
Only LangAlpha has a free plan.
Which is better for beginners?
Both target advanced users. Start with whichever has the free plan or trial so you can test before you pay.
Which has better AI features?
They are level on AI depth (2 AI features each). Quant Data: news and sentiment, MCP / AI connector. LangAlpha: AI chat assistant, news and sentiment.
Can I connect Quant Data or LangAlpha to ChatGPT or Claude?
Quant Data offers an MCP server or official AI connector.
Is Quant Data or LangAlpha better for active trading?
They are about even on active-trading features (alerts, scanning, signals and charts).
Should I use both Quant Data and LangAlpha?
It can make sense. They overlap on only 4 core features, so one can fill gaps the other leaves.