1. Botpress AI
Botpress · Quebec City · AI agent & LLM development platforms · 4.5/5
AI agent platform.
Free plan
Free plan available
AI agent & LLM development platforms · Alternatives
Best Stack AI alternatives in India (2027)
Stack AI is an ai agent & llm development platforms product from Stack AI, Cambridge, priced at Free plan with a free plan. We compared 20 alternatives on published price, free plan, platforms and made-in-India support: 17 have a free plan, 3 are built in India.
Quick answer
The closest alternatives to Stack AI are Botpress AI (Free plan), Braintrust (Free plan), Modal (Free plan), Jina AI (Free plan) and Guardrails AI (Free plan). Botpress AI is the top-ranked option with a free plan.
Why businesses look for a Stack AI alternative
Indian support and GST
Stack AI is built in United States. 3 alternatives are made in India, where GST, TDS and UPI are usually handled natively and support runs on IST.
Stack AI alternatives compared
Ranked by how closely each product matches Stack AI's category, pricing model, platforms and business size, then by rating. Prices exclude GST.
| # | Software | Starting price | Free plan | Platforms | Made in India | Rating | Compare |
|---|---|---|---|---|---|---|---|
| — | Stack AI (current) | Free plan | Yes | Web | No | 4.4/5 | — |
| 1 | Botpress AI | Free plan | Yes | Web | No | 4.5/5 | |
| 2 |  Braintrust | Free plan | Yes | Web | No | 4.3/5 | |
| 3 |  Modal | Free plan | Yes | Web | No | 4.3/5 | |
| 4 |  Jina AI | Free plan | Yes | Web | No | 4.3/5 | |
| 5 |  Guardrails AI | Free plan | Yes | Web | No | 4.3/5 | |
| 6 |  Wysa | Free plan | Yes | Web | Yes | 4.4/5 | |
| 7 |  H2O.ai | Free plan | Yes | Web | No | 4.3/5 | |
| 8 |  KNIME | Free plan | Yes | Web | No | 4.3/5 | |
| 9 |  Mindsdb | Free plan | Yes | Web | No | 4.2/5 | |
| 10 |  Portkey | Free plan | Yes | Web | Yes | 4.5/5 | |
| 11 |  Dust | Free plan | Yes | Web | No | 4.2/5 | |
| 12 |  Semantic Kernel | Free | Yes | Web | No | 4.5/5 | |
| 13 |  Vercel AI SDK | Free | Yes | Web | No | 4.5/5 | |
| 14 |  Pinchy | Free plan | Yes | Web | No | 4.2/5 | |
| 15 |  Datify | Free plan | Yes | Web | No | 4.1/5 | |
| 16 |  Lyzr | $0.08 per agent run (managed cloud); $0.03 per agent run (VPC/on-prem) | No | Web | No | 3.9/5 | |
| 17 |  n8n AI | Free plan | Yes | Web | No | 4.4/5 | |
| 18 |  Fluid AI | On request | No | Web | Yes | 4.1/5 | |
| 19 |  OpenAI API | Pay as you go | No | Web | No | 4.4/5 | |
| 20 |  Hugging Face | Free plan | Yes | Web | No | 4.5/5 |
Top 10 Stack AI alternatives in detail
Free plan
Free plan available
3. Modal
Modal · New York · AI agent & LLM development platforms · 4.3/5
Serverless AI infrastructure.
Free plan
Free plan available
4. Jina AI
Jina AI · Berlin · AI agent & LLM development platforms · 4.3/5
Embeddings and search foundation.
Free plan
Free plan available
5. Guardrails AI
Guardrails · Menlo Park · AI agent & LLM development platforms · 4.3/5
LLM output validation.
Free plan
Free plan available
6. Wysa
Wysa · Bengaluru · AI agent & LLM development platforms · 4.4/5
AI mental health companion built in Bengaluru.
Free plan
Free plan available
Compared with Stack AI
- Built in India (Bengaluru)
7. H2O.ai
H2O.ai · Mountain View · AI agent & LLM development platforms · 4.3/5
AI platform with Indian founder.
Free plan
Free plan available
Free plan
Free plan available
Compared with Stack AI
- Open source
Free plan
Free plan available
10. Portkey
Portkey · Bengaluru · AI agent & LLM development platforms · 4.5/5
AI gateway and observability built in Bengaluru.
Free plan
Free plan available
Compared with Stack AI
- Built in India (Bengaluru)
Stack AI alternatives by what you need
Free Stack AI alternatives
Indian alternatives to Stack AI
How to choose a Stack AI alternative
- Start with a hosted model API and a simple RAG setup; add orchestration when workflows grow.
- Track cost per request early.
- Check data residency for sensitive data.
Stack AI alternatives — FAQs
What is the best alternative to Stack AI in 2027?+
The closest matches to Stack AI on App Advisor are Botpress AI (Free plan), Braintrust (Free plan), Modal (Free plan). They are ranked by how closely their category, pricing model, platforms and target business size match Stack AI, then by rating. The best choice depends on your team size and budget.
Is there a free alternative to Stack AI?+
Yes. 17 of the 20 alternatives listed have a free plan or are free: Botpress AI (Free plan), Braintrust (Free plan), Modal (Free plan). Free plans usually cap users, records or transactions, so check the limits against your monthly volume.
Is there an Indian alternative to Stack AI?+
Yes. 3 alternatives are built in India, including Wysa (Free plan), Portkey (Free plan), Fluid AI (On request). Indian products usually handle GST, TDS and UPI natively and bill in rupees.
Stack AI vs Botpress AI: which is better?+
Botpress AI is the closest match to Stack AI in our catalogue. Compare them side by side before you book a demo.
How were these Stack AI alternatives chosen?+
Every product listed sits in ai agent & llm development platforms or a category Stack AI also covers, and Stack AI's own products are excluded. Prices, free plans and platforms come from each vendor's official website. App Advisor does not sell any of this software.
Free shortlist
Not sure which Stack AI alternative fits?
Tell us your team size and budget and we'll send a shortlist of three.
Related alternatives
Botpress AI alternativesBraintrust alternativesModal alternativesJina AI alternativesGuardrails AI alternativesWysa alternativesH2O.ai alternativesKNIME alternativesMindsdb alternativesPortkey alternativesDust alternativesSemantic Kernel alternativesAll ai agent & llm development platforms alternativesBrowse all alternatives