1. Google Vertex AI
Google · Mountain View · AI agent & LLM development platforms · 4.4/5
ML and generative AI platform.
Pay as you go
Free trial
AI agent & LLM development platforms · Alternatives
Best OpenAI API alternatives in India (2027)
OpenAI API is an ai agent & llm development platforms product from OpenAI, San Francisco, priced at Pay as you go. We compared 20 alternatives on published price, free plan, platforms and made-in-India support: 9 have a free plan, 2 are built in India.
Quick answer
The closest alternatives to OpenAI API are Google Vertex AI (Pay as you go), Together AI (Pay as you go), Fireworks AI (Pay as you go), E2E TIR (Pay as you go) and Vapi (Pay as you go). Semantic Kernel is the top-ranked option with a free plan. Published prices in this list start at ₹6,000/month.
Why businesses look for a OpenAI API alternative
There is no free plan
OpenAI API has no free tier. 9 alternatives do, which lets you test with real data before you pay.
Indian support and GST
OpenAI API is built in United States. 2 alternatives are made in India, where GST, TDS and UPI are usually handled natively and support runs on IST.
OpenAI API alternatives compared
Ranked by how closely each product matches OpenAI API'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 |
|---|---|---|---|---|---|---|---|
| — | OpenAI API (current) | Pay as you go | No | Web | No | 4.4/5 | — |
| 1 | Google Vertex AI | Pay as you go | No | Web | No | 4.4/5 | |
| 2 |  Together AI | Pay as you go | No | Web | No | 4.4/5 | |
| 3 |  Fireworks AI | Pay as you go | No | Web | No | 4.4/5 | |
| 4 |  E2E TIR | Pay as you go | No | Web | Yes | 4.5/5 | |
| 5 |  Vapi | Pay as you go | No | Web | No | 4.3/5 | |
| 6 |  Bland AI | Pay as you go | No | Web | No | 4.3/5 | |
| 7 |  Retell AI | Pay as you go | No | Web | No | 4.3/5 | |
| 8 |  Voyage AI | Pay as you go | No | Web | No | 4.2/5 | |
| 9 |  Obviously AI | ₹6,000/mo | No | Web | No | 4.1/5 | |
| 10 |  Semantic Kernel | Free | Yes | Web | No | 4.5/5 | |
| 11 |  Vercel AI SDK | Free | Yes | Web | No | 4.5/5 | |
| 12 |  Botpress AI | Free plan | Yes | Web | No | 4.5/5 | |
| 13 |  Mistral AI Platform | Pay as you go | No | Web | No | 4.3/5 | |
| 14 |  Braintrust | Free plan | Yes | Web | No | 4.3/5 | |
| 15 |  Modal | Free plan | Yes | Web | No | 4.3/5 | |
| 16 |  Jina AI | Free plan | Yes | Web | No | 4.3/5 | |
| 17 |  Guardrails AI | Free plan | Yes | Web | No | 4.3/5 | |
| 18 |  Wysa | Free plan | Yes | Web | Yes | 4.4/5 | |
| 19 |  H2O.ai | Free plan | Yes | Web | No | 4.3/5 | |
| 20 |  Anyscale | Pay as you go | No | Web | No | 4.2/5 |
Top 10 OpenAI API alternatives in detail
2. Together AI
Together · San Francisco · AI agent & LLM development platforms · 4.4/5
Open model inference cloud.
Pay as you go
Free trial
3. Fireworks AI
Fireworks · Redwood City · AI agent & LLM development platforms · 4.4/5
Fast inference for open models.
Pay as you go
Free trial
4. E2E TIR
E2E Networks · New Delhi · AI agent & LLM development platforms · 4.5/5
Indian GPU cloud and AI platform.
Pay as you go
Free trial
Compared with OpenAI API
- Built in India (New Delhi)
Pay as you go
Free trial
Pay as you go
Free trial
7. Retell AI
Retell · San Francisco · AI agent & LLM development platforms · 4.3/5
Voice agent platform.
Pay as you go
Free trial
8. Voyage AI
Voyage AI (MongoDB) · Palo Alto · AI agent & LLM development platforms · 4.2/5
Embedding models.
Pay as you go
Free trial
9. Obviously AI
Obviously AI · San Francisco · AI agent & LLM development platforms · 4.1/5
No-code ML with Indian founders.
₹6,000/mo
Free trial
10. Semantic Kernel
Microsoft · Redmond · AI agent & LLM development platforms · 4.5/5
SDK for AI orchestration.
Free
Free plan available
Compared with OpenAI API
- Has a free plan — OpenAI API does not
OpenAI API alternatives by what you need
Lowest published price
Free OpenAI API alternatives
Indian alternatives to OpenAI API
How to choose a OpenAI API 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.
OpenAI API alternatives — FAQs
What is the best alternative to OpenAI API in 2027?+
The closest matches to OpenAI API on App Advisor are Google Vertex AI (Pay as you go), Together AI (Pay as you go), Fireworks AI (Pay as you go). They are ranked by how closely their category, pricing model, platforms and target business size match OpenAI API, then by rating. The best choice depends on your team size and budget.
Is there a free alternative to OpenAI API?+
Yes. 9 of the 20 alternatives listed have a free plan or are free: Semantic Kernel (Free), Vercel AI SDK (Free), Botpress AI (Free plan). Free plans usually cap users, records or transactions, so check the limits against your monthly volume.
What is the cheapest alternative to OpenAI API?+
Among alternatives that publish a price, Obviously AI starts lowest at ₹6,000/mo. Semantic Kernel also has a free plan. Prices are read from each vendor's website and exclude GST.
Is there an Indian alternative to OpenAI API?+
Yes. 2 alternatives are built in India, including E2E TIR (Pay as you go), Wysa (Free plan). Indian products usually handle GST, TDS and UPI natively and bill in rupees.
OpenAI API vs Google Vertex AI: which is better?+
Google Vertex AI is the closest match to OpenAI API in our catalogue. Compare them side by side before you book a demo.
How were these OpenAI API alternatives chosen?+
Every product listed sits in ai agent & llm development platforms or a category OpenAI API also covers, and OpenAI'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
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