One API. Every modality.
Every provider.
Streaming chat, image, video, voice, search and code execution — across GPT, Claude, Gemini, Groq, Mistral, ElevenLabs, Runway, Luma and more. Billed by usage. OpenAI-compatible.
Capabilities
Everything you need to ship AI features.
Pick a modality — every one is exposed through the same unified API.
Streaming chat across every major LLM
GPT, Claude, Gemini, Groq, Mistral, Cohere — switch mid-conversation. Branch and fork threads. Streaming SSE built in. OpenAI-compatible endpoint for drop-in migration.
Providers
No vendor lock-in.
Pick any provider per request. Swap mid-conversation. Avoid procurement for every new vendor.
LLM / chat
- OpenAI
- Anthropic
- Groq
- Mistral
- Cohere
- Together
- Perplexity
- HuggingFace
- OpenRouter
Image
- FAL
- Stability
- OpenAI
Video
- Runway
- Luma
- FAL
Voice
- ElevenLabs
- OpenAI
Web
- Firecrawl
- Perplexity
OpenAI-compatible
Drop-in for what you already have.
Already calling /v1/chat/completions? Change the base URL and you're done. No rewrites.
curl https://api.nxtgenaidev.com/v1/chat/completions \
-H "Authorization: Bearer $NEXTGEN_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "claude-3-5-sonnet",
"messages": [{"role": "user", "content": "Summarise this for me."}],
"stream": true
}'Built-in B2B
A real platform, not just an API.
Multi-tenant from day one — credits, payments, auth and analytics included.
Usage-based billing
Per-token, per-call pricing with Stripe, PayPal, Razorpay and Paddle out of the box.
Auth + RBAC
Passwordless OTP, social, JWT, organisations and roles — production-grade.
Usage analytics
Cost breakdown per model, low-credit alerts to Slack and Discord, audit logs.
Tools & agents
Web search, code exec, data extraction, voice — all callable from any LLM session.
Start building today.
Get an API key, plug in any model, and ship the AI feature you've been putting off.