Now supporting 125+ AI models across chat, image, video, audio, embeddings & search

Your Gateway to Every AI Model

One API. One platform. Access GPT-4o, Claude, Gemini, Midjourney, Seedance, and 125+ more models. Build bots, generate images, create videos — all with a single key.

No credit card required 125+ AI models OpenAI-compatible API
app.nextgenrelay.com

Relay Assistant

GPT-4o · via Relay AI

128k ctx
Online
Generate a futuristic cityscape at sunset with flying cars and neon lights. Cyberpunk style.
Here's your cyberpunk cityscape! I used GPT Image 2 for this generation. The scene features a sprawling metropolis with flying vehicles, holographic billboards, and dramatic neon-lit skyscrapers at golden hour.

Cyberpunk Cityscape · 1024x1024

GPT Image 21024 × 1024 · 2.1s
Ask anything or generate with any model...
GPT-4o
Model Library

Every model, one platform

Access 125+ AI models across chat, image, video, audio, embeddings & search through a single, unified API. New models added weekly.

Chat
G
GPT-5.4New
C
Claude Opus 4.8
G
Gemini 3.5 FlashPopular
D
DeepSeek V4 Pro
Q
Qwen 3.7 Max
G
Grok 4.3
Image
G
GPT Image 2Hot
N
Nano Banana ProPopular
M
Midjourney
F
Flux Pro
I
Ideogram
R
Recraft V3
Video
S
Seedance 2.0Hot
V
Veo 3.1New
S
Sora 2
R
Runway Gen-3
K
Kling V3 Omni
P
Pika
Audio
T
TTS-1 HD
F
Fish Audio
S
Suno V4Popular
W
Whisper V3
Search
S
Sonar (Perplexity)Popular
T
Tavily Search
E
Exa Search
B
Bocha Search
Features

Everything you need to build with AI

One platform, every model, infinite possibilities. From chat to code, from prototype to production.

Image Smart Retouch

One-click AI product image retouching. Upload a photo, describe your vision, and watch AI enhance it with professional-grade results using GPT Image, Nano Banana, and more.

MonSun

Multi-Model Chat

Chat with any AI model from one interface. Compare responses side by side, switch models mid-conversation, and maintain context across providers.

G
GPT-4o
C
Claude
Compare both models
GPT-4o: The quick brown fox...
Claude: A swift auburn fox...
Coming Soon

Visual Bot Builder

Build sophisticated chatbots with our drag-and-drop flow editor. No code required — connect triggers, AI nodes, and actions visually.

Trigger
User message
Process
AI node
Output
Response

API Key Generation

Generate unique, scoped API keys for each of your projects. OpenAI-compatible endpoints make integration a one-line change.

// API key generation
const key = "sk_live_a8f3k...x9z"
const res = await fetch("/v1/chat")
Coming Soon

Multi-Channel Deploy

Deploy your bots everywhere — WhatsApp, Telegram, web chat, Slack, or your own API. One build, every channel.

WA
TG
Web
API
Coming Soon

Knowledge Base RAG

Train bots on your own data. Upload docs, PDFs, and URLs — we handle embedding, chunking, and retrieval automatically.

Docs
Embed
Search
Coming Soon

Usage Analytics

Track every API call, token, and credit. Real-time dashboards show costs per model, per bot, per channel with full granularity.

MonSun
How It Works

Three steps to go live

From zero to production in under five minutes. No infrastructure to manage.

01

Get Your API Key

Sign up in seconds. Generate a scoped API key from the dashboard. Compatible with the OpenAI SDK — just change the base URL.

02

Pick Any Model

Choose from 125+ models across chat, image, video, audio, embeddings, and search. Switch models with a single parameter — no new integrations needed.

03

Ship to Production

Deploy bots to WhatsApp, Telegram, web, or embed via API. Scale automatically with our managed infrastructure.

OpenAI-compatible API — just change the base URL

terminal
curl api.nextgenrelay.com/v1/chat/completions \
-H "Authorization: Bearer sk_live_xxx" \
-d '{
"model": "gpt-4o",
"messages": [
{ "role": "user",
"content": "Hello, Relay!"}
]
}'
200 OK · 142ms
{"id": "relay_abc123", "model": "gpt-4o",
"choices": [{ "message": {
"content": "Hello! How can I help?"
} ] }
Pricing

Plans for every stage

Sign up free. Top up credits when you need them. No hidden fees, no surprises.

Free

For exploring the platform

$0
  • Pay-as-you-go credits (top-up anytime)
  • All AI models accessible
  • All features unlocked
  • Up to 1 AI bot (Coming Soon)
  • Community support
  • 30 API requests / min
Get Started
Most Popular

Pro

For builders and small teams

$29/mo
  • 3,190 subscription credits / month (resets monthly)
  • Pay-as-you-go credits as backup (never expire)
  • All AI models accessible
  • All features unlocked
  • Priority email support
  • 120 API requests / min
  • Up to 5 AI bots (Coming Soon)
Start Pro Trial

Business

For teams that need scale

$99/mo
  • 10,890 subscription credits / month (resets monthly)
  • Pay-as-you-go credits as backup (never expire)
  • All AI models accessible
  • All features unlocked
  • Priority email support
  • 600 API requests / min
  • Up to 25 AI bots (Coming Soon)
Contact Sales

Need more credits? Top up anytime

Pay-as-you-go credit packs. No subscription required. Credits never expire.

$10
1,000
$0.0100/credit
Buy $10
$25
2,500
$0.0100/credit
Buy $25
Best Value
$50
5,000
$0.0100/credit
Buy $50
$100
10,000
$0.0100/credit
Buy $100
Flexible
Custom
Any amount
1 USD = 100 credits
Enter Amount

Subscription plans include bonus credits compared to pay-as-you-go pricing

Trusted Worldwide

Trusted by developers everywhere

From indie hackers to enterprise teams, developers choose Relay AI as their AI infrastructure.

Startups
Indie Hackers
AI Engineers
Full-Stack Devs
ML Teams
Agencies
125+
AI models
30+
Providers
OpenAI
Compatible API
Pay-as-you-go
No lock-in

"One API key for every model — I replaced three separate subscriptions and cut my costs in half. The OpenAI-compatible endpoint made migration painless."

EA

Early Adopter

Indie Developer

"The multi-model chat is a game changer. I can compare GPT-4o, Claude, and Gemini side by side without switching dashboards."

BT

Beta Tester

Full-Stack Engineer

"Pay-as-you-go credits with no lock-in is exactly what I needed. No monthly minimums, no surprise charges — just pure API access."

EU

Early User

ML Engineer

Ready to relay?

Join developers building the future with AI. Start free, scale infinitely. No credit card required.