One endpoint, every model
Point your OpenAI-compatible tool at NexoAI and call any model by name. Change one string to switch from GPT-5 to Claude Opus. That's the whole migration.
model="claude-opus-4-8"
ONE API KEY · EVERY FLAGSHIP MODEL
Flagship AI models. A fraction of the price.
GPT-5, Claude Opus, Gemini 3, Grok, DeepSeek — the frontier behind a single OpenAI-compatible endpoint. Pay only for what you use, in USD, from a wallet you top up. No subscriptions, no lock-in.
Works in Codex, Claude Code, Cursor, and any OpenAI SDK.
LIVE MODEL · NO ACCOUNT
Ask a real model right now.
Open the free gpt-5.4 demo and watch every token arrive live.
gpt-5.4 · demo
Try it live
Powered by the labs you already trust:
THE OLD WAY IS EXPENSIVE AND FRAGMENTED
Five providers. Five bills. Five SDKs. One headache.
Every lab wants its own account, its own key, its own minimum spend. Switching models means rewriting code. Premium models cost premium money — even when you only send a handful of requests.
THE NEXOAI WAY
Pay-as-you-go, in USD
Top up a wallet. We meter each request to the token. Spend $0.002 or $200 — you're charged for exactly what you use, never a flat monthly fee.
One gateway, transparent pricing
A single metered billing layer in front of every provider. Each model shows its real per-token rate up front — so experimentation stays cheap and production stays predictable.
LIVE IN TWO MINUTES
- 1
Sign up — top up once and get $5 in API credit free.
- 2
Copy your key — set two environment variables. Done.
- 3
Call any model — GPT-5, Opus, Gemini 3. Watch your wallet meter in real time.
MODELS, COUNTING
The whole frontier, one price list.
Every model shows its real per-million-token price up front — no hidden tiers, no contact sales. Filter by provider, capability, or budget.
Anthropic
claude-opus-5
$1.25
input / 1M
OpenAI
gpt-5.6-sol
$0.70
input / 1M
Google
gemini-3.1-pro
$0.62
input / 1M
Anthropic
claude-haiku-4-5
$0.25
input / 1M
NO PLANS. NO SURPRISES.
You hold the wallet. You set the pace.
Add credit whenever you want. Every model is billed at a transparent USD rate per million tokens. Set per-key spend caps so a runaway script can never drain your balance.
Start with $5 free- Transparent per-model USD pricing
- Hard per-key budget caps
- Real-time usage & logs
- Top up by card
Ship on the best models today.
Create your account, top up once, and get $5 free credit for your first calls.
Create free account