AI API Infrastructure

One balance.
Three leading
AI ecosystems.

Access GPT, Gemini and Kimi through Zaitro API. Manage credits, API keys and usage from one clean developer platform.

Explore Models

No subscription required
Usage-based credits
Developer-first API

Request routing

Illustrative interface

Your app

POST /chat/completions

Zaitro API gateway

model: gpt-5.4

OpenAIRouting

Google Gemini

Moonshot Kimi

200 OK312 mstokens: 842Example values, not performance claims

Built for developers shipping AI products.

OpenAI
Google Gemini
Moonshot Kimi
38 models

Model access

Your models.
One developer experience.

Three provider ecosystems behind a single API surface, a single key and a single balance.

OpenAI

24 models

Reasoning
Coding
General

Max context: 1M
Available: 24

Example model ids

gpt-6-astra
gpt-6.1-sol
gpt-6-sol

View models

Google Gemini

10 models

Vision
Long context
General

Max context: 1M
Available: 10

Example model ids

gemini-3.8-flash
gemini-3.7-flash
gemini-3.6-flash

View models

Moonshot Kimi

4 models

Reasoning
Long context
Coding

Max context: 1M
Available: 4

Example model ids

kimi-k3
kimi-k2.7-code-highspeed
kimi-k2.7-code

View models

Model explorer

Find the model, copy the id.

All 38 supported models with their capabilities, context window and exact API id.

38 models

Provider	Capabilities	Context	Status	API ID
OpenAI	ReasoningCodingLong context	1M	Available	`gpt-5.4`
Gemini	FastVisionLong context	1M	Available	`gemini-2.5-flash`
Kimi	ReasoningCodingLong context	1M	Available	`kimi-k3`
OpenAI	FastLong context	1M	Available	`gpt-5.6-luna`
Gemini	FastLong context	1M	Available	`gemini-2.5-flash-lite`
Kimi	ReasoningCoding	256K	Available	`kimi-k2.6`
OpenAI	ReasoningLong context	1M	Available	`gpt-5.6-sol`
Gemini	ReasoningVisionLong context	1M	Available	`gemini-2.5-pro`
Kimi	Coding	256K	Available	`kimi-k2.7-code`

View all models →

Credits

Credits that work across your models.

One balance, drawn down by usage. The console shows what you have, what you have spent and what is left.

See the credits console

01
Top up once
Add credit to a single Zaitro API balance. No subscription, no monthly minimum.
02
Use supported models
Spend that balance across GPT, Gemini and Kimi. Switching model does not mean switching account.
03
Track consumption in one place
Requests, tokens and credits for every model and every key, in one view.

Purchased and bonus tracked separatelyUsage priced per token

Wallet balance

Console preview

$808.32

Available credits

Purchased

$1,000.00

Bonus

$350.00

Used today

$18.20

Estimated remaining

~40 days

At the last 7 days' rate

Last 7 days

73,736 requests

Top-up bonus

Get more from every top-up.

Eligible top-ups receive 35% extra credits on top of the amount you add. Move the slider to see what a top-up is worth.

Custom below

Top-up amount$100

$10$5,000

Eligible top-ups of $20 or more receive 35% extra credits. Bonus credits are tracked separately from purchased credits in the console.

You receive

Base credits: $100
Bonus credits · 35%: +$35
Total credits: $135

Top Up

Bonus availability and promotional rates may vary. Bonus credits apply to eligible top-ups.

Why Zaitro API

Less friction between your idea and the model.

The platform handles accounts, keys and accounting so your application only has to make a request.

Unified Credits

Manage supported AI usage through a single Zaitro API balance rather than a separate account per provider.

Simple API Keys

Create, rotate and revoke keys from one console, with a spending limit on each.

Usage Visibility

Token consumption, request counts and credit spend, broken down by model and by key.

Multiple Model Ecosystems

Reach supported GPT, Gemini and Kimi models without managing separate balances inside the Zaitro API platform.

Developers

Built for code, not complexity.

Zaitro API speaks a chat-completions schema. Point your client at the base URL, pass a model id, and carry on.

Read the docs

curl https://api.zaitroapi.com/v1/chat/completions \  -H "Authorization: Bearer $ZAITRO_API_KEY" \  -H "Content-Type: application/json" \  -d '{    "model": "gpt-5.4",    "messages": [      { "role": "user", "content": "Explain this report." }    ]  }'

Base URL is a configurable placeholder until the API specification is signed off. It reads from NEXT_PUBLIC_API_BASE_URL.

Response

200 OK

{  "id": "chatcmpl_7Qa4Kp",  "model": "gpt-5.4",  "choices": [    {      "index": 0,      "message": {        "role": "assistant",        "content": "The report covers three quarters..."      },      "finish_reason": "stop"    }  ],  "usage": {    "prompt_tokens": 842,    "completion_tokens": 311,    "total_tokens": 1153  }}

What that request costs

Input: 842
Output: 311
Credits: $0.0023

Deducted from your balance and attributed to the key that made the call.

Model switching

Switch models without rebuilding your product.

Your application talks to one base URL with one key. Choosing a different model means changing a string.

ApplicationUnchanged

Zaitro APIhttps://api.zaitroapi.com/v1

Your application code

1 line differs

const res = await client.chat.completions.create({+  model: "gpt-5.1",  messages,});

Same client, same request shape, same key. Only the model id moves. The exact request schema is confirmed against the backend before launch.

Playground

Try a model before you wire it in.

Pick a provider, pick a model, send a prompt. The console playground runs against your own balance.

Open playground

Provider

Model

System prompt

Temperature

Max tokens

Conversation

gpt-5.1

You

Summarise this quarter's support tickets by theme.

Run the sample to see a response.

Sample response

Latency: —
Input: —
Output: —
Est. credits: —

Usage analytics

Know where every credit goes.

Requests, tokens and spend, broken down by provider, by model and by key.

Open usage console

Custom

API requests

73.7K

Across 7 points

Tokens

58.57M

35.70M in · 22.87M out

Credits used

$139.92

Deducted from balance

Error rate

0.49%

364 of 73,736

API requests over time

Volume by interval

Usage by provider

Share of credits spent

OpenAI$281.67
Google Gemini$157.09
Moonshot Kimi$102.92

Token usage

Input plus output per interval

Usage by model

Credits spent, last 30 days

GPT-5.4$146.25
Gemini 2.5 Flash$102.92
GPT-5 Mini$86.67
Kimi K2.7 Code$75.84
Gemini 3.1 Pro$70.42
GPT-4o Mini$59.58

Figures shown are sample account data for interface design. Live values come from your own usage. See the console at /console.

API keys

Keys your team can be trusted with.

Separate keys per environment, a spending limit on each, and one place to rotate or revoke.

Open key console

API keys

Key name	Created	Last used	Usage · 30d	Monthly limit	Status	Actions
Production `zai_live_7Qa4············, remainder hidden`	14 Jun 2026	2 Oct 2026	24,180	$400.00	Active	Manage
Development `zai_test_3Kp9············, remainder hidden`	14 Jun 2026	1 Oct 2026	3,942	$50.00	Active	Manage
Internal Tool `zai_live_1Rb6············, remainder hidden`	2 Aug 2026	27 Sept 2026	1,548	No limit	Active	Manage
Prototype (rotated) `zai_live_9Zd2············, remainder hidden`	3 May 2026	1 Aug 2026	0	No limit	Revoked	Archived

Create and name per environment
Rotate without downtime
Revoke instantly
Set a spending limit

For developers

What teams build on it.

Anything that makes a chat-completions request, from a single feature to a fleet of agents.

AI applications
Product features built on chat completions.
Coding tools
Review, refactor and generation inside a developer workflow.
Internal tools
Summaries, extraction and classification over company data.
Automation
Scheduled jobs that read, decide and write back.
Agents
Multi-step tool use where model choice changes per step.
Research systems
Batch evaluation across several models at once.
Customer support
Triage, drafting and deflection on inbound tickets.

Enterprise

Infrastructure your team can control.

One account, many developers, and a clear view of what each of them is spending.

Talk to Zaitro API

Available today

Centralised Credits
One balance for the whole team, topped up once.
API Key Management
A key per environment or per service, revocable in one click.
Usage Limits
A monthly spending cap on any key.
Usage Analytics
Spend and volume by model, by key and by provider.

On the roadmap

Not yet available

Team Workspaces
Separate projects with their own keys and budgets.
Audit Logs
Who created, rotated or revoked which key, and when.
Central Billing
Consolidated invoicing and purchase orders.
Support
Named contact and response commitments.

How it works

Three steps to your first call.

01
Create an account
Email or Google. No sales call, no waiting list.
02
Add credits and generate an API key
Prepaid balance, a key per environment.
03
Choose a model and start building
Pass a model id and make your first request.

Documentation

Get started in minutes.

Every endpoint documented with a copyable example and the parameters spelled out inline.

Open documentation

Quickstart

Draft

Create a key in the console, export it, and make your first request. Any OpenAI-compatible client works by changing the base URL.

Shell

export ZAITRO_API_KEY="zai_live_..." curl https://api.zaitroapi.com/v1/chat/completions \  -H "Authorization: Bearer $ZAITRO_API_KEY" \  -H "Content-Type: application/json" \  -d '{ "model": "gpt-5.4", "messages": [{"role":"user","content":"Hello"}] }'

Body parameters

modelstringRequired: The model id to route the request to.
messagesarrayRequired: The conversation so far, oldest first.
temperaturenumber: Sampling temperature. Defaults to 1.
max_tokensinteger: Upper bound on tokens generated in the reply.

FAQ

Questions worth asking.

Bracketed answers are policy decisions for the business to confirm before launch.

Three AI ecosystems. One place to build.

Start with Zaitro API and manage your supported AI usage from one developer platform.

View Documentation

One balance.Three leading AI ecosystems.

Your models.One developer experience.

OpenAI

Google Gemini

Moonshot Kimi

Find the model, copy the id.

Credits that work across your models.

Top up once

Use supported models

Track consumption in one place

Get more from every top-up.

Less friction between your idea and the model.

Unified Credits

Simple API Keys

Usage Visibility

Multiple Model Ecosystems

Built for code, not complexity.

Switch models without rebuilding your product.

Try a model before you wire it in.

Know where every credit goes.

API requests over time

Usage by provider

Token usage

Usage by model

Keys your team can be trusted with.

What teams build on it.

AI applications

Coding tools

Internal tools

Automation

Agents

Research systems

Customer support

Infrastructure your team can control.

Available today

Centralised Credits

API Key Management

Usage Limits

Usage Analytics

On the roadmap

Team Workspaces

Audit Logs

Central Billing

Support

Three steps to your first call.

Create an account

Add credits and generate an API key

Choose a model and start building

Get started in minutes.

Quickstart

Body parameters

Questions worth asking.

What is Zaitro API?

Which model providers are supported?

How do credits work?

How do bonus credits work?

Can I use different supported models with one balance?

How do I monitor my usage?

Can I create multiple API keys?

Do credits expire?

How is my data handled?

Where can I view service status?

Three AI ecosystems. One place to build.

One balance.
Three leading
AI ecosystems.

Your models.
One developer experience.