One key for models, mail and agents.

Kaer API is one prepaid account for Janus 1 Flash and Pro, open models, mail, search and maps. Sign in with your Kaer account and make your first call in minutes.

Get API key Read the docs

Top-ups from $5+$5 on your first $25 top-upNo invoices

POSTapi.kaer.ai/v1/chat/completionsJanus 1.0 Flash

curl https://api.kaer.ai/v1/chat/completions \
  -H "Authorization: Bearer $KAER_API_KEY" \
  -d '{"model": "janus-1-flash",
       "messages": [{"role": "user", "content": "Summarise my inbox"}]}'

Live on the gateway

RX7HV75XBA87US39GH6A6JPWKG302XSGNXTBTE2ZDN03DNFSX5YKWZ3L5ET177R0K687HQ53QE375WDN471N7UDEXSBDMDDWV1M3NJN249WPA114EA9FYDQQUR48S6Z29V54JL558EE73FBBF3LXFBH4R37EA4LFX5ZN40D1MN59kaer_live_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 1 Flash

200Reserved, ran, settled $0.00041Balance $24.79

Priced per call, straight from the live rate card

Janus 1 Flash$0.14 / 1M inJanus 1 Pro$0.14 / 1M in9 modelson one keyWeb search$0.50 / 1KMail$0.001 / messageMap tiles$0.005 / 1K+$5on your first $25 top-up

Why one key

Five vendors, five keys, five invoices.

Most AI products are stitched together and billed after the fact. Kaer API is one prepaid key for everything your product calls.

vendor_c…41xcPost-paid · bill arrives later

kaer_live_…e1ffPrepaid · $0.00041 settled

How it works

Metered at the gateway, before it runs.

Every request reserves the most it could cost, runs, then settles the exact price. Balances can't go negative, so there is no invoice to dread.

The gateway

Checked, reserved, then run

Key, scope and tier are checked first. The most a call could cost is held, and only the exact price is kept.

One balance

Every Kaer service, one credit

Janus 1 Flash and Pro, open models, mail, search, maps and your own agents draw on it. Each workspace keeps its own.

1Your app sends a request with its key
2The gateway checks key, scope and tier
3The most it could cost is reserved
4It runs, and the exact cost settles

Services

What will you build?

Kaer's own models, open models, mail, search and maps behind one OpenAI-compatible endpoint.

Models

Janus 1 Flash and Pro

Kaer's own models and open models behind one OpenAI-compatible endpoint.

Models

Agents

Tools and streaming

Tool calling for your own agents. Kaer Work runs the same harness on your Kaer plan.

Chat and tools

Mail

Mail from kaer.dev

Send from your workspace's own address, with delivery status for every message.

Mail

Search & maps

Search and maps

Kaer's own web index in three lanes, plus map tiles and places, priced per call.

Credit

Top up once, spend on everything.

Bonus+$5 on your first top-up of $25 or more. +10% from $50, +15% from $100.
PrepaidNo invoices, no overage. Auto top-up only if you turn it on.
WorkspacesUp to 5 workspaces, each with its own balance, keys and billing.
StartTop up from $5 to make your first call. There is no free credit.

Get API key See pricing

Your Kaer account

Bring your Kaer account.

Signed in on kaer.ai? You're signed in here. Your plan keeps running Kaer in the app and Kaer Work; API calls draw on your workspace's prepaid credit.