Pricing

Saturn uses a prepaid credit model. Add funds to your wallet, and pay only for what you use.

How It Works

Add credits via card (USD) or Lightning (sats)
Use capabilities — each call deducts from your balance
Get receipts — every call returns exact cost

No subscriptions. No minimum spend. No surprise bills.

Adding Credits

Card (USD)
Lightning (sats)

const checkout = await saturn.wallet.fundCard({
  amountUsdCents: 1000 // $10 minimum
});
// Opens Stripe checkout

Minimum: $10
Instant credit after payment
Standard card processing fees apply

const invoice = await saturn.wallet.fund({
  amountSats: 10000
});
// Pay with any Lightning wallet

No minimum
Instant credit after payment
No fees (you pay Lightning routing)

Capability Pricing

Pricing varies by capability and provider. Here are typical costs:

Reason (LLM)

Model	Input	Output
gpt-4o	$2.50/M tokens	$10.00/M tokens
gpt-4o-mini	$0.15/M tokens	$0.60/M tokens
claude-sonnet-4-20250514	$3.00/M tokens	$15.00/M tokens
claude-3-5-haiku	$0.25/M tokens	$1.25/M tokens

Typical costs:

Simple question: $0.001 -$ 0.01
Long analysis: $0.05 -$ 0.20
Complex reasoning: $0.10 -$ 0.50

Search

Provider	Cost per query
Serper	~$0.001
Brave	~$0.002

Read / Scrape

Provider	Cost per page
Jina	~$0.001
Firecrawl	~$0.002
ScraperAPI	~$0.005

Execute (Code)

Resource	Cost
Base execution	~$0.01
Per second of CPU	~$0.001

Imagine (Images)

Model	Cost per image
SDXL	~$0.01
Stable Diffusion	~$0.005

Speak (TTS)

Provider	Cost
ElevenLabs	~$0.30 per 1000 characters

Transcribe (STT)

Provider	Cost
Deepgram	~$0.01 per minute

Email / SMS

Capability	Cost
Email (Resend)	~$0.001 per email
SMS (US/Canada)	~$0.01 per message
SMS (International)	~$0.05-0.15 per message

Getting Exact Pricing

Query the capabilities API for current pricing:

const capabilities = await saturn.capabilities.list();

for (const cap of capabilities) {
  console.log(`${cap.name}: ${cap.pricing}`);
}

Or check a specific capability:

const reason = await saturn.capabilities.get('reason');
console.log(reason.providers);
// Shows pricing per provider/model

Cost Control

Per-Call Quotes

Every call is quoted before execution:

const result = await saturn.reason({ prompt: '...' });

console.log({
  quoted: result.metadata.quotedUsdCents,   // Estimated cost
  charged: result.metadata.chargedUsdCents, // Actual cost
});

Budget Caps

Set spending limits per agent:

await saturn.policies.update(agentId, {
  maxPerCallUsdCents: 50,    // Max $0.50 per call
  maxPerDayUsdCents: 500,    // Max $5.00 per day
});

Balance Monitoring

const wallet = await saturn.wallet.get();
console.log(`Balance: $${(wallet.balanceUsdCents / 100).toFixed(2)}`);

if (wallet.balanceUsdCents < 100) {
  console.warn('Low balance - add funds');
}

Receipt Details

Every call returns a receipt with:

{
  metadata: {
    chargedUsdCents: 15,      // Actual cost in cents
    chargedSats: 45,          // Actual cost in sats
    quotedUsdCents: 18,       // Pre-quoted estimate
    balanceAfter: 985,        // Remaining credits
    auditId: 'aud_abc123',    // Unique receipt ID
    provider: 'openai',       // Which provider handled it
    latencyMs: 1234,          // Request duration
  }
}

FAQ

What happens when credits run out?

Calls are rejected with CREDIT_EXHAUSTED. No upstream call is made. Add credits to continue.

Can I get a refund?

Unused credits can be refunded. Contact support.

Do credits expire?

No. Credits don’t expire.

How do I track spend?

Every call returns chargedUsdCents
Use saturn.wallet.transactions() for history
Dashboard shows per-agent spend

Is there volume pricing?

Getting Started

Core Concepts

Capabilities

SDK

Tutorials

Resources

How It Works

Adding Credits

Capability Pricing

Reason (LLM)

Search

Read / Scrape

Execute (Code)

Imagine (Images)

Speak (TTS)

Transcribe (STT)

Email / SMS

Getting Exact Pricing

Cost Control

Per-Call Quotes

Budget Caps

Balance Monitoring

Receipt Details

FAQ

​How It Works

​Adding Credits

​Capability Pricing

​Reason (LLM)

​Search

​Read / Scrape

​Execute (Code)

​Imagine (Images)

​Speak (TTS)

​Transcribe (STT)

​Email / SMS

​Getting Exact Pricing

​Cost Control

​Per-Call Quotes

​Budget Caps

​Balance Monitoring

​Receipt Details

​FAQ

How It Works

Adding Credits

Capability Pricing

Reason (LLM)

Search

Read / Scrape

Execute (Code)

Imagine (Images)

Speak (TTS)

Transcribe (STT)

Email / SMS

Getting Exact Pricing

Cost Control

Per-Call Quotes

Budget Caps

Balance Monitoring

Receipt Details

FAQ