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Newton’s
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PRICING

Pay per token. Nothing else.

Prepaid balance, no subscription. Requests stop when your balance reaches zero. Start with $1 free credit — top-ups run from $5 to $500, and purchased credits never expire.

Get API key · $1 free credit →ModelsCost calculator

$1 free credit, valid for 7 days. No card required.

$5 usage example (estimate): At claude-haiku-4-5-20251001’s published Newton’s rates, $5 covers about 11,111 sample workloads of 1,000 input + 500 output tokens. That is an estimate, not a promised request count; actual charges depend on completed usage.

VERIFIED LIVE ROUTES

Same model. Two price references.

Models →

Official comparisons use current standard synchronous, short-context text-token list pricing. Input, cached input, and output remain separate. Each comparison links to its official source and evidence window.

ModelNewton’s ratesOfficial API list ratesRequest rateDetails
claude-haiku-4-5-20251001claude-haiku-4-5-20251001
Official token price comparison isn't verified yet. Token rates are hidden.
No current equivalent official comparison$0.0001 / request
claude-opus-4-6claude-opus-4-6
Official token price comparison isn't verified yet. Token rates are hidden.
No current equivalent official comparison$0.0001 / request
claude-opus-4-7claude-opus-4-7
Official token price comparison isn't verified yet. Token rates are hidden.
No current equivalent official comparison$0.0001 / request
claude-opus-4-8claude-opus-4-8
Official token price comparison isn't verified yet. Token rates are hidden.
No current equivalent official comparison$0.0001 / request
claude-opus-5claude-opus-5
Official token price comparison isn't verified yet. Token rates are hidden.
No current equivalent official comparison$0.0001 / request
claude-opus-5-5claude-opus-5-5
Official token price comparison isn't verified yet. Token rates are hidden.
No current equivalent official comparison$0.0001 / request
claude-sonnet-4-6claude-sonnet-4-6
Official token price comparison isn't verified yet. Token rates are hidden.
No current equivalent official comparison$0.0001 / request
claude-sonnet-5claude-sonnet-5
Official token price comparison isn't verified yet. Token rates are hidden.
No current equivalent official comparison$0.0001 / request
claude-sonnet-5-5claude-sonnet-5-5
Official token price comparison isn't verified yet. Token rates are hidden.
No current equivalent official comparison$0.0001 / request

Showing 9 of 9 verified models.

Request rate, where shown, is a flat per-request charge on top of token rates — currently $0.0001. It is the only other fee.

Prepaid, not a subscription

Add balance only when you choose. There is no monthly subscription and no automatic reload.

Request-level receipts

Activity records accepted requests with model, token usage, published rate, and cost.

Stop at zero

New requests stop when funded balance reaches zero. Continue only after another explicit top-up.

Top-ups from $5

Add $5, $10, $25, or $50 in one click from your console, or any custom amount from $5 to $500. You see the final price before you pay.

QUESTIONS

Pricing and credits.

How do I compare rates?

Compare the same exact model ID and separate input, cached-input, and output categories. Official rates appear only while equivalent source evidence is current.

Do purchased credits expire?

Purchased credits do not expire while your account remains open, subject to the Terms. They do not reset monthly.

How much do I need to start?

Nothing — your account opens with $1 in free credit, valid for 7 days. When you are ready to continue, the smallest top-up is $5.

What happens when credits run out?

New requests stop before additional model usage is accepted. Add credits when you choose to continue.

How can I review usage?

Activity records each accepted request with its model, token usage, published price, and cost.

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