How much does the Claude API cost? There is no single price: you pay per million tokens, with one rate for the text you send (input) and a higher rate for what the model writes (output), with no subscription. The model makes the difference. Claude Sonnet 5, which we recommend for writing code and running agents, costs $2,00 / $10,00 per million tokens at Anthropic's list price and $1,40 / $7,00 on Kunavo; the price drops to $0,70 / $3,50 with Claude Haiku 4.5 and rises to $7,00 / $35,00 with Claude Fable 5.1, always 30% below the list price. In concrete terms: an agent step such as Claude Code on Sonnet 5 costs approximately $0,0434, and with $20 of balance you can pay for approximately 460. Top-ups can also be paid in euros, with Satispay, starting at $10. Prices checked on October 3, 2026.
Due premesse prima delle tabelle. Qui si parla dell'API, cioè di Claude usato dal tuo codice, da Claude Code con una chiave o da altri strumenti: l'abbonamento Claude Pro su claude.ai ha un prezzo a sé, messo a confronto più sotto. E Kunavo è un gateway: espone Claude con l'Anthropic Messages API e con un endpoint compatibile con OpenAI, con una sola chiave and un saldo prepagato. I prezzi Kunavo riportati qui vengono dallo stesso catalogo con cui l'API addebita le richieste; quelli di Anthropic dalla documentation pricing page e da claude.com/pricing, consultate il October 3, 2026.
Claude API pricing 2026, model by model
Importi in dollari per milione di token (MTok), prima l'input and poi l'output. Anthropic pubblica tutti i suoi prezzi in dollari (Anthropic, October 3, 2026). L'ultima colonna dice quanto costa un token letto dalla cache rispetto a un token di input normale.
| Model | Anthropic list price (input / output) | Kunavo (input / output) | Savings | Cache reading |
|---|---|---|---|---|
| Claude Fable 5.1 | $10,00 / $50,00 | $7,00 / $35,00 | 30% | 2,5% of input ($0,175) |
| Claude Opus 5.5 | $4,00 / $20,00 | $2,80 / $14,00 | 30% | 5% of input ($0,14) |
| Claude Opus 5 | $5,00 / $25,00 | $3,50 / $17,50 | 30% | 10% of input ($0,35) |
| Claude Sonnet 5 | $2,00 / $10,00 | $1,40 / $7,00 | 30% | 10% of input ($0,14) |
| Claude Sonnet 4.6 | $3,00 / $15,00 | $2,10 / $10,50 | 30% | 10% of input ($0,21) |
| Claude Haiku 4.5 | $1,00 / $5,00 | $0,70 / $3,50 | 30% | 10% of input ($0,07) |
Due cose saltano all'occhio. Su ogni riga l'output costa 5 volte l'input, quindi a pesare sul conto sono le risposte lunghe più delle domande lunghe. E sono le tariffe delle chiamate normali: per i lavori asincroni Anthropic ha la Batch API, che dimezza il prezzo di input and output (Anthropic, October 3, 2026), ma la tabella non ne tiene conto. Gli altri modelli, non solo Claude, sono nella pricing page.
Claude Sonnet: why you still see $3 / $15 online
Molte pagine indicano ancora $3 / $15 come prezzo di Sonnet. È il listino di Claude Sonnet 4.6, oppure l'aumento che Anthropic aveva annunciato per Sonnet 5 dal 1° settembre 2026 and poi cancellato: $2,00 / $10,00, nato come prezzo di lancio valido fino al 31 agosto, è diventato il prezzo standard (Anthropic, October 3, 2026). On Kunavo, Claude Sonnet 5 costs $1,40 / $7,00 per million tokens, meno di Claude Sonnet 4.6 ($2,10 / $10,50), che pure è il modello più vecchio. Su claude.com/pricing Anthropic elenca già anche Sonnet 5.5 (consultato il October 3, 2026), che Kunavo per ora non offre.
Claude Opus: the newest is also the least expensive
With Opus, the logic is reversed: Claude Opus 5.5 was released after Claude Opus 5 and costs less, $4,00 / $20,00 at list price versus $5,00 / $25,00. On Kunavo, Opus 5.5 costs $2,80 / $14,00, Opus 5 $3,50 / $17,50, and no other Opus version is cheaper than Opus 5.5. Caching also works in its favor: a cached token costs 5% of the input price on Opus 5.5 and 10% on Opus 5. Before moving up to Opus, however, try Sonnet 5: at $1,40 / $7,00 it still costs less, and Opus 5.5 is best reserved for tasks Sonnet cannot handle.
From price per million to the cost of one step
One million tokens is an abstract unit: what matters is how much each agent turn costs. Claude Code, Cline, or an agent you write yourself work in steps, and at each step they send the model instructions, session history, and the files they are working on, receiving an edit or a response in return. In the calculations below, one step is 25.000 input tokens and 1.200 output tokens, without caching:
| Model | One step on Kunavo | 20 step on Kunavo | One step at Anthropic list price |
|---|---|---|---|
| Claude Fable 5.1 | $0,217 | $4,34 | $0,31 |
| Claude Opus 5.5 | $0,0868 | $1,74 | $0,124 |
| Claude Opus 5 | $0,109 | $2,17 | $0,155 |
| Claude Sonnet 5 | $0,0434 | $0,868 | $0,062 |
| Claude Sonnet 4.6 | $0,0651 | $1,30 | $0,093 |
| Claude Haiku 4.5 | $0,0217 | $0,434 | $0,031 |
These are orders of magnitude, not quotes. To recalculate the cost for your volumes, use the Claude token cost calculator.
What drives up the bill
- The tokenizer used by recent models. Da Claude 4.7 in poi, quindi anche Sonnet 5, Opus 5, Opus 5.5 and Fable, lo stesso testo viene diviso in circa il 30% di token in più rispetto a Sonnet 4.6 and ai modelli precedenti (Anthropic, October 3, 2026). Una stima fatta tempo fa su Sonnet 4.6, oggi su Sonnet 5 risulta troppo bassa.
- Italian is not English. La regola di circa 1 token ogni 4 caratteri, o 0,75 parole, che Anthropic indica vale per l'inglese, and Anthropic stessa avverte che il numero cambia con la lingua and il tipo di contenuto (Anthropic, October 3, 2026). Prima di un preventivo conta i token di un tuo testo italiano reale.
- Responses cost 5 times as much as prompts. A limit with
max_tokensand a prompt asking for concise responses reduce the more expensive component. - Long sessions grow larger. Il contesto lungo in sé non ha sovrapprezzo: Anthropic addebita l'intera finestra da 1 milione di token dei modelli 4.6 and successivi alla tariffa standard (Anthropic, October 3, 2026), and Kunavo non applica sovrapprezzi per il contesto lungo su Claude. Però ogni step rimanda tutta la cronologia, quindi più la sessione si allunga, più costa ogni step. Per un compito nuovo conviene aprire una sessione nuova.
Prompt caching: where the real savings are
In agent loops, the biggest savings come not from the list-price discount but from the cache. Each step resends almost everything from the previous one, and the part already seen is charged as a cache read: 10% of the input price on most Claude models, il 2,5% su Claude Fable 5.1 e il 5% su Claude Opus 5.5. For example: if from the second step onward 20.000 of the 25.000 input tokens come from the cache, a step on Sonnet 5 goes from $0,0434 to $0,0182, and one on Opus 5.5 from $0,0868 to $0,0336.
La cache però va prima scritta. Anthropic fa pagare la scrittura 1,25 volte il prezzo di input se la cache dura 5 minuti and 2 volte se dura 1 ora (Anthropic, October 3, 2026); su Kunavo la scrittura costa 1,25× l'input. Il risparmio reale dipende da quanta parte dell'input riesci a riusare. Claude Code attiva il prompt caching da solo e, con una chiave API, la cache dura 5 minuti di default (Claude Code documentation, October 3, 2026). Per le tue chiamate, i parametri sono nella caching documentation.
Claude subscription or pay-as-you-go API?
People searching for Claude pricing often want to know how much Claude costs on claude.ai, not the API. These are separate charges, paid for in different ways:
| Product | Price | How it is paid |
|---|---|---|
| Claude Pro and Max (claude.ai and app) | Pro $20 per month, or $17 per month with the $200 annual plan; Max from $100 per month; taxes excluded | To Anthropic: online only by credit or debit card; through the apps, via the App Store or Google Play |
| Claude API (your code, agents, automations) | Per token, no subscription fee | Anthropic: card, in dollars. Kunavo: Satispay, card, Apple Pay, Google Pay, and Link |
| Claude Code (terminal and editor) | No separate price: use a subscription or an API key | It depends on which of the two you use |
Fonti: claude.com/pricing per i piani (in dollari, tasse escluse) and le Anthropic FAQ on plan billing per i metodi di pagamento, consultate il October 3, 2026. Una ricarica Kunavo diventa saldo API and non può pagare Claude Pro o Max.
What about Claude Code?
Claude Code addebita i token se lo colleghi a una chiave API, oppure consuma i limiti del tuo abbonamento (Claude Code documentation, October 3, 2026). Per farsi un'idea della spesa, Anthropic riporta sulle installazioni aziendali una media di circa $13 per sviluppatore per giorno di utilizzo and $150–250 per sviluppatore al mese, con il 90% degli utenti sotto i $30 per giorno attivo (Claude Code documentation, October 3, 2026). Sono medie di team aziendali, non la spesa di un singolo.
On Kunavo, with $20 you pay for approximately 460 steps on Sonnet 5 without caching, or about 23 tasks of 20 steps. If you work intermittently, with weeks of inactivity, the API key usually costs less, because you pay nothing when you are not using it. If Claude Code stays open all day, the subscription tends to offer better value, at least until you reach the limits.
Configuring Claude Code on Kunavo
Add these lines to your shell configuration file:
export ANTHROPIC_BASE_URL=https://api.kunavo.com
export ANTHROPIC_AUTH_TOKEN=sk-kn-...
export ANTHROPIC_MODEL=claude-sonnet-5
export ANTHROPIC_DEFAULT_OPUS_MODEL=claude-opus-5-5
export ANTHROPIC_DEFAULT_SONNET_MODEL=claude-sonnet-5
export ANTHROPIC_DEFAULT_HAIKU_MODEL=claude-haiku-4-5L'indirizzo in ANTHROPIC_BASE_URL va scritto senza /v1. Per la chiave consigliamo ANTHROPIC_AUTH_TOKEN: Claude Code la manda nell'header Authorization: Bearer and la usa subito, mentre con ANTHROPIC_API_KEY, in modalità interattiva, ti chiede una volta di approvarla prima di preferirla all'abbonamento (Claude Code documentation, October 3, 2026). Dal lato di Kunavo vanno bene tutte and due: la chiave è accettata sia in Authorization: Bearer sia in x-api-key.
Le quattro righe sui modelli evitano sorprese. Se non imposti nulla, su Pro, Max, Team, Enterprise and sull'API di Anthropic Claude Code parte con Opus 5.5 come modello predefinito, and sull'API di Anthropic l'alias sonnet ora punta a Sonnet 5.5 (Claude Code documentation, October 3, 2026). Con queste righe il modello di partenza è Sonnet 5 and gli alias opus, sonnet and haiku puntano a modelli disponibili su Kunavo. Sonnet 5.5 su Kunavo non c'è ancora: senza la riga ANTHROPIC_DEFAULT_SONNET_MODEL, /model sonnet, la fase di esecuzione di opusplan and i subagent impostati su model: sonnet chiederebbero Sonnet 5.5 and riceverebbero un 404. L'alias opus invece punta a Opus 5.5, che su Kunavo costa $2,80 / $14,00 ed è l'Opus più economico; serve Claude Code v2.1.280 o successivo, quindi se la tua versione è più vecchia aggiornala con claude update. Tutti i dettagli sono nella guida all'Claude Code integration.
Paying in euros, including with Satispay
Da Anthropic l'API ha prezzi in dollari and si paga con carta di credito o di debito; PayPal and gli altri processori di pagamento di terze parti non sono accettati (Anthropic help center e pricing page, October 3, 2026). I crediti API comprati da Anthropic scadono dopo un anno and non vengono rimborsati (Anthropic help center, October 3, 2026).
Kunavo incassa tramite Stripe. Il listino è in dollari, ma se paghi dall'Italia il checkout ti mostra la cifra in euro: il cambio include una commissione di conversione del 2–4% a carico tuo, cioè tra $0,20 and $0,40 su una ricarica da $10 (Stripe, Adaptive Pricing, October 3, 2026). Puoi anche pagare in dollari ed evitare quella commissione, lasciando il cambio alla tua banca, ma allora Satispay non compare. Nel checkout in euro trovi:
- Satispay: Stripe ti rimanda alla pagina di Satispay, dove confermi il pagamento (Stripe, October 3, 2026);
- Visa and Mastercard cards, credit or debit;
- Apple Pay (Safari and iPhone), Google Pay (Chrome and Android, if configured) and Link.
PayPal and SEPA Direct Debit are not available, and Klarna is reserved for customers paying from the United States: it does not appear even if you choose dollars. An honest note: Satispay has been available at checkout since October 3, 2026, and no top-up has yet been processed through it. If you do not see it, card, Apple Pay, Google Pay, and Link do the same job.
How the balance works
- You top up in advance, from $10, with no subscription fee. There is a bonus on larger top-ups: $100 become $110, $1.000 become $1.200, $5.000 become $6.250 in balance.
- The balance does not expire, and failed requests are not charged.
- Automatic top-up requires a saved card or Link: with Satispay, you top up manually each time.
- Kunavo does not issue invoices, either VAT invoices or electronic invoices through SDI. The top-up history, including date, amount, and status, is available on the Billing page of the dashboard.
- The balance covers API usage only: your code, Claude Code with a key, and other tools that use a key. It does not pay for Claude Pro or Max.
From zero to your first call
- Sign up with an email address or Google: no card is required.
- In Billing, choose the amount, check the euro amount at checkout, and pay with Satispay.
- In API Keys, create a key: it starts with
sk-kn-and you will see it only once, so copy it immediately. - Point your tool to
https://api.kunavo.com(Claude Code and Anthropic SDK, without/v1) or tohttps://api.kunavo.com/v1(SDKs and tools compatible with OpenAI).
What to do if Satispay does not appear, and how to top up your balance before paying, is explained in the guide Paying for Claude with Satispay.
Which Claude model to choose on a budget
- High volumes and simple tasks (classification, data extraction, short responses): Claude Haiku 4.5, $0,70 / $3,50, the most affordable Claude.
- Everyday coding and agents: Claude Sonnet 5, $1,40 / $7,00. This is the starting point.
- Large refactors, stubborn bugs, long tasks: Claude Opus 5.5, $2,80 / $14,00, the most affordable Opus.
- The most difficult reasoning: Claude Fable 5.1, $7,00 / $35,00. It is the most expensive in the table, so save it for cases where the others are not enough.
To get started: open an account, top up with Satispay or a card, and create a key; you pay only when making your first top-up. The same guide is available in English (Claude API pricing 2026) and German (Claude API Preise).
Frequently asked questions
How much does the Claude API cost?
There is no single price: you pay per million tokens, with one rate for input and another for output, and the model makes all the difference. On Kunavo, prices range from $0,70 per million input tokens with Claude Haiku 4.5 to $7,00 with Claude Fable 5.1; Claude Sonnet 5, the model we recommend for programming, costs $1,40. Output costs 5 times as much as input, and every price is 30% below Anthropic's list price. There is no genuine free trial: Anthropic gives new users a small credit to test the API (FAQ on Anthropic's pricing page, consulted on October 3, 2026), while Kunavo provides no credit upon registration and starts at a $10 top-up. Prices checked on October 3, 2026.
How much does Claude Sonnet 5 cost?
At Anthropic's list price, Claude Sonnet 5 costs $2,00 per million input tokens and $10,00 per million output tokens. It was supposed to be a launch price valid through August 31, 2026, but Anthropic confirmed it as the standard price, so the move to $3 / $15 will not happen (Anthropic pricing page, consulted on October 3, 2026). On Kunavo, it costs $1,40 / $7,00, and cached tokens cost 10% of the input price.
How much does Claude Opus cost?
The newest Opus is also the least expensive: Claude Opus 5.5 costs $4,00 / $20,00 at Anthropic's list price and $2,80 / $14,00 on Kunavo, while Claude Opus 5 costs $3,50 / $17,50 on Kunavo. All other Opus versions cost more. With caching, repeated input on Opus 5.5 costs 5% of the normal price.
How much does a Claude API call cost?
It depends on how many tokens you send and receive. Consider a programming agent step with approximately 25.000 input tokens and 1.200 output tokens: on Kunavo, without caching, it costs around $0,0217 with Claude Haiku 4.5, $0,0434 with Claude Sonnet 5, and $0,0868 with Claude Opus 5.5. If 20.000 of those tokens come from the cache, the same step on Sonnet 5 drops to around $0,0182.
Can you pay for the Claude API with Satispay? And with PayPal?
Not directly through Anthropic: it prices in dollars, accepts credit and debit cards, and does not accept third-party processors such as PayPal (Anthropic Help Center and pricing page, consulted on October 3, 2026). On Kunavo, when Stripe's checkout shows the amount in euros, Satispay is among the payment methods, alongside Visa, Mastercard, Apple Pay, Google Pay, and Link. PayPal and SEPA Direct Debit are not available, and Klarna is reserved for customers paying from the United States. Stripe applies a 2–4% conversion fee to the exchange rate.
Is Claude Pro or an API key better for Claude Code?
Claude Pro costs $20 per month, excluding taxes, and you pay nothing else within the plan limits; with an API key, you pay only for the tokens you use. With $20 of Kunavo balance, you can make approximately 460 agent steps on Sonnet 5 without caching. If you program intermittently, with weeks of inactivity, the API key usually costs less because you pay nothing when you do not use it; if Claude Code is open all day, the subscription tends to provide better value until you reach the limits. Kunavo balance does not pay for Claude Pro or Max, which can only be purchased from Anthropic.
Are there recurring fees, minimums, or expiration dates?
No recurring fee. At Kunavo, the minimum top-up is $10, the balance never expires, and failed requests are not charged. At Anthropic, by contrast, API credits expire one year after purchase and are non-refundable (Anthropic Help Center, consulted on October 3, 2026).
Does Kunavo issue electronic invoices?
No. Kunavo does not issue invoices of any kind: no VAT invoice and no electronic invoice through SDI. The Billing page in the dashboard shows your top-up history, including the date, amount, and status.