Claude Sonnet 5.5 — Specifications
Compiled by Mustafa Ihsan from the vendor’s published documentation · Last updated
| Sviluppatore | Anthropic |
|---|---|
| Tipo | Ragionamento / agenziale |
| Modalità | Testo, visione |
| Parametri | Non divulgato |
| Licenza | Proprietaria |
| Pesi aperti | No |
| Pubblicato | 2026-09 |
| Prezzo dell’input | $2.00 /1M |
| Prezzo dell’output | $10.00 /1M |
| Provider API | Anthropic API, AWS, Google Cloud, Microsoft Azure |
Benchmark
| Anthropic-reported | Terminal-Bench 4.0 70.6%; CursorBench 4.0 55.5%; FrontierCode 1.1 (Max) 46.2%; GDPval-AA v2.1 1844 Elo; OSWorld 2.1 80.1% (partial); Humanity's Last Exam 64.5% (with tools) |
|---|
Cos'è Claude Sonnet 5.5?
Claude Sonnet 5.5 is Anthropic’s mid-range model, released on 28 September 2026 as the second model of the Claude 5.5 family. Secondo Anthropic, it generates output more than 30% faster than Sonnet 5 and costs up to 30% less per task because it needs fewer tokens, while scoring close to Claude Opus 5.5 on several agentic and knowledge-work evaluations.
API pricing is unchanged from Sonnet 5: $2 per million input tokens and $10 output, with cache reads at $0.20 and cache writes at $2.50. It is available on the Claude Platform as claude-sonnet-5-5 and on AWS, Google Cloud and Microsoft Azure. A plain-language guide: Claude Sonnet 5.5: what’s new and is it free.
Claude Sonnet 5.5 pricing: API cost per 1M tokens
| Input (per ogni milione di token) | $2.00 |
|---|---|
| Output (per ogni milione di token) | $10.00 |
| Rapporto output/input | 5× |
| Combinato (4:1 in:out) | $3.60 per 1 milione di token |
What Claude Sonnet 5.5 costs per month
Spesa mensile reale con un mix input-to-output 4:1 — il rapporto effettivamente prodotto da un tipico carico di lavoro basato su chat o RAG.
| Carico di lavoro | Token/mese | Costo/mese |
|---|---|---|
| Progetto secondario | 1 milione in ingresso / 0,25 milioni in uscita | $4.50 |
| Piccolo team | 20 milioni in ingresso / 5 milioni in uscita | $90 |
| Produzione | 200 milioni in ingresso / 50 milioni in uscita | $900 |
Calcola i tuoi numeri personalizzati nel Calcolatore dei costi delle API per l'IA.
Cheaper alternatives to Claude Sonnet 5.5
| Modello | Costo combinato ($/1 milione) | Risparmi |
|---|---|---|
| Mistral 7B aperta | $0.0220 | 99% più economico |
| Llama 3.1 8B aperta | $0.0220 | 99% più economico |
| Mistral NeMo 12B aperta | $0.0240 | 99% più economico |
Domande frequenti
How much does Claude Sonnet 5.5 cost per 1M tokens?
Claude Sonnet 5.5 costs $2.00 per 1M input tokens and $10.00 per 1M output tokens. At a typical 4:1 input-to-output mix that blends to about $3.60 per 1M tokens.
How much does Claude Sonnet 5.5 cost per month?
A small-team workload of 20M input and 5M output tokens a month costs about $90 on Claude Sonnet 5.5. A side project (1M in / 0.25M out) costs roughly $4.50.
What is a cheaper alternative to Claude Sonnet 5.5?
Mistral 7B is the strongest cheaper option in our database at $0.0220 per 1M blended — about 99% less than Claude Sonnet 5.5. It is also open-weight, so self-hosting is an option.
Can I run Claude Sonnet 5.5 locally?
No. Claude Sonnet 5.5 is a closed, API-only model — the weights are not released, so it cannot be self-hosted.
Why does Claude Sonnet 5.5 charge more for output than input?
Output tokens are generated one at a time and cannot be batched the way a prompt can, so they cost the provider more to serve. Claude Sonnet 5.5 charges 5× more for output, which is why prompt-heavy workloads are far cheaper to run than generation-heavy ones.
Visualizza tutti i modelli Claude confrontati fianco a fianco: Prezzi API Claude.
I prezzi indicati sono le tariffe ufficiali pubblicate per l'API principale del modello e vengono aggiornati man mano che i fornitori li modificano. Sconti per volumi elevati, elaborazione batch e input memorizzati nella cache non sono inclusi. Confronta tutti i modelli fianco a fianco nel database dei modelli AI o il Classifica LLM.