Claude Sonnet 5 — Specifications
| Développeur | Anthropic |
|---|---|
| Type | General / agentic |
| Modalité | Text, vision |
| Paramètres | Non divulgué |
| Fenêtre de contexte | 1 million |
| Sortie maximale | 128 K |
| Licence | Propriétaire |
| Poids ouverts | Non |
| Publié | 2026-06 |
| Prix de l’entrée | 2,00 $ / 1 million |
| Prix de la sortie | 10,00 $ / 1 million |
| Fournisseurs d'API | Anthropic API, AWS Bedrock, Google Vertex AI |
Résultats de référence
What is Claude Sonnet 5?
Claude Sonnet 5 is the current Sonnet-tier model and the default on Claude’s Free and Pro
plans. Its benchmark profile is coding-heavy: 85.2% on SWE-Bench Verified, 63.2% on SWE-Bench
Pro, 80.4% on Terminal-Bench 2.1 and 81.2% on OSWorld-Verified — results that put it in
frontier territory for software engineering and computer-use tasks specifically.
The pricing needs a diary entry. Introductory rates of $2 in / $10 out per million tokens
run through 31 August 2026, after which standard pricing of $3 / $15 applies — a 50% increase
that will land silently on any workload sized against the introductory number. If you are
modelling unit economics for a product launching this year, model them at $3 / $15 and treat
the current rate as a temporary discount rather than the baseline. Even at standard pricing
it is a strong buy for agentic coding: the SWE-Bench Verified and Terminal-Bench numbers are
close to models costing several times more, which is precisely the case for putting Sonnet 5
rather than an Opus-tier model at the centre of a coding agent.
Claude Sonnet 5 pricing: API cost per 1M tokens
| Entrée (par million de jetons) | $2.00 |
|---|---|
| Sortie (par million de jetons) | $10.00 |
| Output/input ratio | 5× |
| Blended (4:1 in:out) | $3.60 per 1M tokens |
What Claude Sonnet 5 costs per month
Real monthly spend at a 4:1 input-to-output mix — the ratio a typical chat or RAG workload actually produces.
| Charge de travail | Tokens / month | Cost / month |
|---|---|---|
| Side project | 1M in / 0.25M out | $4.50 |
| Small team | 20M in / 5M out | $90 |
| Production | 200M in / 50M out | $900 |
Run your own numbers in the Calculateur de coûts des API IA.
Cheaper alternatives to Claude Sonnet 5
| Modèle | Coût combiné par million de dollars | You save |
|---|---|---|
| Mistral 7B ouverte | $0.0220 | 99% cheaper |
| Llama 3.1 8B ouverte | $0.0220 | 99% cheaper |
| Mistral NeMo 12B ouverte | $0.0240 | 99% cheaper |
Questions fréquemment posées
How much does Claude Sonnet 5 cost per 1M tokens?
Claude Sonnet 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 cost per month?
A small-team workload of 20M input and 5M output tokens a month costs about $90 on Claude Sonnet 5. A side project (1M in / 0.25M out) costs roughly $4.50.
What is a cheaper alternative to Claude Sonnet 5?
Mistral 7B is the strongest cheaper option in our database at $0.0220 per 1M blended — about 99% less than Claude Sonnet 5. It is also open-weight, so self-hosting is an option.
Can I run Claude Sonnet 5 locally?
No. Claude Sonnet 5 is a closed, API-only model — the weights are not released, so it cannot be self-hosted.
Why does Claude Sonnet 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 charges 5× more for output, which is why prompt-heavy workloads are far cheaper to run than generation-heavy ones.
Prices are the published list rates for the model's primary API and are reviewed as providers change them. Volume, batch and cached-input discounts are not included. Compare every model side by side in the Base de données des modèles IA ou le classement des LLM.
