claude-sonnet-4.5

API ID: claude-sonnet-4.5

Claude is published through NexoRouter for text generation, conversation, summarization, extraction, and general product workflows.

Try in Playground

Type: Chat
Input / generation: $3 / 1M tokens
Output: $15 / 1M tokens
Endpoint: /v1/chat/completions

Verified information

Overview

claude-sonnet-4.5 is presented as a chat model from Anthropic. Start with an OpenAI-compatible call and evaluate it against your product's prompts, language, and quality criteria.

Verified routePublished endpoint

Publication confirms the /v1/chat/completions route; it does not claim features the contract has not documented.

Commercial statusReviewed price

The displayed price is NexoRouter's approved public price, not an internal cost or supplier discount.

Profile boundaryNo invented metrics

Context, tools, benchmarks, latency, TTFT, and availability appear only when they have a source and measurement window.

Public billing

Pricing

Public usage pricing for this model ID. The unit changes by endpoint: not every model is billed by tokens.

Input / generation: $3 / 1M tokens
Cached input: —
Output: $15 / 1M tokens

Prices are published after commercial review. A supplier update creates a review; it never exposes supplier discounts, orders, or internal costs.

OpenAI-compatible

Integration

NexoRouter exposes this model through /v1/chat/completions. Use a NexoRouter API key and retain the OpenAI-compatible base URL.

curl/v1/chat/completions

curl --fail-with-body 'https://api.nexorouter.com/v1/chat/completions' \
  -H "Authorization: Bearer $NEXOROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "claude-sonnet-4.5",
  "messages": [
    {
      "role": "user",
      "content": "Hello"
    }
  ]
}'

Chat Completions example using the exact model ID. Adjust messages and parameters for your use case.

Start with the API reference

Confirm authentication, endpoint, request shape, and limits before copying an integration into production.

Open guide

Provenance

Sources & updates

Every profile combines NexoRouter operating data with provider documentation links. A provider link does not become a capability promise until that claim is reviewed and published.

NexoRouter public catalog snapshot

Public route, availability, and price checked in the catalog snapshot: Jul 24, 2026, 8:56 AM UTC.

NexoRouter catalogNexoRouter published catalog
Jul 24, 2026, 8:56 AM
Official documentationAnthropic model documentation
Open source

Update policy: route evidence targets a 6 h cadence and official-document monitoring, when enabled in production, at least every 24 h. A change creates an internal proposal; claims and translations require human review and are revalidated within 30 days.

For developers

FAQ

What is claude-sonnet-4.5 for?

claude-sonnet-4.5 is published for text generation and conversation. Test it against your product's prompts, language, and quality criteria.

What does claude-sonnet-4.5 cost?

The current public price is $3 / 1M tokens for input or generation and $15 / 1M tokens for output. The visible unit is the billing unit for this endpoint.

What is this model called in the API?

Use claude-sonnet-4.5 exactly as the model ID and call /v1/chat/completions with a NexoRouter API key.

Why are benchmarks, context, or uptime not shown?

We do not publish figures without a verifiable source, method, and measurement window. When NexoRouter has aggregated telemetry and documentation for those fields, they will be added with their provenance.