Using Claude Sonnet 4.6 on Anthropic

Implementation guide · Claude 4.6 · Anthropic

Serverless

Anthropic exposes Claude Sonnet 4.6 through model ID claude-sonnet-4-6. Use the setup steps, sourced pricing, capabilities, and official provider links below to validate this route before deployment.

Last refreshed 2026-07-26. Next refresh: weekly.

Quick Start

  1. 1
    Create an account at Anthropic and generate an API key.
  2. 2
    Use the Anthropic SDK or REST API to call claude-sonnet-4-6 — see the documentation for request format.
  3. 3
    You'll be billed $3.00/1M input, $15.00/1M output tokens. See full pricing.

Code Examples

Install
pip install anthropic
API key
ANTHROPIC_API_KEY
Model ID
claude-sonnet-4-6

Use the versioned model ID, e.g. "claude-sonnet-4-6" or "claude-opus-4-7-20251101".

import anthropic

client = anthropic.Anthropic()  # reads ANTHROPIC_API_KEY from env
message = client.messages.create(
    model="claude-sonnet-4-6",
    max_tokens=1024,
    messages=[{"role": "user", "content": "Hello"}]
)
print(message.content[0].text)

Pricing on Anthropic

TypePrice (per 1M)
Input tokens$3.00
Output tokens$15.00

Capabilities

VisionMultimodalReasoningJSON / Tool useStructured OutputsCode ExecutionPrompt CachingBatch API

About Claude Sonnet 4.6

Claude Sonnet 4.6 is Anthropic's best combination of speed and intelligence. Proprietary decoder-only model with 1M-token context, 64K max output, multimodal vision, extended thinking, and function calling. Available via Anthropic API, AWS Bedrock, GCP Vertex AI, and OpenRouter at $3/1M input and $15/1M output tokens.

Model Specs

Released2026-02-17
Context1m
ArchitectureDecoder Only
Knowledge cutoff2025-08

Provider

Anthropic

San Francisco, California, United States