claude-sonnet-4-6 — API, Pricing & Context Window | Vivgrid

claude-sonnet-4-6 is Anthropic's balanced Sonnet model, offering much of Opus's coding and reasoning quality at a lower price and faster speed. Its 1M-token context window makes it a versatile workhorse for production agents.

On Vivgrid, claude-sonnet-4-6 is geo-distributed across AMER and EMEA and reachable on the Messages API through the same unified key as the rest of the catalog.

Specifications

Pricing

Pricing in USD per 1M tokens, matching the provider's rates.

Quick start

Call claude-sonnet-4-6 through Vivgrid's unified, OpenAI-compatible endpoint. Get an API key from the Vivgrid Console.

curl https://api.vivgrid.com/v1/messages \
  -H "Authorization: Bearer $VIVGRID_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-sonnet-4-6",
    "max_tokens": 1024,
    "messages": [
      { "role": "user", "content": "Say hello in English, Chinese and Spanish." }
    ],
    "stream": true
  }'

Ideal use cases

• Everyday coding agents balancing quality, speed, and cost
• High-volume reasoning and content workflows
• Long-context analysis within a 1M-token budget
• Production assistants needing reliable tool use

Related models

• claude-opus-4-7 — the frontier Opus model
• claude-haiku-4-5 — the fastest, cheapest Claude
• gpt-5.4 — comparable OpenAI coding model