AnthropicAvailable on TokenCenter

Claude Sonnet 4.6

anthropic/claude-sonnet-4.6

Sonnet 4.6 is Anthropic's most capable Sonnet-class model yet, with frontier performance across coding, agents, and professional work.

Input price: $3.00 / 1M tokens
Output price: $15.00 / 1M tokens
Context window: 1M tokens
Max output: 128K tokens
Accepts: Text, Images, Files
Returns: Text

Example: 1,000 requests with 1,000 input and 500 output tokens each would cost about $10.50 (1M input tokens × $3.00 + 0.5M output tokens × $15.00). Estimate your own usage.

Prices are the provider’s own per-token rates with zero markup, from our price list as of Oct 18, 2026. If a call has extra provider charges (images, audio, web search, cached prompts), you pay the reported cost.

Get API key Try in chat Compare

Call it from your code

curl https://api.tokenctr.com/v1/chat/completions \
  -H "Authorization: Bearer $TOKENCENTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "anthropic/claude-sonnet-4.6", "messages": [{"role": "user", "content": "Hello!"}]}'

Works with any OpenAI-compatible SDK: set the base URL to https://api.tokenctr.com/v1. Quickstart

Benchmarks

Artificial Analysis

Intelligence index: 30.1
Coding index: 63
Agentic index: 31.8

Design Arena

Category	Rank	Elo	Win rate
Agents: Godot game dev	12	1226	60.6%
Agents: Android native	13	1211	62%
Agents: Full-stack	14	1213	64.3%
Agents: Mobile apps	14	1209	63.6%
Agents: Agentic game dev	16	1177	52.2%
Models: ASCII art	18	1238	60.1%
Models: Data visualization	20	1279	58.2%
Models: Websites	21	1286	60%
Agents: Web apps	24	1184	57%
Models: Code	24	1278	59.4%
Models: SVG	25	1196	58.7%
Models: UI components	30	1271	58.3%
Models: Game dev	34	1262	58.8%
Models: 3D	38	1235	57.6%

Source: Artificial Analysis indexes and Design Arena results as published in OpenRouter’s model data, fetched Oct 15, 2026. Higher is better. Not measured by TokenCenter. See all rankings.

Supported request parameters