Models/anthropic

claude-sonnet-4.6· Released Feb 17, 2026

Name: claude-sonnet-4.6
Brand: anthropic

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. It excels at iterative development, complex codebase navigation, end-to-end project management with...

Input

From$2.805/M

Output

From$14.025/M

Context

Up to 1M

Max output

Up to 128K

Modalities

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Input and output show the lowest price across upstreams, for reference. Your actual prices are listed per upstream below.

Upstreams & pricing

Upstream	Context	Max output	Input $/1M	Output $/1M	Cached input $/1M
Zenlayer AI Gateway - anthropic (Global)From price	1M	128K	$2.805	$14.025	$0.2805

Routed in real time — you pay the listed price of whichever upstream serves your call.

How to call

curlrequest.sh

curl https://api.tkex.ai/v1/chat/completions \
  -H "Authorization: Bearer $TX_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "anthropic/claude-sonnet-4.6",
    "messages": [
      {"role": "user", "content": "Say hello in five words."}
    ]
  }'