AI Rate CardAnthropic: Claude Sonnet 4 (retires Oct 15) · kilo
may be withdrawn
Claude Sonnet 4 significantly enhances the capabilities of its predecessor, Sonnet 3.7, excelling in both coding and reasoning tasks with improved precision and controllability. Achieving state-of-the-art performance on SWE-bench (72.7%),...
Input, $/1M $3.00
Output, $/1M $15.00
Subscription, $/mo $19.00
Kilo Pass optional
Context 200 000
Max output 64 000
Accepts files, images, pdf, text
Last checked 04.11.2026 12:26:37 UTC
Source provider's page
Price alerts
API
OpenAI-compatible API: the official OpenAI SDKs work with this base URL. Replace YOUR_API_KEY with your key from the provider.
| API base URL | |
|---|---|
| Endpoint | |
| Model id | |
curl
curl https://api.kilo.ai/api/gateway/chat/completions \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model": "anthropic/claude-sonnet-4", "messages": [{"role": "user", "content": "Hello!"}], "max_tokens": 256}'Python
import requests
r = requests.post(
"https://api.kilo.ai/api/gateway/chat/completions",
headers={"Authorization": "Bearer YOUR_API_KEY"},
json={
"model": "anthropic/claude-sonnet-4",
"messages": [
{
"role": "user",
"content": "Hello!"
}
],
"max_tokens": 256
},
)
print(r.json())JavaScript
const r = await fetch("https://api.kilo.ai/api/gateway/chat/completions", {
method: "POST",
headers: {Authorization: "Bearer YOUR_API_KEY", "Content-Type": "application/json"},
body: JSON.stringify({
"model": "anthropic/claude-sonnet-4",
"messages": [
{
"role": "user",
"content": "Hello!"
}
],
"max_tokens": 256
}),
});
console.log(await r.json());Request (JSON)
{
"model": "anthropic/claude-sonnet-4",
"messages": [
{
"role": "user",
"content": "Hello!"
}
],
"max_tokens": 256
}Response (JSON)
{
"id": "chatcmpl-...",
"object": "chat.completion",
"model": "anthropic/claude-sonnet-4",
"choices": [
{
"index": 0,
"message": {
"role": "assistant",
"content": "Hi! How can I help?"
},
"finish_reason": "stop"
}
],
"usage": {
"prompt_tokens": 9,
"completion_tokens": 12,
"total_tokens": 21
}
}The address is taken from the provider's model list; check it against the provider's documentation.
Source: AI Rate Card, https://airatecard.com/en/c/offer%3Akilo%7Canthropic/claude-sonnet-4, prices checked 2026-11-04; seller's page: https://kilo.ai
Technical details
ID: offer:kilo|anthropic/claude-sonnet-4