Models
Claude Sonnet 5
Model id: anthropic/claude-sonnet-5
- Agentic
- Coding
- Reasoning
- Vision
- Long context
- Tools
- Writing
- Legal
- Government
Anthropic’s Claude Sonnet 5, the practical default combining speed and strong intelligence.
Best for
most coding, agents, analysis, and knowledge work in production.
- Provider
- Anthropic
- Context window
- 1,000,000
- Release date
- 2026-05-01
- Reasoning effort
- lowmediumhighmaxDefault: high
Pricing
Input
$3.0846 / 1M
Cached input
$0.3085 / 1M
Output
$15.4231 / 1M
Cache write
$3.8558 / 1M
Cache write (1h)
$6.1692 / 1M
Web search
Per successful search
$0.0154 / search
Billed on top of tokens when the model uses web search.
Amounts in Canadian dollars, converted at the Bank of Canada indicative rate (2026-09-21).
Performance
Reading
Last 7 days
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Activity
Tokens
—
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Top 5 tools · last 7 days
Not enough data to display tool activity.
Availability
Availability (%)
Last 7 days
- Operational probes
- 99.98% over 7 days
- Samples
- 9,207
Quick start
Call the API with a tonia_ key and the exact model id below.
curl
curl https://pass.tonia.ca:8443/v1/chat/completions \
-H "Authorization: Bearer $TONIA_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "anthropic/claude-sonnet-5",
"messages": [
{
"role": "user",
"content": "Bonjour"
}
]
}'Python (OpenAI SDK)
import os
from openai import OpenAI
client = OpenAI(
base_url="https://pass.tonia.ca:8443/v1",
api_key=os.environ["TONIA_API_KEY"],
)
response = client.chat.completions.create(
model="anthropic/claude-sonnet-5",
messages=[{"role": "user", "content": "Bonjour"}],
)TypeScript (OpenAI SDK)
import OpenAI from "openai";
const client = new OpenAI({
baseURL: "https://pass.tonia.ca:8443/v1",
apiKey: process.env.TONIA_API_KEY,
});
const response = await client.chat.completions.create({
model: "anthropic/claude-sonnet-5",
messages: [{ role: "user", content: "Bonjour" }],
});With the Anthropic API (/v1/messages), Claude models are used without the anthropic/ prefix.