claude-sonnet-4-5-20250929
NixAPI price, from
USD per 1M tokens · via group Kiro-Claude-1 · Official list price $3 / $15Save 85%
About claude-sonnet-4-5-20250929
Claude Sonnet 4.5 is the world's best coding model, the most powerful model for building complex agents, and the top model for computer use. It shows significant advances in reasoning and math.
Price by routing group
Pick a group in the console when you create a key. Status is live from the router. Live status by group →
| Group | Group status | Model status | Multiplier | Input | Output | Cache read | Cache write |
|---|---|---|---|---|---|---|---|
Kiro-Claude-1 | … | ×0.1491 | $0.4474 | $2.237 | $0.0447 | $0.5592 | |
Claude-Code-1 | … | ×0.2982 | $0.8947 | $4.474 | $0.0895 | $1.118 | |
Claude-Code-2 | … | ×0.4971 | $1.491 | $7.456 | $0.1491 | $1.864 | |
AWS-Bedrock-1 | … | ×0.7456 | $2.237 | $11.184 | $0.2237 | $2.796 | |
AWS-Claude-1 | … | ×0.7456 | $2.237 | $11.184 | $0.2237 | $2.796 | |
AWS-Bedrock-2 | … | ×0.9941 | $2.982 | $14.912 | $0.2982 | $3.728 | |
AWS-Claude-2 | … | ×1.4912 | $4.474 | $22.368 | $0.4474 | $5.592 | |
AWS-Claude-3 | … | ×1.859 | $5.577 | $27.885 | $0.5577 | $6.971 | |
Anthropic-Claude-1 | … | ×1.859 | $5.577 | $27.885 | $0.5577 | $6.971 |
USD per 1M tokens
Supported endpoints
Call claude-sonnet-4-5-20250929 in one request
Works with the OpenAI SDK and any OpenAI-compatible client. Replace the key with your own.
curl https://api.nixapi.com/v1/chat/completions \
-H "Authorization: Bearer $NIXAPI_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "claude-sonnet-4-5-20250929",
"messages": [{"role": "user", "content": "Hello!"}]
}'from openai import OpenAI
client = OpenAI(base_url="https://api.nixapi.com/v1", api_key="sk-…")
resp = client.chat.completions.create(
model="claude-sonnet-4-5-20250929",
messages=[{"role": "user", "content": "Hello!"}],
)
print(resp.choices[0].message.content)import OpenAI from 'openai';
const client = new OpenAI({ baseURL: 'https://api.nixapi.com/v1', apiKey: process.env.NIXAPI_KEY });
const resp = await client.chat.completions.create({
model: "claude-sonnet-4-5-20250929",
messages: [{ role: 'user', content: 'Hello!' }],
});
console.log(resp.choices[0].message.content);Questions about claude-sonnet-4-5-20250929
How much does claude-sonnet-4-5-20250929 cost on NixAPI?
From $0.4474 per 1M input tokens and $2.237 per 1M output tokens in the Kiro-Claude-1 group, about 85% below the official list price. Prices are pay-as-you-go in USD with no monthly minimum.
How do I call claude-sonnet-4-5-20250929?
Point any OpenAI-compatible client at https://api.nixapi.com/v1, use your NixAPI key and set the model to "claude-sonnet-4-5-20250929".
Which routing groups serve claude-sonnet-4-5-20250929?
claude-sonnet-4-5-20250929 is available in 9 routing groups: Kiro-Claude-1, Claude-Code-1, Claude-Code-2, AWS-Bedrock-1, AWS-Claude-1, AWS-Bedrock-2, AWS-Claude-2, AWS-Claude-3, Anthropic-Claude-1. The lowest price is in Kiro-Claude-1.