Claude Sonnet 5.5 API pricing
$1.20 in, $3.00 out per million tokens, 40% under Anthropic's list price on input and 70% on output.
claude-sonnet-5-5managed routeAnthropic SDKOpenAI SDK
Price · per million tokens, USD
| Tokens | Anthropic list price | UplinkSwitch | Saving |
|---|---|---|---|
| Input | $2.00 | $1.20 | -40% |
| Cached input | $0.10 | $0.075 | -25% |
| Output | $10.00 | $3.00 | -70% |
List price: Anthropic's published rate, read October 2026. Same price on every host.
Real-model check: Same fingerprint since Oct 12
Claude Sonnet 5.5 specs
- Context window
- 1,000,000 tokens
- Max output
- 128,000 tokens
- Input
- text and image
- Released
- September 28, 2026
Claude Sonnet 5.5 API · base URL and key
Python · Anthropic SDK
from anthropic import Anthropic
client = Anthropic(
base_url="https://api.uplinkswitch.com/v1",
api_key="sk-uplink-live-...",
)
message = client.messages.create(
model="claude-sonnet-5-5",
max_tokens=1024,
messages=[{"role": "user", "content": "Summarize this in one line."}],
)
print(message.content[0].text)TypeScript · Anthropic SDK
import Anthropic from '@anthropic-ai/sdk';
const client = new Anthropic({
baseURL: 'https://api.uplinkswitch.com/v1',
apiKey: 'sk-uplink-live-...',
});
const message = await client.messages.create({
model: 'claude-sonnet-5-5',
max_tokens: 1024,
messages: [{ role: 'user', content: 'Summarize this in one line.' }],
});
console.log(message.content[0]);Claude Code
export ANTHROPIC_BASE_URL="https://api.uplinkswitch.com/v1"
export ANTHROPIC_AUTH_TOKEN="sk-uplink-live-..."
export ANTHROPIC_MODEL="claude-sonnet-5-5"
claudePython · OpenAI SDK
from openai import OpenAI
client = OpenAI(
base_url="https://api.uplinkswitch.com/v1",
api_key="sk-uplink-live-...",
)
completion = client.chat.completions.create(
model="claude-sonnet-5-5",
messages=[{"role": "user", "content": "Summarize this in one line."}],
)
print(completion.choices[0].message.content)TypeScript · OpenAI SDK
import OpenAI from 'openai';
const client = new OpenAI({
baseURL: 'https://api.uplinkswitch.com/v1',
apiKey: 'sk-uplink-live-...',
});
const completion = await client.chat.completions.create({
model: 'claude-sonnet-5-5',
messages: [{ role: 'user', content: 'Summarize this in one line.' }],
});
console.log(completion.choices[0].message.content);curl
curl https://api.uplinkswitch.com/v1/messages \
-H "x-api-key: sk-uplink-live-..." \
-H "anthropic-version: 2023-06-01" \
-H "content-type: application/json" \
-d '{"model":"claude-sonnet-5-5","max_tokens":256,"messages":[{"role":"user","content":"Hello"}]}'What would it cost? · paste a prompt, priced before you send it
Input is counted at about 4 characters per token.
Cheapest first. A real request is billed on the provider's own token count. Same estimate as JSON: POST https://api.uplinkswitch.com/v1/estimate, no key needed.
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Claude Sonnet 5.5 questions
- How much does the Claude Sonnet 5.5 API cost?
- $1.20 per million input tokens and $3.00 per million output tokens, with cached input at $0.075. Anthropic's list price is $2.00 and $10.00, so this is 40% under Anthropic's list price on input and 70% on output.
- Is Claude Sonnet 5.5 free?
- It is pay as you go: prepaid credit from $10, with no subscription or monthly fee, billed per token. A 1,000-token prompt with a 500-token reply costs about $0.0027.
- What is the Claude Sonnet 5.5 context window?
- Claude Sonnet 5.5 has a 1,000,000-token context window, with up to 128,000 output tokens per request. It takes text and image input.
- What is the Claude Sonnet 5.5 model id?
- claude-sonnet-5-5. Send it as the model through the Anthropic SDK or OpenAI SDK with base URL https://api.uplinkswitch.com/v1.
- Does Claude Sonnet 5.5 work with Claude Code?
- Yes. Set ANTHROPIC_BASE_URL to https://api.uplinkswitch.com/v1, ANTHROPIC_AUTH_TOKEN to your key and ANTHROPIC_MODEL to claude-sonnet-5-5.
- Is it the real Claude Sonnet 5.5?
- Every day each model gets the same test prompt, and a model always counts that prompt the same way; a swapped one would not. Claude Sonnet 5.5's latest result: Same fingerprint since Oct 12.