Anthropic / API REFERENCE

claude-sonnet-5-5 API pricing & integration

Targets everyday development, document work and well-scoped agent workflows. Compare quality and cost across complete tasks.

Estimate a request →Integration guide →

Catalog identifier: claude-sonnet-5-5
Channel protocols: Messages / Chat Completions
Availability: Verify account channels
Snapshot date: Oct 15, 2026

Platform price snapshot

Rates include the selected group multiplier. All token rates below are USD per million tokens; request rates are separate. A pricing boundary is not the model’s maximum context window.

Prompt tier (tokens)	Input	Output	Cache read	Cache write
≥ 0	$0.4	$2	$0.04	$0.5

Group: Claude code 特惠满分过检. Cache duration, additional modalities, time-of-use rules and channel restrictions may affect the final bill. Check the interactive market and account terms.

Vendor reference pricing

Reference identifier: claude-sonnet-5-5 · Checked Oct 15, 2026

Prompt tier (tokens)	Input	Output	Cache read	Cache write
≥ 0	$2	$10	$0.1	$2.5

Original vendor pricing ↗

Standard reference rates only; batch, priority, regional or tool charges may differ.

Tasks to evaluate

Bounded bug fixes, templated documents and tool-assisted workflows. Keep test environments and acceptance criteria consistent.

Limits and cost considerations

Caching, effort, tools and retries affect task costs. Vendor results do not establish outcomes for your workflow.

Vendor capability announcement ↗

Source reviewed: Oct 16, 2026

Compare prices and estimate a request

Published price snapshot, USD per million tokens. Account availability and the actual bill must be checked separately. Route names retain their configured labels.

Snapshot checked: 2026-10-15

Base-tier rates are available below without JavaScript. Enable JavaScript to filter or calculate.

Model	Provider	Input / 1M	Output / 1M	Per-request rate
claude-sonnet-5-5	Anthropic	$0.4	$2	—

Token estimates are available for reviewed text-model routes and cover uncached text input and output only. It excludes cache writes, tools, other modalities, time-of-use adjustments, retries and processing premiums. A rate tier is not a context limit. Missing prices stay unavailable rather than becoming zero. Selection uses the lowest input rate, not necessarily the lowest total task cost.

A small integration acceptance check

POSIX shell template for a channel offering Chat Completions. Set the account-provided base URL (normally including /v1) and API key in your terminal. Confirm this exact identifier is enabled. Running it makes a billable request; this page does not send it.

curl "$YOUJIE_BASE_URL/chat/completions" \
  -H "Authorization: Bearer $YOUJIE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"claude-sonnet-5-5","messages":[{"role":"user","content":"Return a JSON object with the sum of 17 and 25 under the key total. No other text."}],"stream":false}'

Acceptance target: parse the final message as JSON and verify total equals 42. This is a known mathematical target, not a recorded model response. Also inspect HTTP status, response structure and actual usage. No tool calling or strict-schema feature is assumed.

Inspect errors, credentials and protocol paths →

Integration checks

Confirm the exact identifier and enabled group in your account.
Choose a supported protocol, then keep the API key on your server.
Run a small representative task and inspect usage, errors and output quality.

Request examples and troubleshooting →

Related models to evaluate

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claude-haiku-5-5

Designed for high-volume summarization, classification and bounded subagent tasks, with adjustable effort.

Messages · Chat CompletionsPricing & details →