Claude Opus 5.5 is built for long-running agentic coding and knowledge work with always-on thinking and five effort levels. Served via the AWS route.
Provider: Anthropic
Category: text generation
Endpoint: /v1/chat/completions
Status: Available
Cost: --
Claude Opus 5.5 (AWS)
Claude Opus 5.5 is built for long-running agentic coding and knowledge work with always-on thinking and five effort levels. Served via the AWS route.
API access
Endpoint
POST /v1/chat/completions
Base URL
https://api.hiapi.ai
OpenAI Chat Completions compatible. Use one HiAPI key across all available models.
Input price
9,184 Credits
/ 1M tokens
Output price
45,920 Credits
/ 1M tokens
Context
1M
context window
Max output
128K
output tokens
Try Claude Opus 5.5 (AWS)
Ask a question to stream the answer and inspect token usage, latency, and estimated cost.
Claude Opus 5.5 (AWS) API Quickstart
Call Claude Opus 5.5 (AWS) with the OpenAI-compatible Chat Completions format. Copy a ready-to-use cURL, Python, or Node.js example below.
/v1/chat/completionscurl -X POST "https://api.hiapi.ai/v1/chat/completions" \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "claude-opus-5-5@aws",
"stream": false,
"messages": [
{
"role": "user",
"content": "请比较单体架构和微服务的取舍。"
}
]
}'Tip: Replace YOUR_API_KEY with your actual API key from the API Keys page.
Compatible with the OpenAI Chat Completions format. Set the base URL, API key, and model name to get started.
Claude Opus 5.5 (AWS) API Pricing
Billing follows the input, output, and cache token categories actually reported in usage. All prices below are shown per 1 million tokens.
- Input tokens
- 9,184 Credits/ 1M tokens
- Output tokens
- 45,920 Credits/ 1M tokens
Prompts and context sent to the model
Responses generated by the model
- Cache read
- 459.2 Credits/ 1M tokens
- Cache write
- 11,480 Credits/ 1M tokens
- Cache write (1h)
- 18,368 Credits/ 1M tokens
Claude Opus 5.5 (AWS) Model Specifications
These specifications reflect the current public HiAPI text request contract. Undisclosed capabilities are not inferred by the page.
- Streaming
- Supported
- Tool calling
- Not supported
- Structured JSON
- Not supported
- Reasoning
- Not supported
- Input modalities
- text
- Output modalities
- text
- Reasoning efforts
- -
- Max output
- 128K
About Claude Opus 5.5 (AWS)
Claude Opus 5.5 is built for long-running agentic coding and knowledge work with always-on thinking and five effort levels. Served via the AWS route.
HiAPI exposes this model through /v1/chat/completions. Test prompts and parameters in the Playground, then use the same HiAPI API key in your server application.
- Provider
- Anthropic
- Endpoint
- /v1/chat/completions
- Context window
- 1M
- Released
- 2026-09-22
How to Use Claude Opus 5.5 (AWS)
The Playground and API share the same model ID, so three steps take a prompt into production.
Step 1
Validate online
Test the system prompt, temperature, and output length in the Playground.
Step 2
Manage API keys
View an existing key or create another after signing in; one key works across all available models.
Step 3
Integrate your server
Send requests to /v1/chat/completions and track cost with the usage object.
Frequently asked questions
What is the Claude Opus 5.5 (AWS) API?
The Claude Opus 5.5 (AWS) API is a text generation endpoint available through one HiAPI API key.
How is the Claude Opus 5.5 (AWS) API priced?
Claude Opus 5.5 (AWS) API uses usage-based pricing. This page includes pricing, parameters, examples, and integration code.
How do I call the Claude Opus 5.5 (AWS) API?
Send a POST request to /v1/chat/completions with the model name, messages, and one API key. This page includes cURL, Python, and Node.js examples.
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