Claude Opus 4.8 supports text generation, streaming responses, and tool calling through an OpenAI-compatible API. This route may include additional upstream context. For the cleanest native API experience, choose the Claude Opus 4.8 AWS model.
Provider: Anthropic
Category: text generation
Endpoint: /v1/chat/completions
Status: Available
Cost: --
Claude Opus 4.8
Claude Opus 4.8 supports text generation, streaming responses, and tool calling through an OpenAI-compatible API. This route may include additional upstream context. For the cleanest native API experience, choose the Claude Opus 4.8 AWS model.
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
4,588.235294 Credits
/ 1M tokens
Output price
22,941.176471 Credits
/ 1M tokens
Context
1M
context window
Max output
128K
output tokens
Try Claude Opus 4.8
Ask a question, upload images, or paste from clipboard. Then inspect the streamed answer, token usage, latency, and estimated cost.
Upload or paste up to 4 images, 10 MB each. Images are safety reviewed.
Claude Opus 4.8 API Quickstart
Call Claude Opus 4.8 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-4-8",
"stream": false,
"messages": [
{
"role": "user",
"content": "A cat walking on the beach at sunset"
}
]
}'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.
Combine text and image_url in the Chat Completions content array. Use a public HTTPS image URL.
/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-4-8",
"stream": false,
"messages": [
{
"role": "user",
"content": [
{
"type": "text",
"text": "Describe the main subject, setting, and important visual details."
},
{
"type": "image_url",
"image_url": {
"url": "https://static.hiapi.ai/example/subject-1.jpg"
}
}
]
}
]
}'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 4.8 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
- 4,588.235294 Credits/ 1M tokens
- Output tokens
- 22,941.176471 Credits/ 1M tokens
Prompts and context sent to the model
Responses generated by the model
- Cache read
- 458.823529 Credits/ 1M tokens
- Cache write
- 5,735.294118 Credits/ 1M tokens
- Cache write (1h)
- 9,176.470588 Credits/ 1M tokens
Claude Opus 4.8 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 · image · file
- Output modalities
- text
- Reasoning efforts
- -
- Max output
- 128K
About Claude Opus 4.8
Claude Opus 4.8 supports text generation, streaming responses, and tool calling through an OpenAI-compatible API. This route may include additional upstream context. For the cleanest native API experience, choose the Claude Opus 4.8 AWS model.
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
- Not disclosed
How to Use Claude Opus 4.8
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 4.8 API?
The Claude Opus 4.8 API is a text generation endpoint available through one HiAPI API key.
How is the Claude Opus 4.8 API priced?
Claude Opus 4.8 API uses usage-based pricing. This page includes pricing, parameters, examples, and integration code.
How do I call the Claude Opus 4.8 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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