Claude Opus 4.8
An earlier Opus, kept for existing workflows.
Model IDclaude-opus-4-8
Good for
- Prompts already tuned for it
Context window1,000,000 tokens
CategoryText
Credit rates
| Type | Credits | About |
|---|---|---|
| Inputper 1M tokens | 316,085 | HK$31.61 |
| Outputper 1M tokens | 1,580,425 | HK$158.04 |
10,000 credits = HK$1. Credits come with your monthly plan and each request is charged by what it uses. Every request is itemised under Usage in the console.
Which plans include it
| Plan | Included | Per month, roughly (messages) |
|---|---|---|
| Taster HK$28 | ✓ | ≈ 112 |
| Everyday HK$128 | ✓ | ≈ 451 |
| Advanced HK$288 | ✓ | ≈ 1,174 |
| Professional HK$588 | ✓ | ≈ 2,530 |
Monthly counts assume the whole month goes to this one use; chat, images and video share one credit pool. Compare plans →
How to use it
Through the API
Create an API key in the console, then call it by its model ID:
curl https://api.essevin.com/v1/messages \
-H "x-api-key: $ESSEVIN_API_KEY" \
-H "anthropic-version: 2023-06-01" \
-H "content-type: application/json" \
-d '{
"model": "claude-opus-4-8",
"max_tokens": 1024,
"messages": [{"role": "user", "content": "Hello"}]
}'More in this family
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