Anthropic: claude-opus-5.5
claude-opus-5.5
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Claude Opus 5.5 is a frontier large language model from Anthropic, positioned as a top-tier member of the Claude family focused on maximum intelligence and reasoning quality rather than low cost or latency. As an Opus-tier model, it is intended for demanding professional and enterprise use cases such as complex analysis, multi-step reasoning, sophisticated coding help, and high-quality long-form writing. It typically offers a large context window, strong instruction-following, and robust safety alignment, making it suitable for workflows that prioritize depth, reliability, and nuanced judgment over raw speed or minimal price. Within Anthropic’s lineup, it sits above lighter, faster models like Haiku-style variants, trading higher compute requirements for better performance and capabilities.
Pricing
Current price per 1,000,000 tokens. Every request is billed automatically from its exact usage.
Included in plans
Statistics
Live performance and usage of this model, aggregated across all users.
Usage over time
Token usage
Last 30 days- Input tokens
- 13,6K 86,9%
- Output tokens
- 2K 13,1%
- Avg. input per request
- 847
- Avg. output per request
- 128
- Largest request
- 4,118 tokens
Reliability
Last 30 days- Successful
- 16 100%
- Failed
- 0 0%
- 200 Success 16 100%
Response time
Successful requests · last 30 daysLast 24 hours
Latency (ms)
Requests per hour
Usage rhythm
Last 30 days · site timezone- Busiest hour: 03:00
- Busiest weekday: Wednesday
- Busiest day: 30 September (16 requests)
All-time record
- Total requests
- 16
- Total tokens
- 15,6K
- Active days
- 1
- First request
- 30 September 2026
- Last request
- 3 هفته ago
API
Call this model from any OpenAI-compatible client using your API token.
curl https://apiex.cloud/api/v1/chat/completions \
-H "Authorization: Bearer $NEW_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "claude-opus-5.5",
"messages": [
{
"role": "user",
"content": "Explain quantum entanglement in one paragraph."
}
],
"temperature": 0.7
}'Authentication
Every request must include an Authorization: Bearer <TOKEN> header. Generate a token from your account's API Keys page — its access to models is set automatically from your active plans and redeemed codes, and you can set its rate limit and IP restrictions.
| Parameter | Type | Description |
|---|---|---|
model | string, required | This model's ID, exactly as shown above. |
messages | array, required | Conversation history as role/content objects (system, user, assistant). |
temperature | number, optional | Sampling randomness, typically 0–2. |
max_tokens | integer, optional | Upper limit on tokens generated in the reply. |
top_p | number, optional | Nucleus-sampling threshold, as an alternative to temperature. |
stream | boolean, ignored | Responses are always returned in full so the exact cost can be billed; streaming is not available. |
Replace YOUR_API_KEY with a token from your account, then see the full API reference for every parameter.
Frequently asked questions
What is claude-opus-5.5?
Claude Opus 5.5 is a frontier large language model from Anthropic, positioned as a top-tier member of the Claude family focused on maximum intelligence and reasoning quality rather than low cost or latency. As an Opus-tier model, it is intended for demanding professional and enterprise use cases such as complex analysis, multi-step reasoning, sophisticated coding help, and high-quality long-form writing. It typically offers a large context window, strong instruction-following, and robust safety alignment, making it suitable for workflows that prioritize depth, reliability, and nuanced judgment over raw speed or minimal price. Within Anthropic’s lineup, it sits above lighter, faster models like Haiku-style variants, trading higher compute requirements for better performance and capabilities.
How much does claude-opus-5.5 cost?
Input tokens are priced at $4,80 per 1,000,000 tokens and output tokens at $24,00 per 1,000,000 tokens. Pricing is billed automatically per request; no separate plan is required.
What is the context length of claude-opus-5.5?
claude-opus-5.5 supports a context window of up to 1,000,000 tokens.
Does claude-opus-5.5 support image input?
Yes, claude-opus-5.5 accepts image input in addition to text.
Which provider is claude-opus-5.5 from?
claude-opus-5.5 is developed by Anthropic and made available on this gateway through our routing infrastructure.
When was claude-opus-5.5 added to this gateway?
claude-opus-5.5 has been available on this gateway since September 23, 2026.
Is claude-opus-5.5 currently available?
Yes, claude-opus-5.5 is active and can be used right now through this gateway.
