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claude-opus-5-5 API pricing & access
claude-opus-5-5 API pricing: $4 per 1M tokens. An Anthropic model for long-running agentic coding and knowledge work, supporting text and…
claude-opus-5-5 API access
An Anthropic model for long-running agentic coding and knowledge work, supporting text and image input with text output. Available features and limits depend on the selected channel.
Compare supported API endpoints and capabilities, then access claude-opus-5-5 through the unified API gateway.
- Category
- text
- Context length
- 1000000 tokens
- Maximum output
- 128000 tokens
- Supported APIs
- Anthropic Messages API, OpenAI Chat Completions API
- API endpoints
- POST /v1/messages, POST /v1/chat/completions
- Input modalities
- text, image, file
- Output modalities
- text
- Capabilities
- structured output, function calling, vision, caching, reasoning
claude-opus-5-5 API pricing
- Base input price
- $4 per 1M tokens
- Base output price
- $20 per 1M tokens
Base prices are shown in USD before group-specific adjustments. Open the live pricing page for current access-group prices.
About claude-opus-5-5
Claude Opus 5.5 supports coding, agent workflows and knowledge work. The official model accepts text and images and produces text, with a 1M-token context, up to 128K output tokens and adaptive thinking. The catalog’s existing file-input metadata is retained; supported file formats depend on the selected route.
Official reference, checked 2026-10-13.
Use cases and prompting
Use the Anthropic sample on this page to verify a short task and actual usage. Provide failing cases and target behavior for code reviews, and require evidence citations for document tasks. Keep model suggestions separate from application execution and define stopping criteria for tool workflows.
How to call claude-opus-5-5
claude-opus-5-5 is served through tbuy's unified gateway. Existing OpenAI or Anthropic SDK code keeps working: point base_url at https://modelsok.com and use your tbuy API key.
curl (OpenAI-compatible)
curl https://modelsok.com/v1/chat/completions \
-H "Authorization: Bearer $API_KEY" \
-H "Content-Type: application/json" \
-d '{"model": "claude-opus-5-5", "messages": [{"role": "user", "content": "Hello"}]}'Python (openai SDK)
from openai import OpenAI
client = OpenAI(base_url="https://modelsok.com/v1", api_key="YOUR_API_KEY")
response = client.chat.completions.create(
model="claude-opus-5-5",
messages=[{"role": "user", "content": "Hello"}],
)
print(response.choices[0].message.content)Python (anthropic SDK)
from anthropic import Anthropic
client = Anthropic(base_url="https://modelsok.com", api_key="YOUR_API_KEY")
message = client.messages.create(
model="claude-opus-5-5",
max_tokens=1024,
messages=[{"role": "user", "content": "Hello"}],
)
print(message.content[0].text)Related pages
Frequently asked questions about claude-opus-5-5
What is claude-opus-5-5?
An Anthropic model for long-running agentic coding and knowledge work, supporting text and image input with text output. Available features and limits depend on the selected channel.
How do I call claude-opus-5-5?
Create an API key with access to claude-opus-5-5, then use the exact model ID and a supported endpoint from the API access section. Request fields depend on the selected endpoint.
How is claude-opus-5-5 priced?
Pricing depends on the selected provider group and the model billing unit. Refer to the current input, output, request, or media prices in the pricing section.
What is the context window of claude-opus-5-5?
The model catalog lists a context window of 1000000 tokens. Check the selected endpoint for request limits.
What is the maximum output of claude-opus-5-5?
The model catalog lists a maximum output of 128000 tokens. Your request settings may set a lower limit.
How should I evaluate claude-opus-5-5 for my project?
Start with the use cases and prompting guidance on this page, then evaluate the model with representative inputs from your project.