Claude

Claude models offer long context windows, strong reasoning, and extended thinking. They support tools, structured output, and prompt caching. Call them through any text format — including the native Messages API.

Models

Model	Code	Notes
Claude Opus 4.8	claude-opus-4.8	Most capable; adaptive thinking.
Claude Opus 4.7	claude-opus-4.7	Adaptive thinking.
Claude Opus 4.6	claude-opus-4.6	Adaptive thinking.
Claude Opus 4.5	claude-opus-4.5	Non-adaptive thinking (budget_tokens).
Claude Sonnet 4.6	claude-sonnet-4.6	Balanced; adaptive thinking.
Claude Sonnet 4.5	claude-sonnet-4.5	Balanced; non-adaptive thinking.
Claude Haiku 4.5	claude-haiku-4.5	Fastest; non-adaptive thinking.

Capabilities

• tools, tool_choice, parallel_tool_calls
• temperature, top_p, max_tokens, response_format
• Extended thinking via thinking or reasoning_effort — normalised per model.

See Per-Model Details → Claude 4+ for thinking modes and budget_tokens rules.

Example

from openai import OpenAI

client = OpenAI(base_url="https://llm.siraya.ai/v1", api_key="<API_KEY>")
resp = client.chat.completions.create(
    model="claude-opus-4.8",
    messages=[{"role": "user", "content": "Summarise this contract."}],
)
print(resp.choices[0].message.content)