Claude Opus 4.7 New Parameters Guide

This article covers two key changes to reasoning control in Claude Opus 4.7, along with complete usage instructions for both the AIHubmix native API and the Chat unified interface. See also: Anthropic official announcement and model change log.

​1. New Reasoning Control Features

​✦ New xhigh Reasoning Effort Level

The new xhigh level sits between high and max, designed specifically for coding and agentic tasks, striking a better balance between capability and efficiency.

low  ──  medium  ──  high  ──  xhigh ★NEW  ──  max

​✦ Thinking Content Hidden by Default

In streaming responses, the thinking process is no longer shown by default. To receive a reasoning summary, explicitly pass the display field in your request:

"reasoning": {
  "effort": "xhigh",
  "display": "summarized"
}

Figure: Opus 4.7 new xhigh level — Agentic coding performance comparison (Source: Anthropic official)

​2. Claude Native API Reference

​The effort values for the Anthropic native API are consistent with the official specification:

​AIHubmix Claude Native API — Opus 4.7 Example

from anthropic import Anthropic

client = Anthropic(
    api_key="<AIHUBMIX_API_KEY>",
    base_url="https://aihubmix.com"
)

response = client.messages.create(
    model="claude-opus-4-7",
    max_tokens=16000,
    thinking={"type": "adaptive"},
    output_config={"effort": "xhigh"},  # Options: low / medium / high / xhigh / max
    messages=[
        {
            "role": "user",
            "content": "A snail is at the bottom of a 10-meter well. Each day it climbs 3 meters, but each night it slides back 2 meters. How many days does it take to reach the top?"
        }
    ]
)

print(response.content[-1].text)

​3. Reasoning Effort Support in the AIHubmix Chat Unified Interface

The AIHubMix Chat unified interface aligns with the OpenAI specification and controls reasoning intensity via reasoning.effort. Different Claude models are automatically mapped to the corresponding effort level:

​reasoning_effort (Reasoning Intensity Control) for Claude Models

Note: xhigh is natively supported only on Opus 4.7. Other Opus models automatically fall back to max, and the Sonnet series falls back to high.

​Chat Unified Interface — Opus 4.7 Example

from openai import OpenAI

client = OpenAI(
    base_url="https://aihubmix.com/v1",
    api_key="<AIHUBMIX_API_KEY>",
)

completion = client.chat.completions.create(
    model="claude-opus-4-7",
    # max_tokens=10000,  # Default is 4096; enable for longer outputs
    messages=[
        {
            "role": "user",
            "content": "A snail is at the bottom of a 10-meter well. Each day it climbs 3 meters, but each night it slides back 2 meters. How many days does it take to reach the top?"
        }
    ],
    extra_body={
        "reasoning": {"effort": "xhigh"}
    }
)

print(completion.choices[0].message.content)

​4. Controlling Thinking Content in the Chat Unified Interface

In the OpenAI-compatible interface, reasoning supports a display field to control whether thinking summaries are returned.Claude Opus 4.7 does not return thinking content by default. Set "display": "summarized" to enable it.

​Opus 4.7 — Thinking Summary Example

from openai import OpenAI

client = OpenAI(
    base_url="https://aihubmix.com/v1",
    api_key="<AIHUBMIX_API_KEY>",
)

completion = client.chat.completions.create(
    model="claude-opus-4-7",
    messages=[
        {
            "role": "user",
            "content": "A snail is at the bottom of a 10-meter well. Each day it climbs 3 meters, but each night it slides back 2 meters. How many days does it take to reach the top?"
        }
    ],
    extra_body={
        "reasoning": {"effort": "xhigh", "display": "summarized"}
    }
)

print(completion.choices[0].message.content)

​For further details, refer to the AIHubmix documentation or the Anthropic official docs.

Last updated: 2026-06-01