Anthropic: Claude Opus 5.5

Overview

Anthropic's recommended starting model for long-running agentic coding and knowledge work.

Provider

Anthropic

Modality

Text and image

Input

text, image

Output

text

Max output

128,000 tokens

Weights

Closed

Supported parameters

tools, structured_outputs, reasoningProvider's model page, checked October 8, 2026.

Distillable

NoLicence or terms, checked October 8, 2026.

Tags

reasoning, coding, agents, vision, long-context

Docs

Provider documentation

Data policy

Prompts go to

Anthropic (global routing by default)

Retention

Not used for model training without express permission, per Anthropic's API retention doc, conversation content is not retained by default except for Covered Models that require 30-day retention, flagged content and legal holds can be kept longer

Zero data retention

Available

Region

Global by default, US-only inference via inference_geo at 1.1x pricing (Claude 4.6 and later)

Policy

Anthropic data policy

Summarised from the provider's published terms. The provider's own policy is what applies.

Where you can run it

How Claude Opus 5.5 can be deployed, bought and reached through Safeguard.

Deployment

Public cloudPrivate cloud

Procurement

Not published yet

Inference regions

🇦🇺AustraliaEUEuropean Union🇬🇧United Kingdom🇯🇵Japan🇺🇸United StatesCloud provider's availability page, checked October 8, 2026.

Closed weights stay with the provider, so this model runs in the provider's cloud, never on-prem or air-gapped.

Pricing

Notes

Base price, full 1M context at standard rate. Cache hits $0.20/1M. Batch 50% off. US-only inference 1.1x.

Source

Anthropic pricing , last verified October 8, 2026

No markup on model usage: you pay the provider's list price.

API

OpenAI-compatible. Your API key and access to this model are set up for your workspace when you choose Use with Safeguard.

from openai import OpenAI

client = OpenAI(
    base_url="https://api.safeguard.sh/gpt/v1",
    api_key="SAFEGUARD_API_KEY",
)

response = client.chat.completions.create(
    model="anthropic/claude-opus-5-5",
    messages=[{"role": "user", "content": "Hello"}],
)
print(response.choices[0].message.content)

Base URL https://api.safeguard.sh/gpt/v1, model anthropic/claude-opus-5-5.