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Anthropic: Claude Opus 5.5

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anthropic/claude-opus-5.5
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Claude Opus 5.5 succeeds Claude Opus 5 in Anthropic's Opus line, targeting demanding reasoning, coding, and long-horizon agentic work. It accepts text, images, and files and produces text, with always-on adaptive reasoning controlled through effort. It supports tool use, PDF input, web search, and prompt caching. Context window: 1M tokens, output: 128K. Its per-token price is lower than Claude Opus 5, making repeated context and extended sessions more affordable. Available through Ofox via OpenAI and Anthropic protocols.

Context Window
1M
Max Output Tokens
128K
Released
2026-09-22
Capabilities
VisionFunction CallingReasoningPrompt CachingWeb SearchPDF Input
Available Providers
Bedrock
Supported Protocols
openaianthropic

Providers

Bedrockprovider.type: "aws_bedrock"
Input Tokens
$4/M
Output Tokens
$20/M
Cache Read
$0.2/M
Cache Write (5 min)
$5/M
Cache Write (1 hour)
$8/M
Web Search
$0.015/R
Protocols
openai/v1/chat/completions/v1/responses
anthropic

Playground

Open in OfoxChat

Code Examples

import anthropic


client = anthropic.Anthropic(
    base_url="https://api.ofox.run/anthropic",
    api_key="YOUR_OFOX_API_KEY",
)


message = client.messages.create(
    model="anthropic/claude-opus-5.5",
    max_tokens=1024,
    messages=[
        {"role": "user", "content": "Hello!"}
    ],
)


print(message.content[0].text)

Uptime & Status

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Frequently Asked Questions

Anthropic: Claude Opus 5.5 on Ofox.ai costs $4/M per million input tokens and $20/M per million output tokens. Pay-as-you-go, no monthly fees.