Anthropic: Claude Opus 4.5

Flagship Claude model for deep reasoning, coding, and long-horizon agents

Model lab: Anthropic
Model family: claude-opus

Modalitiestext, image, pdf → text

Context window200,000

Maximum output64,000

InputUSD 4 / 1M tokens

OutputUSD 20 / 1M tokens

Try now

Quickstart

Use your Moduck API Key, set the API base URL to https://api.moduck.ai/v1, and set the model parameter to anthropic/claude-opus-4-5-20251101.

import os
import requests

base_url = "https://api.moduck.ai/v1"
api_key = os.environ["MODUCK_API_KEY"]
model_id = "anthropic/claude-opus-4-5-20251101"

response = requests.post(
    f"{base_url}/chat/completions",
    headers={
        "Authorization": f"Bearer {api_key}",
        "Content-Type": "application/json",
    },
    json={
        "model": model_id,
        "messages": [{"role": "user", "content": "Hello!"}],
        "stream": False,
    },
    timeout=60,
)
response.raise_for_status()
print(response.json())

Use the familiar OpenAI-style chat request format to make model integration easier.

Claude Opus 4.5 API Pricing

Type	Price information
Input	USD 4 / 1M tokens
Output	USD 20 / 1M tokens
Cached input	USD 0.4 / 1M tokens
Cache write	USD 5 / 1M tokens

Benchmarks

Non-reasoning

Intelligence Index · v4.323.7

Coding Index—

Agentic Index—

Benchmark	Score	Measurement	Source
SWE-Bench Pro	45.89	resolve rate · Dataset: public

Performance

Output speed50.36 tokens/s

Time to first token1.13 s

Time to first answer token—

End-to-end response time—

Measurement variant	Output speed	Time to first token	Time to first answer token	End-to-end response time
Non-reasoning	50.36 tokens/s	1.13 s	—	—

Performance trends

Throughput50.36 tok/sCurrent

Time to first token1.13 sCurrent

End-to-end latency7.7 sCurrent

Throughput

Current50.36 tok/s

Window average50.2 tok/s

Time to first token

Current1.13 s

Window average1.2 s

End-to-end latency

Current7.7 s

Window average7.5 s

Tail latency (P99)

Current16.6 s

Window average16.6 s

Prompt cache hit rate

Current18.2%

Window average24.5%

Error rate

Current0.0%

Window average0.1%

Availability

Uptime100%At least one provider responded

Availability100%Requests actually served

Error rate0%Share of failed requests

Served requests, hour by hour

24 hours agoNow

Claude Opus 4.5 Compare models

Model	Input price	Output price	Context window	Capabilities
Claude Opus 4.5This page	USD 4 / 1M tokens	USD 20 / 1M tokens	200,000	Text output · Reasoning · Tool calling
Claude Opus 5.5	USD 3.2 / 1M tokens	USD 16 / 1M tokens	1,000,000	Text output · Reasoning · Tool calling
Claude Opus 5	USD 4 / 1M tokens	USD 20 / 1M tokens	1,000,000	Text output · Reasoning · Tool calling
Claude Opus 4.8	USD 3.43432 / 1M tokens	USD 17.17168 / 1M tokens	1,000,000	Text output · Reasoning · Tool calling
Claude Opus 4.7	USD 4 / 1M tokens	USD 20 / 1M tokens	1,000,000	Text output · Reasoning · Tool calling

Model specifications

Input: text, image, pdf
Output: text
Context window: 200,000
Maximum output: 64,000
Release date: 2025-11-01
Attachments: Yes
Reasoning: Yes
Tool calling: Yes
Temperature setting: Yes
Open weights: No

Frequently asked questions

What is Claude Opus 4.5 for?

Flagship Claude model for deep reasoning, coding, and long-horizon agents

What inputs and outputs does Claude Opus 4.5 support?

Recorded inputs: text, images, PDF; outputs: text.

How is Claude Opus 4.5 priced?

The pricing table shows the current recorded Moduck price. For example: Input USD 4 / 1M tokens; Output USD 20 / 1M tokens. See the pricing table for all units, variants, and conditions.

What specifications are recorded for Claude Opus 4.5?

Current model records list Context window 200,000 tokens; Maximum output 64,000 tokens.

What model parameter does the Quickstart use?

The example uses anthropic/claude-opus-4-5-20251101. This value comes from the page identifier and is not confirmed as a callable Moduck public ID.

Can I call this model through the Moduck API now?

This page has no verified Moduck API call for this model. A Quickstart example or reserved ID does not establish access; check the models available to your account.