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Claude Enterprise extended context window

Q: Claude Enterprise extended context window

Use the claude-enterprise model with the context_window parameter set to the desired token length to enable Claude Enterprise's extended context window. This allows processing of larger inputs and maintaining longer conversations seamlessly within the Anthropic Enterprise API.

Quick answer

Use the claude-enterprise model with the context_window parameter set to the desired token length to enable Claude Enterprise's extended context window. This allows processing of larger inputs and maintaining longer conversations seamlessly within the Anthropic Enterprise API.

PREREQUISITES

Python 3.8+
Anthropic Enterprise API key
pip install anthropic>=0.20

Setup

Install the anthropic Python SDK and set your Anthropic Enterprise API key as an environment variable.

Install SDK: pip install anthropic
Set environment variable: export ANTHROPIC_API_KEY='your_enterprise_api_key'

bash

pip install anthropic

output

Collecting anthropic
  Downloading anthropic-0.20.0-py3-none-any.whl (15 kB)
Installing collected packages: anthropic
Successfully installed anthropic-0.20.0

Step by step

Use the Anthropic client with the claude-enterprise model and specify the context_window parameter to extend the context length. This example shows how to send a prompt with a 100k token context window.

python

import os
import anthropic

client = anthropic.Anthropic(api_key=os.environ["ANTHROPIC_API_KEY"])

response = client.messages.create(
    model="claude-enterprise",
    max_tokens=1024,
    context_window=100000,
    system="You are a helpful assistant.",
    messages=[{"role": "user", "content": "Explain the benefits of an extended context window."}]
)

print(response.content[0].text)

output

The extended context window in Claude Enterprise allows processing of much larger inputs, enabling long documents, codebases, or conversations to be handled in a single session without losing context. This improves coherence and reduces the need for manual context management.

Common variations

You can adjust the context_window parameter to other supported sizes depending on your subscription and use case. The claude-enterprise model supports up to 100k tokens as of 2026-04.

For asynchronous usage, use async methods in the anthropic SDK. Streaming is not currently supported for extended context windows.

python

import asyncio
import os
import anthropic

async def main():
    client = anthropic.Anthropic(api_key=os.environ["ANTHROPIC_API_KEY"])
    response = await client.messages.acreate(
        model="claude-enterprise",
        max_tokens=1024,
        context_window=100000,
        system="You are a helpful assistant.",
        messages=[{"role": "user", "content": "Summarize a long document."}]
    )
    print(response.content[0].text)

asyncio.run(main())

output

The extended context window enables Claude Enterprise to summarize very long documents efficiently by maintaining full context, which improves accuracy and relevance in the summary.

Troubleshooting

If you receive an error about unsupported context window size: Verify your subscription supports extended context windows and use a valid context_window value (e.g., 100000 tokens).
If responses are truncated: Ensure max_tokens is set appropriately and does not exceed the context_window limit.
If latency is high: Large context windows increase processing time; optimize prompt length and token usage accordingly.

✅

Key Takeaways

Use the context_window parameter with claude-enterprise to enable extended context up to 100k tokens.
Set max_tokens carefully to avoid truncation within the extended context.
Extended context windows improve handling of long documents and conversations without losing coherence.
Check your Anthropic Enterprise subscription supports extended context windows before usage.
Use asynchronous calls for scalable integration but streaming is not supported for extended context.

Verified 2026-04 · claude-enterprise

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