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Feature Guide

Best AI with Long Context

AI assistants with large context windows for long documents.

By Council Research TeamUpdated: Jan 27, 2026

Why Long Context Window Matters

Long context lets you analyze entire books or codebases at once.

AI Models with Long Context Window

Gemini

Gemini

Best Choice

Google

2M tokens - largest available

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Claude

Claude

Anthropic

200K tokens - best quality/length balance

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ChatGPT

ChatGPT

OpenAI

128K tokens

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Compare AI Models with Long Context Window

Test how different AI models use long context window for your specific needs.

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