AI Context Window Comparison (2026): GPT, Claude, Gemini Token Limits by Model

AI Context Window Comparison (2026): GPT, Claude, Gemini Token Limits by Model#

When developers search for context window limits, they usually want one thing: a clear comparison table. This guide shows the practical token limits for major models in 2026.

Context Window Comparison Table#

What Does Context Window Actually Mean?#

The context window is the maximum amount of text (measured in tokens) a model can process at once. Larger context windows matter when you are working with:

• Full codebases
• Long contracts or reports
• Multi-document RAG workflows
• Large chat histories
• PDF analysis

Which Model Should You Choose?#

Access Through Crazyrouter#

All major long-context models are available through Crazyrouter.

from openai import OpenAI

client = OpenAI(
    api_key="sk-your-crazyrouter-key",
    base_url="https://crazyrouter.com/v1"
)

response = client.chat.completions.create(
    model="claude-sonnet-4-5-20250929",
    messages=[
        {"role": "user", "content": "Summarize this 100-page document..."}
    ]
)

FAQ#

Does larger context always mean better performance?#

No. A larger context window lets you send more text, but model quality still matters. Gemini has the largest context, but Claude often performs better on reasoning quality.

How many words is 200K tokens?#

Roughly 150,000 words in English, depending on formatting and language.

Which model is best for codebase analysis?#

Claude Opus and Sonnet are usually the best balance of context size and code quality.

Related#

• Pricing
• Quickstart
• Models List