Context Window Visualizer
Visualize how much of an AI model's context window your text fills. Supports GPT-5.5, Claude, Gemini, and more. Paste text or enter a token count.
The Context Window Visualizer shows you exactly how much of a model's context limit your text occupies — in real time. Paste your prompt or document and select a model to see a visual progress bar, the raw token count, the percentage of the context window used, and how many tokens remain.
Context window management is one of the most common sources of unexpected behavior in AI applications. When a prompt exceeds the model's limit, the model may refuse the request entirely or silently drop earlier content — often without a clear error. Knowing how close you are to the limit before sending a request helps you avoid truncation and plan for context-aware chunking strategies in production systems.
The tool supports all major models including GPT-5.5 (1M tokens), Claude Opus 4.7 (1M tokens), Gemini 3.1 Pro (1M tokens), and smaller models where context limits matter more. You can also enter a token count directly without pasting text.
Context window: 1,000,000 tokens
Tokens Used
0
Context Window
1,000,000
Percentage Used
0.0%
Remaining
1,000,000
≈ 751,879.699 words
Frequently Asked Questions
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