AI & Prompt Engineering 100% Local Processing Limit: 10 MB

LLM Context Window Visualizer

Visualize token window limits and capacity across GPT-4o, Claude 3.5, Gemini 1.5, and Llama 3.

Sponsor Space

1. Prompt & Model Configuration

2. Context Window Diagnostics

Window Capacity Used 0.0%
Estimated Tokens: 0
Remaining Capacity: 200,000
Character Count
0
Est. Input Cost ($)
$0.000
Sponsor Space

How to Use the LLM Context Window Visualizer

  1. 1
    Select your target AI model (GPT-4o, Claude 3.5 Sonnet, Gemini 1.5 Pro, or custom token limit).
  2. 2
    Paste your system prompt, document context, or dialogue history.
  3. 3
    Review real-time capacity percentage, remaining tokens, and estimated cost.

Practical Example & Use Case

Common Real-World Scenario

Testing whether a 45-page legal contract fits inside Claude 3.5 Sonnet's 200,000 token limit without truncation.

Technical Notes & Limitations

Browser Engine Architecture

Token counts are computed using heuristic tokenizers (approx 3.85 characters per token). Exact BPE token counts may vary slightly by tokenizer library.

Frequently Asked Questions

Is my text sent to any AI server?

No. All calculations are performed 100% locally in your web browser.

What happens if I exceed 100% capacity?

The visual progress bar turns red, indicating the LLM will truncate earlier context or throw an error.