AI Engineering & LLM Tools
Specialized utilities for AI developers, prompt engineers, and LLM practitioners. Count tokens, compare context limits across OpenAI, Anthropic, and Google models, structure XML system prompts, and model vector DB costs.
AI Token Counter & Cost Calculator
Estimate token count and API costs across OpenAI, Anthropic, Google, and DeepSeek language models.
Context Window Calculator
Visualize how much of each AI model's context window your prompt or document uses across leading LLMs.
AI API Budget Calculator
Project monthly and annual AI API costs across OpenAI, Anthropic, Google, and Groq based on your request volume.
AI Embedding Cost & Vector Memory Calculator
Calculate vector embedding generation costs, dimensions, and HNSW Vector DB RAM requirements for RAG architectures.
AI Prompt Formatter & XML Tag Builder
Format high-performance system prompts using Anthropic-recommended XML tags and structured Markdown delimiters for frontier LLMs.
Frequently Asked Questions
Common questions about our ai engineering & llm tools.
Which tokenizer algorithms are supported?
Why use XML prompt formatters?
In-Depth Guides & Tutorials
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Learn the standard practices for organizing and nesting JSON structures for optimal API transmission and parsing performance.
Understanding Base64 Encoding: A Complete Guide
A deep dive into how binary data is translated into 64 ASCII characters for safe web transport and storage.
The Math Behind Loan Amortization & EMIs
Unpacking the complex formulas that power Equated Monthly Installments and how interest compounds over time.