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🧠 AI Model Utilities

Estimate token costs, compare models and prepare data for LLM apps. 15 free tools, no sign-up.

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AI Agent Workflow BuilderDesign an agent workflow and export it as JSON and a Mermaid diagram. Free, no sign-up. Runs in…AI API Cost CalculatorEstimate monthly AI API cost from requests, tokens, caching and batch usage. Free, no sign-up. Runs in your…LLM Context Window CalculatorCheck whether your text fits in a model’s context window and how much room is left. Free, no…Embedding Cost CalculatorEstimate the one-off cost to embed a document collection. Free, no sign-up. Runs in your browser.LLM Configuration GeneratorGet sensible starting parameters for temperature, top-p and token limits by task. Free, no sign-up. Runs in your…AI Model Benchmark ExplorerLearn what major AI benchmarks measure, and where their scores mislead. Free, no sign-up. Runs in your browser.AI Model ComparisonCompare leading AI models by API price, context window and best use. Free, no sign-up. Runs in your…AI Model JSON FormatterClean and repair JSON returned by LLMs: remove code fences, trailing commas and comments. Free, no sign-up. Runs…AI Model SelectorAnswer three questions to get a shortlist of models to test for your task. Free, no sign-up. Runs…AI Output ComparisonCompare two AI outputs with a word-level diff and basic stats. Free, no sign-up. Runs in your browser.RAG Chunking CalculatorPlan chunk size and overlap for retrieval and preview the resulting chunks. Free, no sign-up. Runs in your…AI Response EvaluatorScore an AI answer with a weighted rubric and quick automatic checks. Free, no sign-up. Runs in your…Token Cost CalculatorCalculate the price of a given number of input and output tokens. Free, no sign-up. Runs in your…Token CounterEstimate token counts for text. Fast, private and model-agnostic. Free, no sign-up. Runs in your browser.Vector Similarity CalculatorCompute cosine similarity, dot product and distances between two vectors. Free, no sign-up. Runs in your browser.