EidoStack tools
Small tools for better AI decisions.
Explore free, focused tools that help you understand model economics and plan smarter AI workflows with confidence.
AI Pricing Calculator
Estimate the cost of your input and output token usage across supported OpenAI, Anthropic, and Google AI models.
AI Token Calculator
Count prompt tokens locally and prepare a model-aware cost estimate without uploading content.
Context Window Calculator
See whether a prompt or file fits the selected model and how much room remains for the response.
Common Questions
What are EidoStack developer tools?
EidoStack developer tools are free utilities designed to help developers understand AI model usage. You can estimate API costs, calculate token usage, and check whether your prompts and files fit within a model’s context window.
Are EidoStack AI tools free to use?
Yes. The tools on this page are free to use and are designed to provide quick calculations for common AI development tasks such as estimating model costs, counting tokens, and planning context usage.
Which AI providers are supported?
The AI Pricing Calculator supports models from OpenAI, Anthropic, and Google AI. Other tools use model-specific information where available to provide more relevant token and context estimates.
How can I estimate the cost of using an AI model?
Use the AI Pricing Calculator to enter your expected input tokens, output tokens, request volume, and usage frequency. It can help you estimate daily, monthly, and yearly API costs for supported AI models.
How can I calculate how many tokens are in my prompt or file?
The AI Token Calculator lets you enter text or select a supported file and estimate its token count for the selected AI model. This can help you understand prompt size and estimate model usage before sending requests to an AI API.
Does the AI Token Calculator upload my content?
No. Token counting is performed locally, so your text or file content does not need to be uploaded to EidoStack for token calculation.
How do I know if my prompt fits within an AI model’s context window?
Use the Context Window Calculator to compare your prompt or file against the selected model’s context window. It shows how much context is already used and how many tokens remain after reserving space for the model’s response.