HandyAI

What is HandyAI?

HandyAI is a small collection of single-purpose web tools for prompt engineers, LLM builders and indie AI developers. The two live tools are an LLM Token Counter, which counts tokens for Claude, GPT and Gemini models side by side and shows each model's context size and an estimated cost per call, and an AI Cost Calculator that projects monthly API spend across those providers. A roadmap on the site lists more tools due between Q3 2026 and Q1 2027, including a JSON Schema to Claude tool converter, a cron expression explainer, a prompt diff tool, a Markdown to Anthropic Messages API converter, a Claude system prompt analyzer, a regex builder and a JSON validator with an AI fixer. Visitors can sign up for email notices when each one ships. Everything is free, needs no sign-up and runs client-side in the browser, so nothing leaves your machine unless you invoke an AI-powered tool. There are no paid plans listed.

Use cases

• Count tokens across Claude, GPT and Gemini
• Estimate cost per LLM API call
• Project monthly LLM API spend
• Compare model context window sizes
• Prepare prompts before sending them to an API
• Follow upcoming prompt tooling releases

Who it's for

• Prompt engineers
• LLM application developers
• Indie AI developers

Why use HandyAI

• Comparing token counts and costs for several models in one screen saves switching between vendor pages.
• Free access with no account makes it quick to use during prompt design.
• Client-side tools keep your prompt text in the browser instead of uploading it.
• The cost calculator helps budget API spend before you commit to a provider.
• A published roadmap shows which utilities are planned, with dates, so you know what to expect.

HandyAI features

• LLM Token Counter with side-by-side models
• Live per-call cost estimates
• Context window size shown per model
• AI Cost Calculator for monthly API spend
• Client-side processing in the browser
• No sign-up required
• Email notify-me list for upcoming tools
• Roadmap of prompt, schema and regex utilities

HandyAI integrations

• Anthropic
• OpenAI
• Google

How to get started with HandyAI

1. Open handyai.tools and choose the LLM Token Counter or the AI Cost Calculator.
2. Paste your prompt or enter your expected usage into the tool.
3. Read the token counts, context sizes and per-call costs shown for each model.
4. Use the calculator to project monthly spend across providers.
5. Join the notify-me list for any roadmap tool you want to hear about.

HandyAI limitations

• Only two tools are live; the rest are listed with future quarters
• Cost figures are estimates for the models shown, such as Claude 3.5 Sonnet and GPT-4o
• AI-powered tools on the roadmap send data off your browser when invoked

HandyAI pricing

HandyAI is free to use.

Prices can change and may vary by country or exclude tax. Check the official pricing page.

HandyAI alternatives

The main HandyAI alternatives listed on Debuly are Helicone, PromptLayer, Langfuse, LLMLingua, Mydentify AI Model Cost Calculator and ClaudeScope. The table compares pricing and platforms; order is A–Z.

1. 

   ClaudeScope

   Free, open-source local dashboard that searches every Claude Code session and shows token, cost and cache-savings usage.

   Developer platformsCodingProductivity
   Open sourceVisit ClaudeScope (official site)
2. 

   Helicone

   Open-source LLM observability and AI gateway that logs requests, tracks cost and latency, and routes to 100+ models through one API.

   Developer platformsCoding
   FreemiumVisit Helicone (official site)
3. 

   Langfuse

   Open-source LLM observability and evaluation platform for tracing agents, managing prompts and scoring outputs.

   Developer platformsAutomation and agentsCoding
   FreemiumVisit Langfuse (official site)
4. LL

   LLMLingua

   Microsoft research toolkit for compressing long LLM prompts, cutting token counts, API cost and latency with little loss of meaning.

   Developer platformsResearch and searchAutomation and agents
   Open sourceVisit LLMLingua (official site)
5. 

   Mydentify AI Model Cost Calculator

   Free web calculator that compares monthly API costs of AI models from your request volume, token sizes and prompt caching.

   Developer platformsResearch and search
   FreeVisit Mydentify AI Model Cost Calculator (official site)
6. 

   PromptLayer

   Prompt management, evals and LLM observability so engineers and domain experts can ship prompt changes together.

   Developer platformsAutomation and agentsProductivity
   FreemiumVisit PromptLayer (official site)

HandyAI FAQ

Sources & verification

Facts on this page come from the official sources below, each with the date we read it. Written by Debuly; the vendor did not review this page.

Image credits

• Logo: from handyai.tools · fetched 23 Oct 2026 · Vendor trademark, used only to identify the product; removed on request
• Cover: none collected yet, so a generated tile is shown.

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