Free tools
12 free tools for AI & growth teams
Practical, functional utilities for the work around AI workflows, SEO and automation. No signup, no email gate, everything runs in your browser. Built by the team behind OpenHelm.
AI & LLM
LLM API Cost Calculator
Estimate and compare API costs across Claude, GPT and Gemini.
Open toolLLM Token Counter
Paste text, get a real token count and a cost estimate.
Open toolAI Model Comparison
Compare context windows, pricing and strengths side by side.
Open toolContext Window Calculator
Check whether your text fits each model’s context window.
Open toolPrompt Formatter
Clean up and structure a messy prompt into clear sections.
Open toolMCP & Developers
SEO & Content
llms.txt Generator
Generate a valid llms.txt to guide AI crawlers to your best content.
Open toolJSON-LD Schema Generator
Generate schema.org JSON-LD for articles, orgs, FAQs and products.
Open toolSERP Snippet Preview
Preview how your title and meta description look in Google.
Open toolReadability Checker
Score your text for reading ease, grade level and reading time.
Open toolAutomation
Free, no-signup tools for AI and growth teams
Every tool on this page is genuinely free and runs entirely in your browser, there’s no account, no email gate and nothing you type is ever uploaded. They’re built for the practical work around modern AI: estimating and comparing LLM API costs, counting tokens with a real tokenizer, generating Model Context Protocol configs, building structured data, and checking content readability.
The AI and LLM tools help you plan and budget AI features, work out what a workload will cost across Claude, GPT and Gemini, check whether a prompt fits a model’s context window, and compare models on price and capability. The SEO and content tools cover llms.txt, JSON-LD schema markup, Google snippet previews and readability scoring. The automation tools quantify the ROI of automating manual work and build cron schedules for recurring jobs.
We build them because the same questions come up constantly when teams adopt AI. When you’re ready to hand off the actual task, not just the calculation, OpenHelm runs AI agents in a secure cloud environment and returns the finished result for your sign-off.
These tools help you plan. OpenHelm does the work.
When you’re ready to hand off the actual task, research, outreach, reporting, monitoring, OpenHelm runs AI agents in a secure cloud environment and returns the finished result for your sign-off.
Questions about these tools
Are these tools really free?
Yes. Every tool here is completely free, with no signup and no email required. They run entirely in your browser, so nothing you type is uploaded, paste sensitive prompts, keys or copy without worry.
Who are these AI and SEO tools for?
They’re built for AI engineers, growth and SEO teams, founders and operators, anyone who works around AI workflows, content and automation. Examples include estimating LLM API costs, counting tokens, generating MCP configs and structured data, and checking readability.
Do the tools store or send my data anywhere?
No. Each tool is frontend-only, all calculation and generation happens locally in your browser. There is no backend, no account and no tracking of what you enter.
How accurate are the cost and token figures?
Token counts for GPT models use OpenAI’s real tokenizer, so they’re exact. Pricing and model specs are real published figures stamped with a last-verified date and links to each provider, since they change often. Treat them as accurate planning estimates and confirm against the provider before committing to a budget.