LLM Token Counter
LiveCount tokens for Claude, GPT-4, and Gemini side-by-side with live cost estimates.
claudegptgeminicostclient-side
10 free tools · no sign-up
The AI dev tools you keep Googling for.
Token counters, prompt analyzers, schema converters, cost calculators — single-purpose, free, and entirely in-browser. Built for prompt engineers, LLM builders, and indie AI developers.
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- Claude 3.5 Sonnet——
per call - GPT-4o——
per call - Claude 3 Haiku——
per call - Gemini 1.5 Flash——
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AI Cost Calculator
LiveProject monthly LLM API costs across Claude, GPT, and Gemini.
costpricingclient-side
Shipping next
JSON Schema → Claude Tool
Q3 2026Convert any JSON Schema into a ready-to-use Anthropic tool-use definition.
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Cron Expression Explainer
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Prompt Diff Tool
Q4 2026Compare two prompt versions structurally. See exactly what changed.
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Markdown → Anthropic Messages API
Q4 2026Paste a conversation in markdown. Get the exact API request JSON Claude expects.
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Claude System Prompt Analyzer
Q1 2027Paste your system prompt. Get clarity + length + structure feedback.
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Regex Builder from Natural Language
Q1 2027Describe what you want to match. Get a regex with examples and edge-case tests.
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JSON Validator + AI Fixer
Q1 2027Paste broken JSON. Get validation errors + an AI-suggested fix.
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Prompt Template Extractor
Q1 2027Paste a long prompt with variables. Get a clean reusable template.
promptstemplatesai-powered