Build better prompts. Make AI output reliable.
Quick structured prompt
Generated prompt
The right tool for the task.
From quick conversions to token analysis. Pick a category and get straight to work.
AI & LLM
Understand tokens, estimate model costs, and build better prompts.
Explore categoryGenerators
Create identifiers, passwords, and useful sample content.
Explore categoryFormatters
Turn tangled structured data into readable code.
Explore categoryCrypto & Security
Create secure hashes and inspect data, right in your browser.
Explore categoryOpen. Use. Get back to work.
Structured Prompt Builder
Build deterministic prompts from typed fields, CO-STAR or RTF structures, ordered examples, and explicit local templates.
AI JSON Repair + Schema Validator
Repair malformed model JSON, inspect every change, and validate detailed JSON Schema constraints locally.
AI Text Cleaner + Invisible Character Inspector
Inspect invisible Unicode at original UTF-16 offsets, selectively clean copied text, and audit every local change.
Prompt Batch Variable Expander
Expand {{variable}} prompts from JSON or CSV records with warnings, paginated previews, and lossless exports.
Prompt Diff & Version Compare
Compare prompt revisions by line, word, or grapheme with real token deltas and optional local versions.
LLM API Request Builder
Build native OpenAI, Anthropic, and Gemini request JSON, cURL, JavaScript, and Python examples without API keys or model calls.
Context before commitment.
Sourced model prices and provider notes. No invented scores, and no guesses presented as facts.
Model prices & context
Search text models and compare input, output, and context data.
Explore model index36 API providers
Compatibility describes documented integration, not feature equivalence. Verify current pricing and availability with the provider.
Less friction.
Local by default
Tool inputs never leave for KitVerse servers.
No gatekeeping
No email, credits, or locked features.
Clear by design
Honest estimates with visible sources.
Questions, answered plainly.
The details worth knowing before you paste.
More about our approachAre KitVerse tools really free?
Yes. Every published tool is free to use and requires no account. There is no usage credit system or locked premium tier.
What happens to the text I paste?
Tool inputs are processed locally in your browser and are never sent to KitVerse servers. Inputs are not added to analytics events or saved by default.
Are token counts accurate for every AI model?
No single tokenizer fits every model. KitVerse marks verified tiktoken mappings as exact and labels all other model mappings as estimates.
Where do model prices come from?
The bundled pricing snapshot is normalized from LiteLLM’s public model price data. Each estimate shows its retrieval date and source; provider billing pages remain authoritative.