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New models, price moves, and which picks we'd change. Short enough to read over coffee.

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Tools

Humanize AI Text
Model Selector
Token Counter
Prompt Optimizer
Cost Calculator
Agent Config Generator
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Converters

Text to CSV
CSV to Text
CSV to JSON
JSON Schema Generator
Markdown to HTML
PDF to Markdown

Models

LLM Leaderboard
Comparison Chart
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Free tools for working with AI.

Pick a model and see what it will cost, then clean up the data you feed it. Everything runs in your browser and none of it needs an account.

Search tools

Most used

4 tools

Text to CSVPaste text or a .txt file and get a clean CSV, even from aligned tables and Name: value lists. AI pulls out the columns you name.
Humanize AI TextRewrite AI text so it reads like a person wrote it, in the tone you pick. Shows which AI patterns it found.
CSV to TextTurn CSV into a readable table, a list, labeled records, Markdown or your own template.
AI Model SelectorTell it your tasks and priority, get a model for each job with the monthly cost.

Pick a model

4 tools

AI Model SelectorNewTell it your tasks and priority, get a model for each job with the monthly cost.
AI Model Comparison ChartNewEvery model plotted by intelligence against real cost per task, at everyday or max effort.
LLM LeaderboardEvery model we track, ranked by intelligence, cost, and speed.
AI Cost CalculatorNewPrice a monthly AI workload per task, thinking tokens included, and compare it with our picks.

Write and prompt

5 tools

Humanize AI TextRewrite AI text so it reads like a person wrote it, in the tone you pick. Shows which AI patterns it found.
AI Prompt GeneratorCheck a prompt against seven basics as you type, then let AI rewrite it and show every change.
Agent Prompt Library18 system prompts and agent configs with fill-in fields, token counts and a model pick for each.
Agent Config GeneratorNewBuild an OpenClaw config that routes each task to the right model, with a cost estimate.
Token CounterCount tokens for GPT-6, Claude, Gemini and estimate API costs before you send.

Convert data and files

8 tools

Text to CSVPaste text or a .txt file and get a clean CSV, even from aligned tables and Name: value lists. AI pulls out the columns you name.
CSV to TextTurn CSV into a readable table, a list, labeled records, Markdown or your own template.
JSON to CSVPaste any API response. It finds the list, flattens nested objects and exports a clean CSV.
CSV to JSONArray of objects, keyed object or JSON Lines, with typed values and nested dot-notation keys.
CSV CleanerSee every problem in a CSV first: duplicates, blank rows, stray spaces, bad emails. Fix them in one pass.
PDF to MarkdownNewTurn a PDF into clean Markdown with real headings and paragraphs, plus a token count for AI.
Markdown to HTMLMarkdown to HTML, email-safe HTML or rich text for Docs and Gmail. Cleans up AI chat output.
Image ConverterNewConvert up to 20 images to WebP, JPEG or PNG, resize them and see how much you saved.

Developer utilities

5 tools

JSON FormatterFormat, minify and validate JSON. Repair fixes broken JSON from logs and chat replies.
JSON Schema GeneratorNewGenerate a schema from sample JSON, plus TypeScript, Zod and strict schemas for OpenAI and Claude.
Regex TesterNewTest a regex live, with a plain-English explanation, capture groups and a replace preview.
Diff CheckerNewCompare two texts word by word. See exactly what an AI rewrite changed, with stats.
Unix Timestamp ConverterNewTimestamps to dates and back in one field. Paste a log to convert every timestamp at once.