Prompt, token, structured data, and provider workflow utilities
AI Tools
Use browser-based AI tools for prompt formatting, token counting, cost estimation, TOON conversion, and prompt template conversion across ChatGPT, Claude, Gemini, Ollama, and related workflows.
ChatGPT / OpenAIClaude / AnthropicGemini / GoogleOllama
12+
AI tools
4
providers covered
Browser-based
local processing
Tokens & cost
Measure prompts and estimate spend before you send requests into a real workflow.
Prompt tools
Clean up prompts and translate template structures before they reach a provider-specific API.
Structured data
Compare compact TOON output against JSON, YAML, CSV, or XML when you want leaner AI payloads and quick token estimates.
JSON to TOON
Convert structured JSON into TOON and compare approximate token impact for AI payloads.
YAML to TOON
Turn YAML into TOON and review compactness before reusing structured data in an AI workflow.
CSV to TOON
Convert spreadsheet-like CSV rows into TOON and compare compactness for AI payloads.
XML to TOON
Turn data-shaped XML into TOON and inspect whether repeated records become more compact for AI use.
Provider migration
Move prompt payloads between hosted and local providers without rewriting each message shape by hand.
OpenAI to Anthropic Prompt Converter
Convert OpenAI message templates into Anthropic Messages format for Claude workflows, ChatGPT-to-Claude migrations, and cross-provider prompt reuse. The main structural change is extracting the system message from the messages array into Anthropic's top-level system field — this tool handles that mapping instantly.
OpenAI to Gemini Prompt Converter
Convert OpenAI message templates into Gemini contents format for Google AI Studio, Vertex AI, ChatGPT-to-Gemini migrations, and multi-provider workflows. OpenAI uses a flat messages array with role and content fields; Gemini uses a contents array with parts and maps the assistant role to 'model' — this tool handles that structural conversion instantly.
Anthropic to OpenAI Prompt Converter
Convert Anthropic message templates into OpenAI Messages format for Chat Completions, Responses API workflows, and Claude-to-GPT migrations. Anthropic takes system as a top-level field; OpenAI puts it inside the messages array with role 'system' — this tool moves it back into the correct position automatically.
OpenAI to Ollama Prompt Converter
Convert OpenAI message templates into Ollama chat format for local model testing, hosted-to-local prompt migration, and self-hosted AI workflows. Ollama's /api/chat endpoint uses a similar messages structure to OpenAI but requires a model field — this tool outputs the converted payload so you can add the model name and send it to a locally running Ollama instance.