Free AI tools

Count tokens for Claude, GPT-4, Gemini, Llama, and 15+ other models before sending prompts. Avoid context limit errors.

Calculate monthly API costs across providers. Compare Claude vs GPT-4 vs Gemini side-by-side and find the cheapest option.

Break down your context window by type — system prompt, history, documents, query, and output reserve. Visual stacked bar.

Estimate GPU memory requirements for running any local LLM. Supports all quantization levels. Shows which GPUs are compatible.

Convert prompts between ChatML, Llama 3, Mistral, Gemma, Phi-3, and API JSON formats. Copy-ready output.