AI Prompt Engineering Suite
Free Builders

Create high-quality Midjourney prompts with aspect ratio, style, camera angles, lighting, and version parameters instantly. Free online helper for AI artists.

Generate optimized system prompts and expert personas for ChatGPT, Claude, and Gemini. Choose roles, tone, and formatting constraints for better AI replies.

Score any AI prompt on role, context, constraints, and output format, then rewrite it with proven frameworks like RTF and TAG in one click. Free and 100% browser-based.

Estimate tokens and API costs for GPT-5, Claude, Gemini, and Llama before you hit send. Live estimates, model price table, and batch paste support that runs fully in your browser.

Build reusable AI prompt templates with {{variables}}, presets for writing, coding, and marketing, live preview, and copy-ready output. Private and free forever.

Compose effective negative prompts for Stable Diffusion, Midjourney, and Flux from categorized lists covering artifacts, anatomy, quality, and style terms.

Extend image prompts with curated style, lighting, camera, mood, and detail modifiers for Midjourney, Stable Diffusion, DALL·E, and Flux.

Strip markdown code fences, chat prefixes, and stray artifacts from AI output. Extract clean JSON, markdown, or plain text in one click, entirely offline.

Split long documents into overlapping chunks by tokens, words, or characters for RAG pipelines and embedding APIs. Paragraph-aware splitting with instant export.

Convert example input/output pairs into clean few-shot prompt blocks with numbered turns, XML tags, or markdown separators for better model performance.

Compare two AI prompts side by side with word-level diffs, token estimates, and structure scores to see exactly what changed between versions.

Structure prompts with XML tags for Claude models: wrap context, instructions, examples, and thinking sections in tags, then copy the organized result.