AI Tools
Free, private AI utilities — prompt builders and testers, token & cost calculators, model comparisons, output cleaners, RAG and developer helpers, and image-generation prompt builders. Everything runs in your browser; bring your own API key for live model calls.
A complete, privacy-first toolkit for working with AI: build and test prompts, count tokens and estimate API costs across GPT, Claude, Gemini and open models, clean and repair model output, design RAG pipelines, and craft image, video and audio generation prompts. Each tool is single-purpose, instant, and free.
Everything runs client-side in your browser. Tools that call a live model do so directly from your browser with your own API key — your prompts, keys and data are never sent to or stored on our servers. No account, no limits, no lock-in.
All
LLM API Cost Calculator
Estimate the cost of any GPT, Claude or Gemini API call — per request and per month.
ADetailer Face & Hand Fix Guide
Configure ADetailer for automatic face and hand inpainting in SD
Adobe Firefly Prompt Builder
Build commercially safe Firefly prompts with style and reference guidance
AI Art NFT Metadata Builder
Build ERC-721 metadata JSON for AI-generated artwork NFTs
AI Image Workflow Total Cost Tracker
Track total cost of a multi-step AI image workflow across generation and editing
AI Avatar Video Script Formatter
Format scripts for AI avatar tools with pauses and pronunciation guides.
AI Voice Provider Comparison Table
Compare ElevenLabs, PlayHT, OpenAI TTS, Murf, and others at a glance
AI Watermark & Artifact Removal Guide
Remove watermarks and compression artifacts from AI images with SD inpainting
Album Art Prompt Builder
Create music album cover prompts matched to genre and era
AnimateDiff Prompt Guide
Build AnimateDiff prompts with motion LoRA and prompt travel techniques.
Architecture Prompt Builder
Generate architectural visualization prompts for any building style
Art Style Prompt Library
Browse art styles and movements with copy-ready prompt terms
AI Audio Duration Estimator
Estimate generated audio duration and credit cost from word count
Audiobook TTS Chapter Formatter
Format book chapters for AI TTS narration with consistent pacing and pauses
Automatic1111 WebUI Settings Guide
Understand every Automatic1111 setting tab with recommended values
AI Avatar & Lip-Sync Spec Builder
Plan AI avatar videos with script timing, expression, and camera specs
Batch Image Generation Planner
Plan batch generation jobs to balance quality, speed, and cost
Book Cover Prompt Builder
Build AI image prompts for book covers by genre and market category
BPM & Key Compatibility Checker
Check harmonic compatibility of keys and tempos for AI music generation
Camera & Lens Style Picker
Add authentic camera and lens terms to image-gen prompts for realism
Character Design Prompt Builder
Build game-ready character description prompts for AI image generators
Clipdrop / Stability AI API Guide
Use Clipdrop APIs for background removal, relighting, and upscaling
Color Palette Prompt Builder
Pick a color palette and get prompt-ready color descriptions for image AI
ComfyUI Node Reference Card
Quick reference for core ComfyUI nodes with inputs and outputs
ComfyUI Workflow Planner
Plan ComfyUI node workflows with VRAM and speed estimates
AI-Generated Image Commercial License Checker
Verify commercial usage rights for images from DALL·E, MJ, SD, and Firefly
Composition Rule Prompt Builder
Add rule-of-thirds, golden ratio, and framing terms to your image prompts
Concept Art Prompt Builder
Build professional concept art prompts with vehicle, environment, or creature specs
Consistent Character Prompt Sheet
Generate a character reference prompt sheet for consistent AI illustrations
ControlNet Mode Reference
Quick reference for all ControlNet preprocessors and their ideal use cases
ControlNet Strength Advisor
Calculate optimal control strength and guidance end for ControlNet tasks
Cultural Visual Style Prompt Library
Add culturally specific visual styles from many traditions to AI prompts
DALL·E API Playground
Test DALL·E 3 image generation directly from the browser with your API key
DALL·E Batch Cost Estimator
Estimate total DALL·E 2 and DALL·E 3 API costs for image projects
DALL·E 2 Size Picker
Pick the right DALL·E 2 size (256/512/1024px) with cost comparison
DALL·E 3 Prompt Builder
Write DALL·E 3 prompts that bypass rewrites and hit your creative vision
DALL·E 3 Revision Mode Guide
Use DALL·E 3's natural-language editing with precise instruction patterns
DALL·E 3 Size & Quality Picker
Choose DALL·E 3 size + quality combo and see cost per image
ElevenLabs API Playground
Test ElevenLabs TTS voices from the browser with your own API key
ElevenLabs Cost Calculator
Calculate ElevenLabs character credits needed for your audio project
ElevenLabs Voice Settings Advisor
Find ideal stability, similarity, and style settings for ElevenLabs voices
Textual Inversion Embedding Guide
Use embeddings in SD prompts with correct syntax and placement
Era & Decade Aesthetic Prompt Builder
Capture any decade's visual aesthetic in AI image prompts
AI Face Restoration Settings Guide
Configure GFPGAN, CodeFormer, and RestoreFormer for face enhancement
fal.ai Model Prompt Builder
Build prompts and parameters for fal.ai hosted Flux and SD models
Film Look Prompt Builder
Add authentic film stock and cinematic grade aesthetics to image prompts
Flux Prompt Builder
Build descriptive natural-language prompts for Flux.1 Dev and Schnell
Flux vs SD Model Comparator
Choose between Flux.1, SDXL, and SD 1.5 for your image generation goal
Frame Interpolation FPS Calculator
Calculate output frame count when interpolating AI video from 8fps to 24/60fps
HeyGen Video Cost Calculator
Calculate HeyGen credit usage for avatar videos by duration and resolution.
SD Hires.fix Resolution Calculator
Calculate base and upscaled resolutions for the SD hires.fix workflow
Icon & Illustration Prompt Builder
Build icon and UI illustration prompts with consistent style tokens
Ideogram Text-in-Image Prompt Builder
Build Ideogram prompts that reliably render text inside images
AI Image Output Format Optimizer
Choose PNG, WebP or JPEG for AI image outputs with quality vs size trade-offs
Image Generation Cost Calculator
Compare cost per image across DALL·E, Midjourney, Stable Diffusion, Flux
Image Generation Provider Picker
Answer 5 questions and get the best image AI for your specific use case
Image Resolution Comparison Tool
Compare pixel dimensions and megapixels across AI image model outputs
Booru-Style Image Tagging Prompt Builder
Build danbooru/e621-style tag prompts for anime and illustration models
Image-to-Video Motion Prompt Guide
Animate static AI images with video models using motion direction prompts
Google Imagen 3 Prompt Builder
Build Imagen 3 prompts with photorealistic and artistic style guidance
img2img Denoising Strength Advisor
Pick the right denoising strength for img2img transformations
AI Image Inference Speed Benchmarks
Compare generation speed across GPUs and cloud providers for SD models
Inpainting Mask & Prompt Guide
Write effective inpainting prompts that blend naturally with the original image
IP-Adapter Style Reference Guide
Use IP-Adapter for image-prompt style transfer in SD with optimal settings
Kling Video Prompt Builder
Build Kling AI video prompts with motion score and camera control
Lambda Labs GPU Cost Calculator
Calculate Lambda Labs on-demand and reserved GPU costs for AI generation
Landscape & Environment Prompt Builder
Build cinematic landscape prompts with time of day, weather, and biome
Lighting Style Prompt Library
Browse lighting setups and copy prompt terms for image AI
Logo Concept Prompt Builder
Generate AI logo concept prompts with brand personality and style
Luma Dream Machine Prompt Builder
Build Luma AI video prompts with physics-aware motion descriptions
Song Lyrics Structure Formatter
Format lyrics for Suno with [verse], [chorus], and [bridge] tags
Megapixel & Credit Estimator
Convert image resolution to megapixels and estimate compute credits
Midjourney Aspect Ratio Calculator
Convert pixel dimensions to Midjourney --ar flags instantly.
Midjourney /blend Mode Guide
Plan image blends with optimal image count, weight, and dimension advice.
Midjourney Chaos Parameter Guide
Understand --chaos 0–100 with use-case suggestions and copy-ready flags.
Midjourney Character Reference (--cref) Guide
Use --cref and --sref for consistent characters and styles in Midjourney
Midjourney /describe Reverse Engineer Guide
Use /describe output to extract reusable style tokens from reference images.
Midjourney --no Parameter Builder
Build --no exclusion lists to remove unwanted elements from MJ images.
Midjourney Pan & Zoom Mode Guide
Use Midjourney's pan and zoom-out features for cinematic expansions
Midjourney Permutation Prompt Builder
Build {option1, option2} permutation prompts to explore variations efficiently.
Midjourney Prompt Builder
Craft detailed Midjourney prompts with style, lighting, and camera controls.
Midjourney Prompt Optimizer
Trim redundant tokens and reorder Midjourney prompts for max impact
Midjourney --quality (--q) Parameter Guide
Choose the right --quality value for your Midjourney image and save credits
Midjourney --style raw Guide
Use Midjourney --style raw for minimal MJ aesthetic with maximum prompt control
Midjourney Seed Manager
Save, label, and reuse Midjourney seed numbers for consistent results.
Midjourney Stylize Explorer
Preview how --stylize values (0–1000) affect your prompt output.
Midjourney Tile Mode Guide
Generate seamless pattern prompts optimized for the --tile flag.
Midjourney Version Comparator
Side-by-side capability matrix for Midjourney v4 through v7.
Image AI Model Capability Comparator
Compare 15+ image AI models across quality, speed, cost, and licensing
SD Model Merge Recipe Builder
Design model merge recipes with weighted coefficients and merge methods
AI Music Genre Tag Library
Browse music genre and subgenre tags with Suno/Udio prompt formatting
AI Music Instrumentation Tag Guide
Add precise instrumentation tags to Suno and Udio music generation prompts
Music Mood to Prompt Descriptor Translator
Translate emotional descriptions into AI music prompt vocabulary
AI Music Production Style Guide
Add production-quality descriptors (mastered, lo-fi, warm vinyl) to music prompts
NovelAI Diffusion Prompt Guide
Master NAI Diffusion V3 prompting with tag weight and quality booster syntax
Negative Prompt Optimizer
Remove redundant negative prompt tokens and improve SD generation quality
OpenAI TTS Cost Calculator
Calculate OpenAI TTS API cost by word count and voice model
OpenAI TTS API Playground
Test OpenAI text-to-speech voices in the browser with your API key
OpenAI TTS Voice Picker
Compare OpenAI TTS voices (alloy, echo, fable, nova, onyx, shimmer) by use case
Outpainting Extension Prompt Guide
Extend AI images seamlessly with optimized outpainting prompt strategies
PhotoMaker & InstantID Guide
Configure PhotoMaker and InstantID for identity-consistent AI portraits
Pika Video Prompt Builder
Build Pika 1.5 prompts with motion, aspect ratio, and consistency tips
Podcast Script TTS Optimizer
Format scripts for AI voice with natural pauses and pronunciation hints
Pony Diffusion XL Prompt Guide
Master Pony Diffusion XL scoring and tag prompting for best output
Portrait Photography Prompt Builder
Build detailed portrait prompts with age, ethnicity, expression, and style
AI Image Print Resolution Calculator
Check if an AI-generated image has enough resolution for print at your size
Product Photography Prompt Builder
Create studio product shot prompts for e-commerce and marketing AI images
Prompt Chaining Workflow Planner
Plan multi-step AI image workflows generate, upscale, inpaint, export
Prompt Token Length Analyzer
Check if your SD prompt exceeds the 75-token CLIP limit
Prompt Safety & Content Policy Checker
Check image prompts against DALL·E, Midjourney and Stability AI policies
Style Transfer Prompt Guide
Transfer any visual style to your AI image prompt using reference techniques
AI Image Prompt Template Library
Proven prompt templates for portraits, landscapes, products, and more
Prompt Variation Generator
Generate 10 creative variations of your base image AI prompt
SD Prompt Attention Weight Calculator
Calculate compounding attention weights for nested SD parentheses
Regional Prompter Composition Guide
Assign different prompts to spatial regions of your SD image
Replicate Model Cost Estimator
Estimate Replicate run costs for popular image and video models
RunPod GPU Cost Calculator
Estimate RunPod Secure Cloud and Community Cloud costs for AI image/video
Runway Gen-3 Prompt Builder
Craft Runway Gen-3 Alpha video prompts with motion and cinematography terms
Runway Motion Brush Guide
Plan Runway Gen-3 motion brush strokes for controlled video animation
SD CFG Scale Advisor
Find the ideal guidance scale for your SD model and prompt style
LoRA Style Mixer
Mix multiple LoRA weights and preview the <lora:name:strength> syntax
SD Negative Prompt Library
Browse and copy proven negative prompt presets for Stable Diffusion
Stable Diffusion Prompt Builder
Compose SD prompts with weighted tokens, artists, and quality boosters
SD Prompt Debugger
Diagnose why your SD prompt produces unexpected results
SD Sampler Selector Guide
Pick the right Euler/DPM/DDIM sampler for your image type and speed
SD Step Count Optimizer
Find the minimum steps for good quality per sampler and model
SD Token Weight Syntax Builder
Build (token:weight) and [token] syntax for SD prompts without typos
Stable Diffusion 3 Prompt Guide
Write SD3 prompts in natural language with MMDiT-optimized structure
SDXL Native Resolution Picker
Choose SDXL-optimized resolutions to avoid quality degradation
SDXL Turbo & Lightning Guide
Configure SDXL Turbo and Lightning models for 1–4 step generation
AI Image Social Media Size Guide
Generate AI images at the exact pixel dimensions for each social platform
Sora Video Prompt Builder
Build cinematic Sora video prompts with motion, camera, and scene descriptions
Spatial Audio Prompt Builder
Build prompts for AI audio with positional and environmental sound descriptors
Stability AI API Credit Calculator
Calculate Stability AI API credits needed for your image generation workflow
Stability AI API Playground
Test Stability AI image generation endpoints from the browser with your key
Stable Cascade Configuration Guide
Optimize Stable Cascade stage A/B settings for quality and speed
SDXL Base + Refiner Workflow Guide
Configure SDXL base and refiner split for optimal quality
Stable Video Diffusion Guide
Configure SVD settings for optimal motion and consistency.
Style Consistency Token Manager
Save and reuse style tokens to keep visual consistency across image sets
Suno Music Prompt Builder
Write Suno AI music prompts with genre, mood, tempo, and instrumentation
Synthesia vs HeyGen vs D-ID Comparator
Choose the best AI avatar platform for your use case and budget.
Texture & Pattern Prompt Builder
Build prompts for seamless textures, materials, and surface patterns
Tiled Diffusion Settings Guide
Generate high-resolution images with Tiled Diffusion without VRAM overflow
TTS Reading Speed Calculator
Estimate audio duration from word count and speech rate
TTS SSML Markup Builder
Build SSML tags for pauses, emphasis, and prosody in AI voice generation
Udio Music Prompt Builder
Craft Udio prompts with style tags, era, and production quality descriptors
AI Upscaling Size Calculator
Calculate output dimensions for 2× / 4× / 8× AI upscaling
SD VAE Selection Guide
Choose the right VAE for sharp colors, skin tones, or anime style in SD
Seed Variation Strategy Guide
Use seeds and variation strength to explore controlled creative variations
Vast.ai GPU Cost Estimator
Compare Vast.ai instance costs for running SD, Flux, or video models
Video Duration × Quality Credit Planner
Plan video generation batches to stay within your credit budget
Video Generation Credit & Cost Calculator
Compare Sora, Runway, Pika, and Kling costs per video by length and quality
Video Generation Negative Prompt Guide
Avoid flickering, morphing, and watermarks with video AI negative prompts
Video Resolution & Bitrate Calculator
Calculate file size and bandwidth for AI video outputs at any resolution
Video Storyboard Prompt Sequencer
Plan multi-shot AI video sequences with consistent scene and character prompts
Video-to-Prompt Reverse Engineering Guide
Extract recreatable prompts from AI video examples you admire
AI Video Upscaling Workflow Guide
Upscale AI-generated videos from 512p to 4K with Topaz and ESRGAN
Voice Acting Direction Prompt Builder
Write AI voice generation directions with emotion, pace, and delivery style
Voice Clone Training Script Formatter
Format voice clone training scripts with phonetic diversity requirements
SSML Prosody Builder
Build <prosody> SSML tags for pitch, rate, and volume control in TTS
GPU VRAM Requirements Calculator
Check if your GPU can run SD 1.5, SDXL, Flux, or video models
Frequently asked questions
Are these AI tools free?
Yes. Every AI tool is free with no account or usage limit. The site is supported by unobtrusive ads. Tools that call a live model use your own API key, billed by your provider — not us.
Do you see my prompts or API key?
No. Tools run entirely in your browser; any prompt, key or data you enter is never transmitted to or stored on a Gera server. Live-model tools call the provider (OpenAI, Anthropic, etc.) directly from your browser.
Which models are supported?
The calculators and comparisons cover GPT-4o/o-series, Claude, Gemini, Llama, Mistral and more; live tools work with any provider whose API key you supply.
Do I need an API key?
Most tools (token counters, cost calculators, prompt builders, comparisons, output cleaners) need no key at all. Only tools that actually run a prompt against a live model require your own key.