Developer Tools
Handy utilities for developers building with AI APIs. Local converters stay in your browser. Some tools call AICredits APIs or open trusted external resources.
AI API Budget SimulatorNew
Estimate your monthly AI API costs in ₹ before you commit. Choose a model, set your daily request volume and token counts — get an instant INR breakdown. No sign-up required.
MCP Config GeneratorNew
Generate a ready-to-paste MCP config for Cursor, Claude Code, or VS Code + Continue. Paste your AICredits API key and get a JSON block that routes 300+ models via AICredits.
API Request Builder
Generate ready-to-run cURL, Python, TypeScript, and Go code for OpenAI, Anthropic, Gemini, and AICredits. Includes streaming, vision, JSON mode, and tool-calling examples.
Model Finder
Filter 300+ LLMs by provider, vision support, context window, price range, and free tier. Objective data only — no rankings, just facts to help you choose.
JSONL Fine-tuning Validator
Validate fine-tuning datasets in JSONL format for OpenAI and Anthropic. Detects duplicates, empty responses, oversized samples, and estimates fine-tuning cost.
Prompt Engineering Playground
Build structured system prompts with role, instructions, output format, constraints, and few-shot examples. 20+ ready-made presets to get started fast.
JSON Schema Generator
Describe your data in plain English and get a JSON Schema, Pydantic model, and Zod type — ready for OpenAI structured outputs or Anthropic tool definitions.
RAG Chunking Simulator
Paste a document and preview how it splits into chunks at different sizes and overlaps. See token counts and estimated embedding cost before you build your pipeline.
LLM Chat Format Converter
Convert conversations between OpenAI messages[], Anthropic Messages API, plain Human/Assistant text, and JSONL fine-tuning format. Paste any format, get any format.
Cost Calculator
Enter your expected prompt tokens, completion tokens, and requests per day to see exact per-request, daily, and monthly costs in INR and USD across 300+ models.
AI Playground
Chat with GPT-4o, Claude, Gemini, and 300+ models. Paste your AICredits API key — no login required. Supports streaming, image generation, and code snippet export.
Token Counter
Count tokens in your prompt or document and see estimated API cost for GPT-4o, Claude, Gemini, and more. Also shows context window usage.
Context Window Checker
Paste any document to instantly see which LLMs can handle it. Visual progress bars across GPT-4o, Claude, Gemini 1.5 Pro, Llama, and more.
JSON Formatter & Validator
Prettify, minify, validate, or escape JSON for AI prompts — entirely in your browser. Syntax-highlighted output, no data uploaded.
Prompt Diff Tool
Compare two prompts or AI outputs side-by-side with word-level highlighting. Perfect for A/B testing prompt versions and reviewing LLM changes.
Audio to Base64 Converter
Encode MP3, WAV, FLAC, OGG, M4A and other audio files to base64 for Sarvam STT, Whisper, and other AI speech APIs. Preview audio in-browser before copying. Also decodes base64 back to audio.
Base64 to Image Converter
Paste a base64 string and instantly preview the image in your browser. Supports PNG, JPEG, WebP, GIF, SVG. Also encodes local images to base64.
PDF to Base64 Converter
Encode any PDF to base64 to use with Claude, Gemini, or other document AI APIs. Includes a ready-to-use Python snippet. Also decodes base64 back to a downloadable PDF.
System Prompt Library
Browse hundreds of curated system prompts across coding, writing, customer service, education, and more. Maintained by masterprompting.net.
Building with AI APIs?
AICredits gives you one API key to access Claude, Gemini, GPT-4o, Flux, and 300+ other models — pay only for what you use, in INR.
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