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Tools

Interactive tools built for people who work with AI. All client-side, nothing leaves your browser.

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Chat Playground

Chat with any AI model via OpenRouter. Side-by-side comparison, streaming, cost tracking.

▸ 21 models, live cost tracking Try it →
Interactive 7
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Chat Playground

Chat with any AI model via OpenRouter. Side-by-side comparison, streaming, cost tracking.

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Prompt Workbench

Full prompt IDE. System/user/assistant prefill, variables, 8 templates, save/load, multi-format export.

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Model Explorer

Visual map of the AI model landscape. Timeline, capability bars, pricing calculator.

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Model Comparison

Sortable table of AI models with capability scores, pricing, and context windows.

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Token Cost Calculator

Estimate API costs per prompt or full conversation. Breakdown by turn, model comparison.

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Prompt Diff

Compare two prompt versions with word-level diff, token delta, and cost difference.

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JSON Output Validator

Validate AI model JSON output against a schema. Presets for tool_use, function calls, classification.
Write-ups 26

Ollama

Run open-source LLMs locally with one command. No GPU required.

active
local-llm open-source self-hosted

Cursor

An AI-first code editor built on VS Code. Autocomplete on steroids.

active
code-editor ai-coding ide

DuckDB

An in-process SQL database that chews through analytical queries without a server.

active
database analytics sql

uv

A Python package manager written in Rust. Installs packages in seconds, not minutes.

active
python package-manager rust tooling

TruLens

An open-source library that instruments LLM applications to trace every step and measure performance with feedback functions.

experimental
llm-evaluation observability tracing debugging

Composio Agent Orchestrator

Open source framework for building production-ready multi-agent workflows that go beyond simple ReAct loops.

experimental
multi-agent orchestration open-source production

OpenAI WebSocket Mode

Real-time voice AI without the latency nightmare of chaining STT, LLM, and TTS.

experimental
websockets voice-ai low-latency openai

Sakana AI's Doc-to-LoRA and Text-to-LoRA

Hypernetworks that instantly convert documents or natural language instructions into LoRA adapters without training.

experimental
lora hypernetworks zero-shot adaptation fine-tuning

Liquid AI LocalCowork

A privacy-first desktop agent that runs entirely locally using Model Context Protocol, eliminating API calls for sensitive workflows.

experimental
local-ai privacy agent-frameworks model-context-protocol

LiteRT

Google's new universal on-device inference framework that replaces TensorFlow Lite and now supports PyTorch models.

experimental
edge-deployment mobile-ai inference tensorflow

OpenJarvis

Stanford's open-source framework for building personal AI agents that run entirely on-device with tools, memory, and learning capabilities.

experimental
ai-agents local-first on-device stanford open-source

GLM-OCR

A compact 0.9B multimodal model that handles document parsing, tables, and structured extraction without burning through compute resources.

experimental
ocr multimodal document-parsing key-information-extraction

Outlines + Pydantic

A Python combination for building type-safe LLM pipelines with strict schema validation and JSON recovery.

experimental
python structured-output validation llm-pipelines

Google Colab MCP Server

An open-source Model Context Protocol server that lets AI agents directly control Google Colab notebooks with GPU access.

experimental
mcp colab ai-agents gpu-compute

LiteParse

A TypeScript-native CLI tool that handles spatial PDF parsing for AI agent workflows without the usual headaches.

experimental
pdf-parsing rag typescript cli-tools

Google-Agent

Google's new user agent that distinguishes AI-powered searches from traditional web crawling.

experimental
web-crawling user-agents google ai-search

Voxtral TTS

Mistral's first open-weight text-to-speech model with streaming capabilities for low-latency multilingual voice generation.

experimental
text-to-speech streaming open-weights multilingual

AutoAgent

An open-source library that automatically engineers and optimises AI agents overnight, eliminating the tedious prompt-tuning loop.

experimental
agent-optimisation prompt-engineering automation open-source

NVIDIA AITune

Open-source toolkit that automatically finds the fastest inference backend for any PyTorch model.

experimental
pytorch inference optimization nvidia tensorrt

VOID

Netflix's open-source AI model erases objects from videos whilst maintaining realistic physics and lighting.

experimental
video-editing computer-vision open-source netflix

TriAttention

A KV cache compression method that maintains full attention quality whilst delivering 2.5× higher throughput for long-context inference.

experimental
attention-mechanisms kv-cache memory-optimization inference-acceleration

Google Auto-Diagnose

An LLM-powered system that automatically reads integration test failure logs and identifies the actual bugs amongst thousands of lines of output.

experimental
testing debugging llm-tools devops

Auto-Diagnose

Google's LLM-powered system that automatically reads integration test failure logs and pinpoints the actual bugs.

experimental
debugging testing llm-tools software-engineering

Context Window Visualiser

Compare context window sizes across 8 major AI models with interactive usage simulation.

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context models visualisation comparison

softcat.ai

This site. A self-maintaining AI site powered by Astro, Tailwind, and an automated content pipeline.

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astro tailwind github-pages meta

Token Cost Calculator

Estimate the API cost of your prompts across AI models. Single prompt or full conversation mode with per-turn breakdown.

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tokens cost pricing calculator