Compare prompt results across Llama, Qwen, Gemma, GPT-5, Claude 4.5, and Gemini 3 – side by side. Then fuse them into one answer with the Fusion Lab.
NEW FEATURE🟢 NVIDIA Nemotron Lab — test Nemotron models with Nemotron Synthesis →💰 Free to Start
HuggingFace offers free API access — no credit card required. Get your free token →
⚠️ Model Availability
Paid providers (OpenAI, Anthropic, Google) require a paid plan. HuggingFace models are free with rate limits.
🔒 Your Keys, Your Data
Keys live in your browser only — never stored server-side. Use Incognito for maximum security.
Test up to 5 models on the same prompt
Fuse multiple responses into one synthesized answer
Llama, Qwen, Gemma, GPT, Claude, Gemini & more
Bias, Toxicity, Safety, Hallucinations, PII & more
Upload documents as context for your prompts
Compare costs for all 22 models at a glance
Run up to 5 models, then fuse all their responses into one synthesized answer. BYO keys, pay only for what you use.
🔑 BYO Keys
Pay only for usage
🤗 Open Source
Mix proprietary and open models
💰 Pricing Guide
Full cost chart for all 22 models
Troubleshoot API key issues and check which models are live before running tests.
See Claude connect to live data sources in real-time using Anthropic's Model Context Protocol.
Test NVIDIA's Nemotron models (MoE architecture) via NVIDIA's API. Free tier: 1,000 credits. Now with Nemotron Synthesis — run OpenAI, Anthropic & Google alongside Nemotron, then let Nemotron synthesize all results.