Send the same question to GPT-5, Claude Opus 4.7, Gemini 2.5 Pro and more — in parallel. Compare answers, response times, tokens, and cost as they stream.
No credit card · Start with your own API keys
Model differences become obvious. Compare and keep chatting in the same view.
We don't charge for AI. You pay each provider directly. Keys are stored AES-256-GCM encrypted — never retrievable in plaintext.
Every selected model starts writing at once. You wait only for the slowest one.
Response time, input/output tokens and estimated cost shown per answer. Lifetime total pinned to the header.
Combine role × personality × age × gender × tone per model. Make GPT-5 a strict economist and Claude a gentle teenager — simultaneously.
Each prompt builds on the conversation. The view auto-scrolls to the latest turn. Earlier turns stay visible.
English, Japanese, Chinese (Simplified/Traditional), Korean, Spanish, French, German, Russian, Portuguese, Arabic (RTL), Hindi, Indonesian.
10 seconds with email + password. Google sign-in coming.
Register the ones you have — OpenAI, Anthropic, Google. A connection test button verifies instantly.
Pick your models and ask. Answers stream in side by side.
No subscription. You pay each AI provider directly for their API usage. We run on ads.
One email to sign up. If you already have keys, you're ready in seconds.
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