MultiAI
New: Character customization · Role × Personality × Age

Um prompt.
Todas as IAs lado a lado.

Envie a mesma pergunta para modelos da OpenAI, Anthropic e Google em paralelo. Compare respostas, tempos, tokens e custo em um só lugar.

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No credit card · Start with your own API keys

→ "Give me 3 pricing plans for a new SaaS."
OpenAI
GPT-5
💹 Economist / 🧐 Serious
Anthropic
Claude Opus 4.7
🎨 Designer / 🤗 Gentle
Google
Gemini 2.5 Pro
🚀 Operator / 🗡️ Blunt

Everything you need, in one dashboard

Model differences become obvious. Compare and keep chatting in the same view.

Use suas próprias chaves

Não cobramos pelo uso da IA — você paga diretamente a cada provedor.

Streaming paralelo

As respostas de cada modelo aparecem em tempo real, lado a lado.

Custo e velocidade visíveis

Tempo de resposta, tokens de entrada/saída e custo estimado por resposta.

Build each characterNEW

Combine role × personality × age × gender × tone per model. Make GPT-5 a strict economist and Claude a gentle teenager — simultaneously.

Turns stack

Each prompt builds on the conversation. The view auto-scrolls to the latest turn. Earlier turns stay visible.

13 languages

English, Japanese, Chinese (Simplified/Traditional), Korean, Spanish, French, German, Russian, Portuguese, Arabic (RTL), Hindi, Indonesian.

Start in 2 minutes

1
STEP 1

Sign up

10 seconds with email + password. Google sign-in coming.

2
STEP 2

Add API keys

Register the ones you have — OpenAI, Anthropic, Google. A connection test button verifies instantly.

3
STEP 3

Compare

Pick your models and ask. Answers stream in side by side.

$0

Genuinely free.

No subscription. You pay each AI provider directly for their API usage. We run on ads.

Questions

Is it really free?
No subscription fee to us. You only pay each AI provider (OpenAI, etc.) for their API usage — billed directly by them.
Are my API keys safe?
Keys are AES-256-GCM encrypted at rest. Even we can't read them in plaintext. Transit is HTTPS; keys are sent only to each respective provider.
Which models are supported?
The latest from each provider: GPT-5, o3, GPT-4.1, GPT-4o family, Claude Opus 4.7 / Sonnet 4.6 / Haiku 4.5, Gemini 2.5 Pro/Flash and more.
How many models at once?
Up to 10 models per prompt. 3–5 is the sweet spot for readable comparison.

Run your first comparison

One email to sign up. If you already have keys, you're ready in seconds.

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