Duet
Pricing

Simple, powerful pricing.

Every plan includes messages per session. Switch models anytime.

Switch models anytime
Cancel anytime
3-day free trial on all plans
Free
$0
50 messages per session

Try it with a friend. No card needed.

50 messages per session
Up to 2 participants
Public sessions only
Free models (Llama, Qwen, Gemma, Mistral)
Sessions expire after 24h
1-day session history
Start for free
Popular
Pro
$12/mo
500 messages per session

For pairs who think together regularly.

500 messages per session
Up to 2 participants
Private sessions
All models incl. Claude, GPT-5, Gemini Pro
90-day session history
PDF and Markdown export
3-day free trial
Start free trial
Scale
Enterprise
Custom
Custom message limits

Compliance, SSO, and dedicated infrastructure.

Custom message limits
Unlimited participants
All models incl. Claude Opus, GPT-5, Grok 4
SSO / SAML 2.0
Audit logs and compliance export
Data residency options
365-day session history
99.9% SLA
Talk to us
Models

Available models.

Free plans include open-source models. Pro unlocks the best frontier models from every provider.

Free models

Auto (best available)OpenRouter
Llama 3.3 70BMeta
Qwen 3 Next 80BAlibaba
Qwen 3 CoderAlibaba
Gemma 3 27BGoogle
Mistral Small 3.1Mistral
Hermes 3 405BNous Research

Pro models

Claude Sonnet 4.6Anthropic
Claude Opus 4.6Anthropic
GPT-5OpenAI
o4-miniOpenAI
Gemini 2.5 ProGoogle
DeepSeek V3.2DeepSeek
DeepSeek R1DeepSeek
Grok 4xAI

All messages cost the same regardless of model. Pick the best model for the job.

FAQ

Pricing questions.

Everything you need to know about plans, limits, and billing.

Each message you send to the AI counts as one message toward your session limit. AI responses do not count. You and your session partner can both send messages - each one counts individually.

When you reach the message limit for a session, you'll see a notification and the input will be disabled. You can start a new session to continue, or upgrade your plan for a higher limit.

Yes. You can change the model at any time. There's no lock-in - use a free model for a quick chat and a pro model for deep work, all in the same session.

Yes. All paid plans include a 3-day free trial. A credit card is required to start the trial, but you can cancel anytime before it ends.

Free sessions expire after 24 hours. Pro sessions are available for 90 days. After expiry, session history is no longer accessible, but you can always start new sessions.

3-day free trial on all paid plans

Start with 50 free messages today.

Open a shared AI session in seconds. Choose your model, invite a collaborator, and start thinking together.