Four models. One mission.
Start with Octana free. Step up to Sondet, Kodekai, or build on Tharus.
Octana
Get to know augmented intelligence.
$0/mo
- Octana model — our base augmented model
- 10 messages per day
- Message sentiment detection
- Conversation history
Sondet
For everyday emotion-aware conversations.
$10/mo
Billed monthly
- Sondet model — tuned for tone + nuance
- 500 messages per month
- Sentiment + tone analysis on every reply
- Full conversation history
- Email support
Most popular
Kodekai
Unlimited, with deeper memory and reasoning.
$20/mo
Billed monthly
- Kodekai model — our most capable, long-context
- Unlimited messages
- Live emotion + tone awareness
- Mood-adaptive replies
- Conversation memory across chats
- Priority support
Tharus
For builders — API access and the highest limits.
$50/mo
Billed monthly
- Everything in Kodekai
- Tharus developer model with extended context
- API access with your own keys
- Highest rate limits + concurrent sessions
- Webhooks for emotion + tone signals
- Dedicated developer support
Tax, fraud, disputes, and receipts are handled for you on every transaction.