The words we use, and what they mean.
Written so you can check a term mid-conversation. Where a definition has a consequence, the consequence is in it.
The conversation
- Assistant window (overlay)
The narrow window the answers appear in. It sits above your other windows, is kept out of screen shares, and can be moved, dimmed and hidden. Distinct from the application.
- Application (shell, desktop app)
The large window holding your account, preparation, knowledge base and settings. Two separate surfaces with different jobs: you prepare in the application and work in the assistant window.
- Briefing
The summary built from your own documents before a conversation: what it is about, which numbers are in play, where it gets difficult.
- Case profile
The structured description of a specific case or customer that preparation and answers are based on.
- Concealment
The property of being absent from screen recordings. Technically two different calls, one to Windows and one to macOS; the application shows whether it is active. It works against screen capture, not against a camera pointed at your screen.
- Debriefing
What remains after the conversation: open points, commitments made, an assessment of how it went. The transcript itself is deleted.
- Mode
The kind of conversation, which shapes the form of the answer: sales, advisory, interview, examination and others.
- Playbook
A prepared set of typical questions and objections for one kind of conversation. Eight ship with the product; you can add your own.
- Practice mode
The reverse case: Thalassa asks you the uncomfortable questions, at an adjustable severity, with no conversation running.
- Scenario lab
Playing through "what if the other side says X" before the meeting.
- System audio
The sound your computer plays — that is, the other person’s voice out of the meeting. Distinct from the microphone, your own voice. Thalassa hears both, separately.
- Trigger
The decision about when an answer is generated. Not every sentence is a question; what gets recognised are questions and objections directed at you. Sensitivity is adjustable, and you can always request an answer yourself.
Answers, models and knowledge
- Anonymisation
Replacing names, file numbers, figures and absolute dates with placeholders. It is fail closed: if recognition fails, nothing is passed on.
- Confidential mode
A switch that replaces personally identifiable details with placeholders before anything goes to a model, and translates the answer back afterwards.
- Evidence requirement
The rule that figures and claims must come from a source. If nothing is found, the knowledge base is skipped for that answer rather than padded. In the Legal module this is tightened into a citation requirement: no source, no answer.
- Knowledge base
Your own documents, which you add and which answers are drawn from first. They are read, indexed and searched on your device. Not to be confused with the library. One named exception at ingest: a scanned PDF has each page sent once for text recognition.
- Library
The source collection we maintain, intended to belong to the specialist plans. Empty today.
- Live translation
Running translation of what is said, as text to read along, not as an interpreter’s voice. Billed separately.
- Model tier
Four graded language models, from fast to thorough. Which one answers is decided by the system from the task and your plan; the choice is not the user’s.
- Pseudonym
An identifier that stands in for a person without naming them, and that cannot be reversed without a server-side secret.
- Screen analysis
A single capture of the screen for exactly one answer, on explicit request. Not continuous, not in the background.
- Speech recognition (transcription, STT)
Turning sound into text, in 17 languages including automatic detection.
Plans and billing
- Auto top-up
The configurable rule for the balance at which more is bought automatically, with a spending cap.
- Conversation minute
The billing unit. One minute of running conversation is one minute, regardless of how many answers came in it.
- Credit (balance)
Minutes bought in advance. They expire 365 days after their purchase; subscription minutes do not carry over.
- Executive Interview Intensive (Executive Pass)
Not a ticket but a window of time: 14 days of full capability, for interviews only.
- Fair-use ceiling
The hourly cap of a plan. The only quantity in the system allowed to end a conversation in progress — an empty balance does not.
- Final price
The price shown, including VAT. There is no separate net price list.
- Half-unit
90 minutes. A ticket is built from two of them, which is why a shorter conversation can cost half a unit.
- Merchant of record
The seller in the legal sense. For Thalassa that is the payment provider: it issues the invoice, remits the VAT and enters into the purchase contract. This is why cancellation and invoices live in their portal and not with us.
- Quota (pool)
The monthly number of answers per model tier. Separate from minutes: you can have minutes left and a quota exhausted.
- Ticket
A one-off purchase without a subscription: one conversation of up to three hours.
Privacy and security
- Controller
Whoever decides the purpose and means of processing. For the contents of your conversations, that is you, not us.
- EU data path
The commitment that processing happens in the EU (Frankfurt), with named exceptions: answers that use web search, optional live translation, and text recognition for scanned files at ingest.
- Fail closed
Building something to refuse rather than pass through when it fails. An anonymiser that returned the original text on error would be more dangerous than none at all.
- GDPR
The EU General Data Protection Regulation. Governs who may process personal data under what conditions.
- Keyring
Several valid keys at once: the first encrypts new values, all of them can read old ones. This is what lets a key be rotated without destroying existing connections.
- Processor
Whoever processes on instruction without deciding the purpose. That is the role Thalassa takes for conversation content; the providers we use are sub-processors.
- Rate limiting
The cap on requests per period, against overload and automated guessing.
- Signing and notarisation
The certificate a maker uses to identify an application as theirs, and Apple’s additional check. Without them the operating system warns. Thalassa has neither yet.
- Circuit breaker
The mechanism that bypasses a repeatedly failing provider instead of continuing to ask, then tests it with exactly one probe.
- Transport encryption
Protection of data on the wire (HTTPS). To be distinguished from encryption at rest, on the storage medium.
Architecture
- Backend
The service in the data centre that receives requests, talks to the model providers and keeps account and usage. The application on your device holds no provider credentials.
- Ledger
Keeping usage as a sequence of bookings rather than as a counter. Every minute can be derived, and parallel requests cannot confuse the balance.
- Local search
Searching your own documents on your device. A search query reaches no external server.
- Security core
The design in which keys exist only server-side. Take the installed application apart and there is nothing worth extracting.
The principle behind the Legal module: one sign-in, one bill, one interface — but a separate database, speech recognition, model path and retention.
- Text recognition (OCR)
Reading text out of images, needed for scanned PDFs. Switchable off, because a page image leaves your device for it.
