> ## Documentation Index > Fetch the complete documentation index at: https://docs.trynito.ai/llms.txt > Use this file to discover all available pages before exploring further. # Model ID Convention > How model IDs are named in the Nito catalog, and how a model's name tells you its privacy level. Every model you pick in the plugin has an **ID**: the exact string you pass to [`model`](/commands/choosing-a-model) or `--model`, and the name you see when you browse with [`models`](/commands/choosing-a-model). Once you can read a model ID, the [Model List](/models/all-models) and every example in these docs become self-explanatory. ## What a Model ID Looks Like A model ID names a provider and a model: ```text theme={"theme":{"light":"github-light","dark":"github-dark"},"languages":{"custom":["typescript","python","curl"]}} / ``` For example: ```text theme={"theme":{"light":"github-light","dark":"github-dark"},"languages":{"custom":["typescript","python","curl"]}} anthropic/claude-sonnet-5 openai/gpt-5.5 google/gemini-3.1-pro-preview ``` You do not hold accounts with those providers or manage their keys. The ID is just the catalog name Nito uses so you can reach the model through one plugin. ## The `:confidential` and `:encrypted` Markers Some models also appear in a stronger variant, whose ID carries a marker at the end: ```text theme={"theme":{"light":"github-light","dark":"github-dark"},"languages":{"custom":["typescript","python","curl"]}} z-ai/glm-5.2 # the Private entry z-ai/glm-5.2:confidential # the Confidential entry z-ai/glm-5.2:encrypted # the Encrypted entry, coming soon ``` These are separate catalog entries. You do not invent the marker or staple it onto any model; it is part of the name of a model that offers that level, and you select the entry the same way you select any model. Choosing the `:confidential` entry runs your call in a sealed environment you can verify. The [Model List](/models/all-models) shows which models carry it. The `:encrypted` marker is part of the same convention, and the plugin cannot run one yet. Choosing an `:encrypted` entry returns a message pointing you back to Anonymous, Private, and Confidential. When client support ships, it will add client-side encryption on top of Confidential and turn off web search, file attachments, tools, and streaming. See [Encrypted](/privacy/levels/encrypted). ## The Level Is Part of the Model This is the key idea: a model's privacy level is a property of the model you choose, not a separate switch you flip. The plain entry, the `:confidential` entry, and the `:encrypted` entry are different models at different levels. Because the level travels with the model, it cannot drift, and it never silently downgrades: if a model cannot serve a call at its level, the call fails with a clear message rather than dropping to something weaker. See [Level Follows the Model](/privacy/levels). ## Logical Names, Not Backends The ID you use is a **logical** name: a stable public name that Nito maps to whichever backend can actually run it. You name `x-ai/grok-4.6`; Nito finds a healthy, eligible backend that serves it. You never pin a specific backend yourself, and the name stays the same even as the plumbing behind it changes. ## If You Do Not Name a Model If you never set a model, the plugin uses a built-in default so your first call works without a model-picker round trip. Naming a model explicitly is recommended once you know your preference, so your results do not change if the default changes. See [Choosing a Model](/commands/choosing-a-model). ## Reading IDs in Practice * **Browse for exact IDs.** The catalog is discovered live and changes over time, so confirm an ID with [`models`](/commands/choosing-a-model) rather than pasting one from memory. * **A `:confidential` marker means the Confidential level.** No marker means the model's own stored level (Anonymous or Private). * **The level follows the model.** Pick the entry whose level matches how sensitive the call is. See [The Four Levels](/privacy/levels). ## Related Resources Every current model, grouped by privacy level. The four levels, in brief. From task to the right model and level.