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How to use 120 AI Chat ​

Chat with cloud and local models, compare answers, and work with files, web pages, images, and video.

Connect a cloud or local model ​

  1. Open Settings > AI Providers.
  2. Select Configure beside your provider, enter its API key or server details, and select Save.
  3. Choose a model from the model picker below the message field.

120 AI Chat dark-mode Settings window showing the AI Providers list and configuration controls

Start a conversation ​

  1. Select New conversation in the title bar.
  2. Choose a model, write your message, and select Send.
  3. Ask follow-up questions in the same conversation.

120 AI Chat dark-mode new conversation with a selected model, message field, and send control

Select a conversation in the sidebar to continue it.

Compare models side by side ​

  1. Add threads with New thread in the title bar, up to three threads per conversation.
  2. Select the model name beneath each thread to choose its model.
  3. Write a message in the shared message field and select Send to compare responses.
  4. Drag the dividers between threads to adjust their widths.

120 AI Chat dark-mode conversation comparing three models in separate resizable thread panes

Use the layout button above the message field to switch between vertical and horizontal layouts.

Adjust context, instructions, and reasoning ​

Open Thread settings beside the model picker, or select the model name beneath a thread.

  • Model: choose the provider and model for this thread.
  • Reasoning effort: adjust how much reasoning the model uses.
  • Message context limit: choose how many earlier messages to include.
  • Output token limit: set the maximum response length.
  • System prompt: set instructions, a writing style, or an output format.
  • Temperature, Presence penalty, Frequency penalty, and Top P: adjust response variation.

120 AI Chat dark-mode Thread drawer showing model, reasoning effort, context, output token limit, system prompt, and sampling controls

Click outside a text field to apply your changes.

Attach images and documents ​

  1. Select + above the message field and choose up to three files: images, PDFs, or text files.
  2. Check your attachments. Select × beside a file to remove it.
  3. Add your question and select Send.

120 AI Chat dark-mode message composer with a text-file attachment and web search enabled

Enable Web search beside the model controls, ask a question, and select Send. Open the source links in the response to read more.

To ask about a web page, paste its URL into your message and add your question.

Generate images and videos ​

  1. Choose an image or video model in the model picker.
  2. Describe what you want to create and select Send.

120 AI Chat dark-mode new conversation with an image-generation model selected and an example image prompt

To edit an image, choose an image-editing model, attach the image, and describe your changes.

Use a temporary conversation ​

  1. Start a new conversation and select the ghost button above the message field.
  2. Choose a model and chat as usual.
  3. Select the ghost button again to keep the conversation.

120 AI Chat dark-mode new conversation with the temporary-conversation ghost control enabled

Work with messages ​

Use the action icons beneath a message:

  • Copy: copy the message text.
  • Edit: change a message and save your edits.
  • Regenerate message: generate another response.
  • Stop generation: stop the current response.
  • Speak: read the message aloud. Select Stop speaking to stop playback.
  • Delete message: remove a message.

120 AI Chat dark-mode conversation showing message text and its copy, bookmark, edit, speech, regenerate, and delete actions

Use Previous message, Next message, and Jump to latest message to navigate long threads.

Find and organise conversations ​

Use Search conversations… in the sidebar to find a conversation by title. Right-click a conversation to:

  • Star a favourite, or Unstar it.
  • Rename its title.
  • Delete it.

120 AI Chat dark-mode conversation sidebar with the right-click menu for starring, renaming, or deleting a conversation

Bookmark useful messages ​

  1. Select Bookmark beneath a message you want to revisit.
  2. Select the bookmark icon in the title bar to see your saved messages.
  3. Select a bookmark to jump to that message.
  4. Use Delete bookmark to remove it from the list.

120 AI Chat dark-mode bookmarked-message drawer with an example saved response and copy and delete-bookmark controls

Adjust the appearance ​

Open Settings > Appearance to customise the interface:

  • Color mode: choose light, dark, or system appearance.
  • Density: switch between compact and comfortable spacing.
  • App theme and palettes: choose interface colours, styling, and syntax-highlighting themes.
  • Notification stacking and Notification anchor: choose how and where notifications appear.

120 AI Chat dark-mode Appearance settings with theme, density, syntax-highlighting, and notification controls