Autocomplete without uploading your work text
4 min read
Type "I’ve attached the" in Slack and a grey suggestion continues the sentence at the cursor. Tab takes the full suggestion, while the right arrow takes one word. Typeahead runs the completion on the Mac, so the Slack field stays active while the sentence moves forward. Typeahead processes writing locally.
On a Mac running macOS 14 or later, Typeahead completes your sentence on the Mac and does not send your writing to a cloud model.
For a buyer, the useful evidence is a measured typing interval. Complete setup, record Typeahead’s sent and received byte counts in Activity Monitor, type invented work material and compare the counters. That observation ties the local-processing requirement to the installed app instead of relying on a broad privacy label.
Suggestions stay on your Mac
Typeahead reads the nearby text needed to complete the sentence and places a suggestion at the cursor. You accept the full suggestion with Tab or one word with the right arrow. A different letter dismisses it, leaving the text you entered in place. The field remains active throughout the interaction.
A precise data path is more useful than a broad privacy label. License activation handles the license, an optional update check looks for a software update and the model download retrieves the local model. Local inference changes who receives the draft, not merely how long a service keeps it.
Sentence completion starts after you have already chosen the point to make. The useful buyer test is whether the continuation appears inside the active field, accepts in predictable increments and leaves the surrounding work visible. Those behaviors can be checked in the apps your team uses rather than inferred from a feature list.
Typeahead serves the cursor: you begin the sentence, the local model suggests its continuation and you remain the author. Sentence completion is its own writing job.
Type "Could you send the" in Mail and the proposed ending appears where the sentence is already taking shape. Tab accepts it without moving focus to another window. The same controls apply in Slack, Pages and a browser field, which keeps the document and its surrounding context visible. The thought stays at the cursor instead of taking a detour.
Inspect the traffic during ordinary typing
Activity Monitor provides a test that can be repeated with ordinary typing. Complete activation and the model download first, then record the sent and received byte counts for Typeahead. Sample material can resemble confidential work while using invented names, figures and projects. This keeps real company information out of the test while preserving the sentence patterns used during work.
- Open Activity Monitor.
- Select Network.
- Find Typeahead.
- Record its sent and received byte counts before the typing interval.
- Type confidential-looking sample text into a local field, accept suggestions with Tab and compare the counters.
Activity Monitor’s Network view reports packets and data sent and received. Stable counters during the typing test support the local-completion claim for the Typeahead process. If the counters change, record the result, take a fresh baseline and repeat the typing sequence during another measured interval.
Use enough sample text to accept several suggestions rather than judging a single keystroke. Record the starting counters, type the material and record the ending counters before opening another window. That sequence gives the test a clear start and finish. It also separates typing from setup activity that may occur near the same time.
The acceptance controls make the test easy to follow. Tab takes a proposed ending and the right arrow takes the next word, so each completed phrase is visible in the sample. Activity Monitor supplies the matching process-level observation. Together, the field and the counters show what happened during the measured interval.
Verify local processing before purchase
For a buyer with a local-processing requirement, the useful record is a baseline, a measured typing interval and an ending count. Complete activation and model delivery before taking the baseline. Then keep other windows closed during the measured interval so unrelated browsing does not complicate the observation.
Use sample material that follows the shape of internal work without copying real plans, financial figures or personnel details. Invented project names and amounts let you accept several completions under realistic sentence patterns. Save the starting and ending sent and received counts with the app version and macOS version used for the check.
Run the same sequence on the Macs included in the purchase review. A stable process count during typing supports the local-processing requirement for that installation. If the count changes, save that result, take a new baseline and repeat the measured interval.
Procurement can retain the screenshots or captured counts with the security review. The record identifies the application, device configuration and observation period, which makes the result reproducible when the installed version changes. Keep the before-and-after totals with the review as evidence for the buying decision.
