Generating focused unit tests against a function under test. The cloud coding assistants category answers this with a remote model; Outlier answers it with the on-device Core tier. This page is the side-by-side specifically for writing unit tests workloads.
Outlier Pro: $49 once · Black Friday price, all of November: $24.50 once, until 30 November
Free to start (Nano and Lite). macOS 15+, Apple silicon. Refund window: 30 days, no questions asked.
For writing unit tests, the deciding axis between Outlier and cloud coding assistants is the data path. Hosted code completion and chat tools sold as a plan or subscription. Outlier holds the prompt and response for writing unit tests on the Mac and delivers tokens at the local memory bandwidth of the chip; on the recommended Core tier, that means working out of the on-disk checkpoint without a network round-trip per turn.
Network round-trip every prompt. For a writing unit tests workflow against cloud coding assistants, the practical consequences are tail-latency variance (the network adds unbounded variance per turn) and the writing unit tests prompts leaving your Mac on every request. Outlier’s chat path on the Core tier issues no outbound HTTPS once the model is on disk, and your chats, files and prompts never leave the Mac. The app does go online for a few other things: the one-time 15.13 GB tier download from Hugging Face, the update check, the price shown when an upgrade window opens and, on Pro, the licence check. Web search goes out only if you turn it on (Pro).
If you are coming from cloud coding assistants for writing unit tests, the right starting point on Outlier is the Core tier: 15.13 GB on disk, sitting at the quality-vs-speed inflection point for writing unit tests; cloud coding assistants users typically want what they had plus privacy; the Core tier is the closest match for that without giving up answer quality. Heavier work moves up to the higher tiers in the same app; the Quick tier is not the pick for agent-driven work on writing unit tests, because it produced no patch in any of 50 tries on a blind SWE-bench Verified sample.
Moving a writing unit tests workflow from cloud coding assistants to Outlier is a one-time DMG install plus a 15.13 GB pull for the Core tier. Outlier has no sign-in step, no per-token meter, and no rate-limit page to redirect through. The Core tier is part of Pro, so you paste a licence key once to activate it; Nano and Lite are the free tiers. The writing unit tests loop after install is open-prompt to local-decode.
For a writing unit tests workload moving off cloud coding assistants onto the Core tier: Core is the coding tier. It was briefly split into a separate “Code” entry that shared the identical weights; that split is gone and Core carries the code-first defaults. The MLX explainer has the per-tier breakdown if you want to see how it compares with cloud coding assistants. The measured accuracy figures are on the tier benchmarks page (MMLU for every tier but Plus; HumanEval for Core and Vision 3.8 only), and for writing unit tests specifically: HumanEval is itself a pass-rate on generated code, so of the tasks here it is the one the metric speaks to most directly (it was run on Core and Vision 3.8 only).
Test scaffolding is bursty: ten short turns to land a green suite. Cloud round-trip variance shows up here because each turn is small enough that the network is half the latency.
Outlier’s local-only chat path has no sign-in, no auth token and no metered usage: the writing unit tests workflow runs against the on-disk Core tier, no token leaves the device.
This page positions Outlier as an alternative to cloud coding assistants for writing unit tests workflows, not as a drop-in replacement. Specific product surfaces in the cloud coding assistants category (IDE-integrated suggestions, web-based shared sessions, team-managed prompt libraries) are out of scope for the local app loop and we do not claim equivalence for those when writing unit tests is part of a larger team workflow.
For writing unit tests: one network round-trip per prompt with cloud coding assistants versus zero round-trips with Outlier on the Core tier: the difference is unbounded latency variance against bandwidth-bound, repeatable local throughput.
Download Outlier for MacOn your phone?
Free · M1 or newer · macOS 15+ (free update) · 276 MB. Intel Macs are not supported.
Outlier Pro: $49 once · Black Friday price, all of November: $24.50 once, until 30 November
Refund window: 30 days, no questions asked.
Open weights ship constantly and most are not worth your disk. When one beats a tier Outlier already has, on hardware you already own, we say so and what it replaces. That is the only reason we email.
Your address and which site you sent it from. No IP, no user agent, no referer. Nothing is sent until you press the button. Privacy.
Outlier runs entirely on your Mac. No prompts leave the device. macOS 15+ on Apple Silicon (arm64). Apache 2.0 model weights. Back to home.
Made by Kerr & Company