1. Capture
Screenshot the problem statement or your code pad from wherever you're looking at it: LeetCode, HackerRank, CoderPad, CodeSignal, or a real interview panel. No plugin, extension, or account connection is required.
Coding Copilot · As of July 2026
OphyAI with LeetCode, HackerRank, CoderPad and CodeSignal: how it works
Yes, OphyAI's Coding Copilot works alongside any coding platform, including LeetCode, HackerRank, CoderPad, CodeSignal, and Codility, because it is vision-based. You capture a screenshot of the problem or pad, and it streams back an approach, working code, and a complexity explanation. No plugin, browser extension, or account connection to those platforms is required.
TL;DR: The Quick Answer
OphyAI's Coding Copilot works alongside LeetCode, HackerRank, CoderPad, and CodeSignal through a screenshot workflow, not a plugin or API integration. Capture a screenshot of the problem or pad, and it streams back an approach, working code, and a complexity explanation, no matter which platform is on your screen. OphyAI has no official integration, partnership, or affiliation with LeetCode, HackerRank, CoderPad, CodeSignal, or Codility. Use it to practice, and in the OphyAI desktop app during a live test or interview, where the answer shows in an overlay that screen sharing and recording leave out.
How the screenshot workflow works
Three steps, no setup on the platform side.
2. Streamed approach and code
Coding Copilot streams back a suggested approach, working code in your chosen language, and a complexity explanation (time and space) beside what you're looking at. Pick a model for the session: Standard, Advanced, or Technical (15 credits), with Technical positioned for coding and whiteboard-style interviews.
3. Follow-up questions
Ask follow-ups in the same session, such as why that approach, what the edge cases are, or whether there's a better solution, the way you would with an interviewer. The session keeps the context of the screenshots you've already shared.
Platform by platform
What each platform is typically used for in hiring, and how the screenshot workflow applies when you're practicing with it.
LeetCode
Practice library and problem styleLeetCode is a problem library candidates use to drill algorithms and data structures on their own time. It's also the informal source for much of the "LeetCode-style" problem phrasing that companies reuse in their own coding rounds.
When you're grinding a LeetCode problem, screenshot the problem statement or your in-progress code and send it to Coding Copilot. You'll get a streamed approach, working code, and a complexity breakdown, the same review structure a mock interviewer might walk you through, without leaving the tab.
For repeated practice, Copilot scheduling lets you line up sessions ahead of a real interview, and Question Bank lets you save the problem types you keep coming back to.
HackerRank
Coding assessments used in hiring pipelinesCompanies commonly use HackerRank to run coding assessments as part of a hiring pipeline, often timed and sometimes proctored, either before or instead of a live interview round.
To practice HackerRank-style challenges on your own time, screenshot the prompt and Coding Copilot streams an approach and working code the same way it would for any other coding problem. In a live HackerRank test or interview, the OphyAI desktop app does the same and shows the answer in an overlay that screen sharing and recording leave out. It is not hidden from HackerRank's own copy and paste and tab tracking.
CoderPad
Shared live coding editor for interviewsCoderPad is a shared, real-time code editor companies use to run live technical interviews, where a candidate writes and often runs code while an interviewer watches or reviews the pad afterward.
Screenshot the pad during a mock session, run with a friend or as an OphyAI mock coding practice, and Coding Copilot returns an approach and code beside it. That's useful for rehearsing the live, collaborative format before the actual interview.
CodeSignal
Automated assessments and live interviewsCodeSignal is used by companies for both automated coding assessments and live interview formats as part of technical hiring.
The same screenshot workflow applies for practice: capture a CodeSignal problem while you work through it on your own, and Coding Copilot streams back a solution approach and code so you can compare it against what you wrote before moving on.
Codility
Timed coding tests and live interviewsCodility is used by employers for timed online coding tests and live technical interviews, often as the first technical screen.
For practice, screenshot a Codility-style task while you solve it on your own, and Coding Copilot streams back an approach, code and complexity notes so you can compare them with your answer. On a timed Codility test or in a live Codility interview, the OphyAI desktop app reads the task the same way.
OphyAI has no official integration, partnership, or affiliation with LeetCode, HackerRank, CoderPad, CodeSignal, or Codility. These platform names are used only to describe how the screenshot workflow applies to each one.
Full guides to each coding test
Format, scoring and proctoring for each platform, from the vendors' own pages.
HackerRankTest cases, partial credit, proctoring modes and the built-in AI assistant.
CodeSignalThe GCA: 4 questions in 70 minutes, scored 200-600, proctored.
CoderPadLive pads with an interviewer, Screen tests, playback and AI assist.
CodilityHidden correctness and performance tests, auto-submit, proctoring.
Karat60 minutes with a Karat Interview Engineer, recorded, with a redo.
Two ways to use it
Practice vs. live use
The workflow is the same in both: one hotkey reads the problem, and Coding Copilot returns an approach, working code and complexity notes.
Practice. Screenshotting a LeetCode problem while you're grinding on your own, or running a mock coding session (with OphyAI or with a friend) using CoderPad or a similar shared editor, builds reps with nothing on the line.
Live use. In a HackerRank or CodeSignal assessment, or a live CoderPad interview, the OphyAI desktop app reads the problem with Cmd/Ctrl + Shift + A and shows the answer card in a floating overlay that macOS and Windows leave out of screen sharing and recording. In a live interview, Space or Cmd/Ctrl + Shift + L transcribes the question your interviewer asks out loud. OphyAI doesn't market Coding Copilot as undetectable or stealth software, and it makes no claims about bypassing proctoring: the overlay is not hidden from a webcam, a person watching, keystroke and paste history, tab or focus tracking, or proctoring software.
For how candidates and employers think about AI help in hiring, see Is using AI in interviews ethical.
System design rounds have their own tool
System design is no longer part of Coding Copilot. It has its own Premium tool, OphyAI System Design. Its Live Copilot reads your whiteboard from a shared tab or window, or a phone photo, keeps one design plan as the round goes, and for each question gives a short answer to say, what to draw next and the key number to mention (30 credits a session).
It works with the board you are asked to use, such as Excalidraw, Miro, CoderPad, Google Drawings or FigJam, as long as it is visible in a shared tab or window. To practice, a mock round puts you on a built-in whiteboard with a voice AI interviewer and ends with a scorecard (20 credits a round).
See System DesignFrequently Asked Questions
OphyAI's Coding Copilot works alongside LeetCode and HackerRank, but not through any official integration or plugin. It's vision-based: screenshot a LeetCode problem or a HackerRank challenge, and Coding Copilot streams back a suggested approach, working code, and a complexity explanation in your chosen language. There's no account connection to either platform, no browser extension to install, and no partnership between OphyAI and LeetCode or HackerRank. Use it to practice, or in a live HackerRank test or interview through the OphyAI desktop app. It is on OphyAI's Premium plan.
OphyAI's Coding Copilot works with CoderPad and CodeSignal the same way it works with any coding surface: by screenshot, not by API integration. Capture the pad or the problem screen, and Coding Copilot returns an approach, code, and complexity notes beside it. OphyAI has no official integration, partnership, or affiliation with CoderPad or CodeSignal. It works in practice sessions and mock interviews, and in live CoderPad interviews and CodeSignal assessments through the OphyAI desktop app, where the answer shows in an overlay that screen sharing and recording leave out.
No. OphyAI does not build or offer a browser extension or plugin for LeetCode, HackerRank, CoderPad, CodeSignal, or any other coding platform. Coding Copilot works entirely through screenshot capture: you take a picture of the problem or pad in front of you, and the AI streams back a response in a separate window. Nothing installs into or attaches to the coding platform itself, which is also why there is no plugin to detect or disable.
OphyAI's Coding Copilot streams a solution approach, working code, and a complexity explanation within seconds of a screenshot. In a live interview, the OphyAI desktop app also transcribes the question your interviewer asks out loud when you press Space or Cmd/Ctrl + Shift + L, and shows the answer in an overlay that screen sharing and recording leave out. OphyAI does not market Coding Copilot as undetectable or stealth software, and it makes no claims about bypassing proctoring or monitoring: the overlay is not hidden from a webcam, a person watching, keystroke and paste history, or tab and focus tracking.
Yes. Screenshotting a LeetCode problem while you're grinding practice sets is exactly the kind of use case Coding Copilot is built for. You capture the problem statement or your in-progress code, and it streams back an approach, working code, and a complexity breakdown, similar to what a mock interviewer would walk you through. You can also run full mock coding sessions in OphyAI directly, then use LeetCode separately to drill the problem types that came up.
Yes. Coding Copilot isn't limited to algorithm problems since it works from whatever you screenshot. A SQL query prompt, a schema diagram, or a database design question gets the same treatment as a LeetCode-style problem: a streamed approach, a working query or answer, and an explanation of the reasoning. There's no separate setup for SQL questions specifically; the vision-based workflow handles it the same way it handles any other coding or technical screenshot.
Practice on any coding platform, screenshot first
Coding Copilot is on OphyAI's Premium plan ($59/mo, 500 credits): 15 credits per session, streamed approach and code, and a Technical model tuned for coding and whiteboard rounds.