Best AI tools for coding interviews

21st.dev

21st.dev is an AI platform that helps developers and teams build and deploy machine learning models faster. It sits in the machine learning tools category and works for both beginners and more experienced data practitioners. Its main appeal is that it reduces the time needed to go from data to a working model

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Algolia

Algolia is a search-as-a-service platform built for fast, relevant search. It helps businesses improve search across websites and apps, using machine learning and ranking rules to return useful results quickly.

Amazon Q Developer

Amazon Q Developer is an AI-powered coding assistant by Amazon Web Services (AWS) designed to help developers write, debug, explain, and optimize code directly inside IDEs and AWS environments.

Base44

Base44 is an AI app builder that generates full-stack web apps from natural language: frontend, backend, auth, database, payments, and hosting included. It targets founders and teams who want to ship internal tools, client portals, and SaaS MVPs without configuring infrastructure. "Superagents" add workflow automation on top of built apps (vendor claim).

Bolt.new

Bolt.new, from StackBlitz, builds and deploys full-stack JavaScript apps entirely in the browser via WebContainers. The AI agent controls the filesystem, terminal, package manager, and browser console — not just code suggestions. Recent Bolt Cloud adds managed DB, auth, and hosting so prototypes can go live without exporting to Vercel manually (vendor claim, 2026).

Browse AI

Browse AI is a no-code platform for extracting structured data from websites, monitoring pages for changes, and turning any site into an API endpoint. Users train "robots" by recording actions on a page, then scale extraction across thousands of URLs with built-in bot evasion, automatic retries, and workflow automation. It targets business teams and developers who need reliable web data without maintaining custom scraper infrastructure.

Build AI

BuildAI is a no-code platform that turns plain-language descriptions into deployed AI-powered web applications in minutes. It handles databases, authentication, deployment, and custom domains automatically, so founders and operators can ship internal tools or customer-facing AI products without engineers. The platform also supports "Digital Employees"—AI agents with memory, connectors, and scheduled workflows across Gmail, Slack, Notion, and 25+ services.

Caktus

Caktus AI is an all-in-one academic platform built for students, offering 40+ specialized tools for essays, STEM problem-solving, research, and study prep. Its proprietary Eguana model (developed with Multimodal) is fine-tuned on academic data for citation-aware writing, step-by-step math solutions, and subject-specific assistants. The platform positions itself as a learning aid rather than a generic chatbot, with tools for flashcards, humanizing AI text, and interview prep.

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Chadview

Chadview is a Chrome extension that provides real-time AI-generated answers during live video interviews on Zoom, Google Meet, and Microsoft Teams. Powered by the ChatGPT API, it listens to the last 30 seconds of conversation when you press "Ask," identifies the interviewer's question, and delivers a response in 3–4 seconds. It supports role-specific prompts for developers, data engineers, analysts, and other technical positions across six languages.

ChatGPT

ChatGPT is OpenAI's flagship conversational AI, available on web, mobile, and desktop. It handles writing, coding, research, image generation, voice chat, and agentic tasks through a single interface. Paid tiers unlock frontier models, higher usage limits, Codex coding agents, Deep Research, Sora video, and team admin controls. It remains the default general-purpose AI assistant for most consumers and many businesses.

Cursor Ai

Cursor AI is an AI-first, proprietary code editor built directly as a full fork of Microsoft's open-source Visual Studio Code (VS Code), meaning it natively retains all your favorite VS Code shortcuts, settings, and extensions while completely re-engineering the environment around artificial intelligence.

DeepSeek

DeepSeek is a Chinese AI lab whose current flagship models, DeepSeek-V4-Flash and DeepSeek-V4-Pro, compete with GPT-5 and Claude-class models on coding, reasoning, and general tasks at a fraction of the API cost. The free chat interface at chat.deepseek.com offers both models (Flash as "Instant Mode," Pro as "Expert Mode"), while the API provides OpenAI- and Anthropic-compatible endpoints for developers. Both models are open-weight under an MIT license and available for self-hosting via Hugging Face.

Floot

Floot is an AI-powered no-code application development platform that enables entrepreneurs, startups, and non-technical users to build, deploy, and scale production ready web applications using natural language prompts. Unlike many AI coding tools, Floot includes the entire technology stack frontend, backend, database, authentication, hosting, and deployment within a single platform, eliminating the need for external developer tools.

Github Copilot

GitHub Copilot is GitHub's AI pair programmer that provides code completions, chat, agents, code review, and CLI assistance inside IDEs and GitHub.com. As of June 2026 it uses GitHub AI Credits for usage-based billing across chat, agent mode, cloud agents, and code review. It supports multiple models including Claude, GPT, and Gemini variants depending on plan.

Google Antigravity Ai

Google Antigravity is Google's agent-first development platform combining an AI-powered IDE, a standalone agent command center (Antigravity 2.0), CLI, and SDK. It supports autonomous agents that plan and execute multi-step software tasks with browser control, subagents, scheduled tasks, and artifacts. Built on Gemini models with optional Claude and GPT model access.

Google Stich AI

Google Labs experiment launched May 2025, uses Gemini 2.5 Pro to generate UI designs and frontend code from text or image inputs in minutes. Now evolved into AI-native software design canvas with unlimited canvas, design agent, voice capabilities, and interactive prototypes

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Grok

Grok is a real-time, live-data AI assistant built into X that is best for news junkies, crypto traders, and creators who need up-to-the-second global trends, unfiltered image generation, and native slide-deck creation.

Hercules

Hercules is a no-code AI app builder for business software: describe what you want in chat, such as "build a CRM for my 75-person sales team," and Hercules builds a working application in real time, with auth, hosting, backend, database, payments, email, and API integrations built in rather than requiring separate setup. Finished apps can publish to a custom domain or to the iOS App Store and Google Play instantly. This is a different product from TestZeus's open-source "Hercules" testing agent (github.com/test-zeus-ai/testzeus-hercules), same name, unrelated companies.

Kimi Ai

Kimi is Moonshot AI's conversational assistant and agent platform, known for long-context reasoning, multi-step agent workflows, and the Kimi K3 flagship model launched July 2026. It offers chat, Agent Swarm, Kimi Claw browser automation, and Kimi Code for developers—all distinct from the Moonshot API used by third-party apps.

Lovable

Online AI website creator, builds websites from scratch using prompts, no code required

Manus AI

General-purpose autonomous AI agent that executes multi-step tasks including research, code writing, data analysis, website building, and slide creation. Runs on Manus 1.6 model family with browser, code, and file tools.

Meku AI

AI-powered full-stack web app and site builder that converts natural language prompts into production-ready React and Tailwind CSS code. Supports chat-based refinement, one-click deploy, and GitHub/Supabase integrations.

Murf AI

AI voiceover and text-to-speech platform with 200+ voices across 20+ languages. Studio for content creation plus separate Falcon API for developers needing low-latency TTS.

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Notebook Ml

Google's AI research assistant that helps you understand, organize, and learn from your documents. Upload PDFs, text files, Google Docs, YouTube videos, and websites to create AI-powered summaries, flashcards, overviews, and audio conversations.

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Nova AI

Cross-platform AI chatbot and personal assistant aggregating multiple AI models, available on web, iOS, Android, macOS, and Apple Watch for writing, homework help, proofreading, and general Q&A.

OpenAI Codex

OpenAI Codex is the company's agentic coding product — not the deprecated 2021 code-completion API, but a modern cloud and local coding agent included with ChatGPT paid plans. It ships as the Codex app (macOS/Windows), CLI, IDE extensions, and cloud sandbox tasks on connected GitHub repos. Users queue multi-step engineering work and review results asynchronously.

Prism

Prism (Prism Videos) is an all-in-one AI media platform for generating and editing images, videos, and audio. It aggregates leading models (Kling, Veo, Sora, Flux, GPT Image, Seedance) in one workspace with timeline editing, lip sync, upscaling, and an AI assistant. Note: many unrelated products share the name Prism; this entry matches the AI video/image SaaS at prismvideos.com, not OpenAI Prism (prism.openai.com, LaTeX research editor) or enterprise tools like Impact Prism.

Quillbot

QuillBot is an AI writing platform offering paraphrasing, grammar checking, plagiarism detection, AI detection, humanization, summarization, and citation tools. Used by 35M+ writers, it spans students, professionals, and content creators through browser extensions and desktop/mobile apps.

Qwen AI

Qwen is Alibaba's flagship AI model family and consumer platform. Qwen Studio offers a free AI assistant for chat, image generation, video generation, deep research, web dev, and thinking modes. Developers access models via Qwen Cloud API with token-based billing.

Replit

Replit is a cloud-based development environment with Replit Agent for autonomous AI coding. Valued at $3B, it lets users build, deploy, and collaborate on apps entirely in the browser with effort-based AI billing introduced in February 2026.

ResuFlex AI

ResuFlex is an AI-powered resume builder and job search platform with Magic Enhance tailoring, ATS scoring, cover letter generation, and a Kanban-style application tracker. Also available as an iOS app (PDF Resume Builder - ResuFlex) with local PDF rendering and iCloud sync.

Rewind Ai

Rewind AI is an AI-powered personal memory assistant that records and indexes everything you see, hear, and say on your computer. It helps users search past meetings, conversations, browser history, and documents instantly using AI. It acts like a “search engine for your life.”

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Uncody

Uncody builds websites for small businesses using AI. You describe your business and it generates a complete, mobile-friendly site in about ten minutes. It handles copywriting, picks images, adds SEO basics, and includes lead capture forms. Over a million sites have been created, according to the company.

Vizcom

Vizcom is an AI-powered design platform specifically built for industrial designers that transforms hand-drawn sketches into photorealistic renders in seconds. Founded by Jordan Taylor (former industrial designer at Honda and NVIDIA), the platform has gained traction with 700,000+ designers and 150+ companies, including Fortune 500 brands like Ford, New Balance, and Dell. Unlike generic text-to-image models, Vizcom preserves original proportions and geometry while generating production-ready visuals.

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Voicemod

Voicemod is a real-time voice changer and soundboard application for PC and Mac that uses AI to alter voices and play sounds during online chats. The platform offers 200+ preset voices, a VoiceLab for custom voice creation, and an integrated soundboard with hundreds of thousands of clips. Popular among gamers, streamers, and VTubers, Voicemod integrates with Discord, Zoom, OBS, popular games, and consoles via the Voicemod Key hardware.

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WhatTheDiff

WhatTheDiff is an AI-powered code review assistant that automatically generates pull request descriptions, provides inline code refactoring suggestions, and sends summarised notifications to keep both technical and non-technical stakeholders informed about code changes. The tool integrates with GitHub and GitLab, translating technical changes into plain language for wider team communication.

Windsurf

Windsurf is an AI-powered code editor (a VS Code fork) developed by Codeium. Its headline feature is Cascade, an AI agent that handles multi-file editing, planning, code generation, and terminal command execution. Positioned as a lower-cost alternative to Cursor, Windsurf offers unlimited autocomplete on the free tier and a flat $20/month Pro plan (vs. Cursor's variable pricing that can reach $35–60/month for heavy users).