Github Copilot vs Relay: Features, Pricing & Which Is Better (2026)
A side-by-side comparison of Github Copilot and Relay — features, pricing, and ideal use cases — to help you decide which AI tool fits your workflow.
Github Copilot
GitHub
An AI-powered coding assistant that suggests code, completes functions, and offers chat-driven coding help across editors and GitHub.
Key features
- Contextual Code Completion: Provides single-line, multi-line, and whole-function suggestions based on local file context, open repositories, and installed project files to speed coding and reduce boilerplate.
- Copilot Chat: An interactive chat interface embedded in supported IDEs, GitHub.com, GitHub Mobile, and the CLI that answers coding questions, explains code, and generates fixes or tests on request.
- IDE & Platform Integration: Native plugins and support for Visual Studio Code, Visual Studio, JetBrains IDEs, Eclipse, Xcode, Windows Terminal, GitHub CLI, and GitHub.com allowing seamless in-editor assistance and workflows.
- Copilot CLI & Agents: Command-line tools and coding agents (public preview) that let developers query Copilot for changes to local files, list/manage GitHub resources, and run agent-driven automation from the terminal.
- Code Review Suggestions: Automated AI-generated code review suggestions and recommendations to help identify issues, suggest improvements, and accelerate pull request review cycles.
- Governance & Safety Controls: Filters for off-topic/harmful output, scanning for vulnerable code, and options to detect or exclude suggestions that match public GitHub code along with organization-level policy controls.
- Copilot Extensions: A plugin model that allows third-party and custom integrations to extend Copilot Chat capabilities with external tools, services, and private knowledge sources.
- Multi-language & Framework Support: Strong support for popular languages (Python, JavaScript, TypeScript, Ruby, Go, C#, C++, etc.), database query generation, API scaffolding, and infrastructure-as-code patterns.
- Context-aware code completions (lines & functions)
- Copilot Chat for interactive coding help
- Coding agents for multi-step tasks
- Multiple model access and model selection (paid tiers)
- IDE, GitHub.com, Mobile and CLI integrations
- Admin controls, policy and user management for orgs
- Configurable data usage and training exclusions
- Inline code completions: whole lines or entire functions suggested in-editor.
- Copilot Chat: chat interface available in GitHub website, supported IDEs, GitHub Mobile, and Windows Terminal.
- Copilot CLI: terminal-based command line interface to query and modify local files and interact with GitHub.com (e.g., list PRs, create issues).
- Copilot Extensions: GitHub Apps that integrate external tools into Copilot Chat; can be published on GitHub Marketplace.
- Copilot Edits: contextual code edits driven by prompts or chat within IDEs.
- Copilot Code Review: AI-generated review suggestions to improve code quality.
- IDE support: Visual Studio Code, Visual Studio, JetBrains IDEs, Eclipse IDE, Xcode (and other supported editors).
- Platform integrations: native integration on GitHub.com, GitHub Mobile, Windows Terminal Canary, and GitHub CLI.
- Governance and controls: options to allow/deny suggestions matching public code, organization-level access (Enterprise), and filters for off-topic/harmful/vulnerable outputs.
Best for
- Accelerated Feature Implementation: Generate function bodies, boilerplate, and API client stubs from inline prompts to speed building new features across multiple languages and frameworks.
- Debugging and Bug Fixing: Use Copilot Chat to explain stack traces, suggest fixes, or propose test cases that reproduce and resolve defects within the developer's codebase.
- Test Generation and Coverage: Automatically create unit tests, integration test scaffolding, and example inputs/outputs to increase coverage and speed QA cycles.
- Code Review Assistance: Provide automated review suggestions on pull requests to surface potential bugs, security concerns, or opportunities to refactor and optimize.
- DevOps and Infrastructure as Code: Generate Terraform, Dockerfile, and CI configuration snippets, or translate deployment patterns into reproducible infrastructure code.
- Onboarding and Documentation: Help new developers understand code by summarizing functions, generating README snippets, and producing inline documentation or usage examples.
- CLI and Mobile Workflows: Interact with repositories and get coding assistance directly from the terminal or GitHub Mobile for quick edits, issue triage, or code exploration on the go.
- Speeding up feature development with suggested code snippets
- Debugging and explaining code via chat
- Automating repetitive coding tasks using agents
- Onboarding new developers with contextual suggestions
- Organization-wide policy-controlled AI assistance for teams
R
Relay
Relay
AI phone receptionist that builds itself from a business's website to answer every call and book, reschedule, or cancel appointments 24/7.
Key features
- One-Click Build: Paste a website and Relay drafts the agent profile, knowledge base, prompt, and call wiring in about 38 seconds.
- 24/7 Call Answering: Picks up every call day or night in the caller's local time, with no voicemail or hold music.
- Real Calendar Booking: Checks live availability and writes appointments, reschedules, and cancellations directly to the business's existing booking system.
- Booking Integrations: Connects to 7+ systems including Google Calendar, Square, Calendly, Outlook, Housecall Pro, Workiz, and Vagaro with one sign-in.
- Grounded Answers: Answers caller questions from the business's own facts and knowledge base rather than guessing.
- No-Config Setup: Requires no dashboards, prompt engineering, or manual call-flow building.
Best for
- Missed-Call Recovery: Capture bookings from calls that would otherwise ring out when staff are busy or closed.
- Appointment-Based Businesses: Let salons, clinics, and home-service providers automate booking, rescheduling, and cancellations by phone.