AI pair programmer by GitHub/Microsoft with code completions, chat-based coding assistance, and a full coding agent. GPT-5.3-Codex now GA on github.com, GitHub Mobile, and Visual Studio (Feb 25). Claude Opus 4.6 available. Copilot CLI now GA with Plan Mode, Autopilot Mode, and parallel specialized agents.
Category: development | Pricing: Freemium — Free tier with limited monthly completions. Pro $10/month (unlimited completions, coding agent). Pro+ $39/month (all models). Business $19/user/month. Enterprise $39/user/month. Free for verified students, teachers, and OSS maintainers.
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