Glossary · Definition
Agentic coding
Agentic coding is when an AI agent autonomously plans, edits, runs, tests, and iterates on code with tool access — file edits, shell, search, builds. Different from autocomplete (single-line) or chat (one Q at a time).
Definition
Agentic coding is when an AI agent autonomously plans, edits, runs, tests, and iterates on code with tool access — file edits, shell, search, builds. Different from autocomplete (single-line) or chat (one Q at a time).
What it means
The 2024-2026 shift in how developers use AI. Tools: Claude Code, Cursor Background Agents, Aider, Devin, Replit Agent. Pattern: describe a task ('refactor X', 'add feature Y, write tests'), the agent plans, makes changes across multiple files, runs tests, fixes errors, iterates until done. SWE-bench Verified is the canonical benchmark — Claude Opus 4.7 leads at ~78% in 2026; GPT-5 ~72%.
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Why it matters
Agentic coding is the productivity multiplier of 2026 — devs report 30-60% time savings on appropriate tasks (refactors, migrations, tests, debugging). Not appropriate for all coding (small unfamiliar fix, complex architecture decisions), but for the routine 50% of dev work, the gain is real.
Related free tools
Frequently asked questions
Best agent in 2026?
Claude Code (top SWE-bench, bundled with Pro/Max). Cursor's Background Agents close. Aider for multi-model + open source preference.
How do I start?
Pick a low-stakes task (write tests for existing function, refactor a file). Run an agent; review every change. Build trust over weeks before letting agents work on production paths.
Related terms
- DefinitionAI agentAn AI agent is an LLM running in a loop: think → call a tool → observe the result → think again. The loop continues until the task is done or a stopping condition is hit.
- DefinitionVibe codingVibe coding is writing software by describing intent in natural language and letting AI generate, run, and debug the code — barely looking at it yourself. Coined by Andrej Karpathy in early 2025.