The 3 Best AI Coding Assistants
We wrote the same six real-world features with each assistant — authentication, a payments flow, a data pipeline, tests, a refactor, and docs. The gap between best and worst was wider than we expected.
Cursor
“Composer mode is the first time AI assistance has felt like pairing with a senior engineer.”
The editor that thinks in diffs. Our reviewers logged repeat sessions with the Cursor across the full test protocol before scoring, and re-checked the result against the 11 other candidates in this category.
- +Composer agent
- +Multi-file edits
- +Fast indexing
- −Proprietary editor
- −Credits meter usage
- Editor
- VS Code fork
- Models
- Claude, GPT, Gemini
- Context
- Codebase + docs
- OS
- macOS, Windows, Linux
GitHub Copilot
“Workspace mode finally closes the gap with Cursor for most day-to-day tasks.”
The default, and getting close to the best. Our reviewers logged repeat sessions with the GitHub Copilot across the full test protocol before scoring, and re-checked the result against the 11 other candidates in this category.
- +Deep GitHub integration
- +Workspace context
- +Broad IDE support
- −Agent still conservative
- −Occasional hallucinated imports
- Editor
- VS Code, JetBrains, Neovim
- Models
- GPT-4o, Claude
- Context
- Repo, workspace
- OS
- All major
Claude Code
“For engineers comfortable in a shell, this is the most direct path from intent to shipped code.”
Terminal-native and surprisingly autonomous. Our reviewers logged repeat sessions with the Claude Code across the full test protocol before scoring, and re-checked the result against the 11 other candidates in this category.
- +CLI-first
- +Strong reasoning
- +Transparent tool calls
- −Requires terminal fluency
- −Token costs add up
- Interface
- Terminal
- Models
- Claude 4
- Context
- Repo, tools, files
- OS
- macOS, Linux, Windows
Every measurement, in one table.
| Specification | № 1 Cursor | № 2 GitHub Copilot | № 3 Claude Code |
|---|---|---|---|
| Score | 9.3 | 9.0 | 8.8 |
| Price | $20/mo | $19/mo | Usage-based |
| Editor | VS Code fork | VS Code, JetBrains, Neovim | — |
| Models | Claude, GPT, Gemini | GPT-4o, Claude | Claude 4 |
| Context | Codebase + docs | Repo, workspace | Repo, tools, files |
| OS | macOS, Windows, Linux | All major | macOS, Linux, Windows |
| Interface | — | — | Terminal |
| Verdict | The editor that thinks in diffs. | The default, and getting close to the best. | Terminal-native and surprisingly autonomous. |
11 candidates. Three survivors.
Samir Kapoor ran this category through the standard Top3 protocol. Raw measurements are logged publicly, and the ranking is re-verified every twelve months at minimum.
- 01Longlist
We begin with every serious contender in the category — typically 20 to 60 products.
- 02Screen
Objective filters (safety certifications, warranty minimums, return policies) cut the list to 12–15.
- 03Test
A structured protocol, run by at least two reviewers, with raw measurements logged to a public sheet.
- 04Live
Finalists live with an editor for a minimum of 14 days. First-week impressions are discarded.
- 05Rank
Scores are weighted by what users actually report caring about — based on annual reader surveys.
- 06Publish
Drafts are reviewed by an editor who did not test, and by a subject-matter expert outside the team.
- 07Revisit
Every ranking is re-verified at least annually. Lapsed rankings are marked or retired.
