The Twilight of the IDE — Are Developers Walking Away from the IDE in the Age of AI Coding Agents?
The Twilight of the IDE — Are Developers Walking Away from the IDE in the Age of AI Coding Agents?
I cannot remember the last time I opened VS Code. The IntelliJ renewal emails arrive, and I ignore them. After Claude Code started handling everything in the terminal, the IDE quietly disappeared from my workflow. And it turns out I am not alone.
1. Is It Just Me?
Honestly, at first it felt uneasy. Developing without an IDE felt like driving without a seatbelt. Autocomplete, debugger, Git integration, refactoring tools — all of it lived inside the IDE, and walking away from it felt like a regression in productivity.
Then I started using Claude Code and things shifted. Reading code, modifying it, testing it, committing it — the whole loop ended inside a single terminal. No mouse-clicking through file trees, no ten tabs open at once. Say “refactor this function,” and it figures out the context, finds the relevant files, edits them, and runs the tests.
Reddit’s r/programming is full of posts like this:
“I haven’t opened VS Code in 3 weeks. Claude Code + tmux is my IDE now.”
“Cancelled my JetBrains subscription. Between Claude Code and vim, I don’t need it anymore.”
Hacker News carries the same kind of confessions. It’s not that people stopped using IDEs — they stopped finding a reason to use them. This isn’t simply a trend. The numbers back it up.
2. The Tectonic Shift in the IDE Market, in Numbers
Stack Overflow 2025 Developer Survey
The 2025 Stack Overflow developer survey makes the IDE market’s shift visible.
| Rank | Tool | Usage | Note |
|---|---|---|---|
| 1 | VS Code | 75.9% | Still dominant #1, but growth is stalling |
| 2 | Visual Studio | 28.3% | Center of the .NET ecosystem |
| 3 | IntelliJ IDEA | 27.5% | Workhorse of the JVM ecosystem |
| 4 | Notepad++ | 24.2% | Demand for light editors holds |
| 5 | Vim | 22.2% | Signal of a terminal return |
| 6 | Cursor | 17.9% | New entrant, #6 in its first year |
| 7 | Neovim | 16.1% | 38.3% combined with Vim |
| - | Claude Code | ~10% | Terminal-based AI coding |
Three things stand out.
First, Cursor’s arrival. A name that didn’t exist in 2024 jumped to #6 overnight. 17.9% in a first year is an unprecedented velocity in developer-tool history.
Second, the Vim/Neovim revival. Combined, the two reach 38.3% — a clear year-over-year rise. This is part of the larger “return to the terminal” current. As AI coding agents run in the terminal, developers naturally migrate toward terminal-centric workflows.
Third, VS Code’s plateau. 75.9% is still overwhelming, but growth has stopped. The market isn’t saturated — alternatives have appeared.
JetBrains DevEco 2025
JetBrains’ Developer Ecosystem Survey 2025 shows even sharper numbers.
- Cursor users: 17× increase — from about 135 in 2024 to over 2,300 in 2025
- 65% of developers use AI coding tools at least weekly — up sharply from 40% in 2023
- The share of AI-assisted code in the codebase continues to grow
What the numbers say is plain. AI coding tools have shifted from “nice to have” to “uncomfortable to live without.”
3. A Three-Way Race — Copilot, Cursor, Claude Code
Between 2025 and 2026, the AI coding-tools market consolidated into a three-giant configuration. The overall market is estimated at $4–5B, with these three companies holding over 70%.
GitHub Copilot — The Weight of the Incumbent
| Metric | Value |
|---|---|
| Users | 20M+ |
| Market share | ~42% |
| Parent | Microsoft (GitHub) |
| Integrations | VS Code, JetBrains, Neovim, others |
Since its 2021 debut, Copilot has been synonymous with AI coding. Native VS Code integration, the weight of the Microsoft/GitHub ecosystem, and a base of 20 million users remain formidable. But growth began to slow from 2025. Functionally, it is transitioning from autocomplete-centric to agentic coding, but compared with the newer entrants, the perceived innovation has been thinner.
Cursor — The Fastest SaaS Growth in History
| Metric | Value |
|---|---|
| ARR | $2B (2025) |
| Valuation | $29.3B |
| Time to $100M ARR | 16 months from launch |
| Foundation | VS Code fork |
Cursor’s growth curve is unprecedented in SaaS history. It hit 2B ARR less than a year later. Forking VS Code and embedding AI at the core paid off. Developers kept the familiar VS Code interface and got AI as a “core experience” rather than an “add-on.”
In 2026 Cursor shipped Cursor 2.0, developing in-house models and transitioning to usage-based pricing. An evolution from “editor company” to “AI coding platform company.”
Claude Code — A New Paradigm Called the Terminal
| Metric | Value |
|---|---|
| ARR | $2.5B (Anthropic’s AI coding revenue) |
| Developer satisfaction | 46% (#1) |
| Interface | Terminal (CLI) |
| Trait | Editor-agnostic |
What makes Claude Code the most interesting of the three is that it doesn’t replace the IDE — it makes the IDE unnecessary. While Copilot moves inside the IDE and Cursor reinvents the IDE itself, Claude Code operates outside the IDE.
Topping the developer-satisfaction survey at 46% is telling. User counts trail Copilot by a wide margin, but actual user satisfaction is highest. That means Claude Code offers a qualitatively different experience.
Talking to code in natural language from the terminal is a fundamentally different paradigm from getting tab completions in an IDE. Developers used to “write” code. Now they “communicate” intent.
4. “The IDE Is Dead” vs “The IDE Is Changing”
Alongside the rise of AI coding agents, debate about the future of dev tools has run hot. The two poles are pulling hard.
”Traditional IDEs Will Be Gone by 2026”
Steve Yegge, the legendary Google engineer, dropped a shock prediction on his blog in late 2025.
“Traditional IDEs will be irrelevant by end of 2026. The agent is the IDE.”
His logic: the IDE’s core value — autocomplete, refactoring, debugging, navigation — is the very stuff AI agents do better. Understanding code “structurally” to perform AST-based refactoring is weaker than understanding code “intentionally” to perform whole-design redesigns. The features of the IDE, on this view, are merely a subset of the AI agent’s capabilities.
”The Visual Interface to Code Isn’t Going Anywhere”
On the other pole stands Nathan Sobo, creator of the Zed editor.
“Agents are powerful, but developers will always need to see, navigate, and understand code visually. The visual interface isn’t going away — it’s being augmented.”
Visual exploration of code, diff comparisons, the spatial grasp of architecture — these can’t be replaced by the text stream of a terminal. The IDE is not dying; it is evolving into a new role as an orchestrator of AI agents.
The Uncomfortable Truth — The Gap Between Perception and Reality
A study complicates the debate. The AI safety research organization METR (Model Evaluation & Threat Research) published an experiment in 2025.
Perceived speed: 20% faster. Actual speed: 19% slower.
In a randomized controlled trial with 16 experienced open-source developers, the group using AI coding tools (Cursor Pro + Claude 3.5 Sonnet) was in fact 19% slower than the group that did not. Yet participants believed they were 20% faster.
METR called this the “Efficiency Illusion.” Reviewing and correcting AI-generated code took longer than writing it directly.
There’s also a code-quality problem. According to GitClear’s 2025 report:
- 41–46% of all code is AI-generated
- AI-generated code produces 1.7× more issues than human code
- Security defect rate: 24.7% of AI code contains security vulnerabilities
These numbers pour cold water on the claim that “AI alone is enough; no IDE required.” Yes, AI coding agents are powerful — but the need for tooling that validates and helps you understand the generated code is rising at the same time.
5. IDE Vendors’ Response Strategies
How are traditional IDE vendors responding? Each company’s strategy is surprisingly different.
JetBrains — “We Will Build the Agent”
JetBrains’ response was the most dramatic.
It killed Fleet, the next-gen editor it had ambitiously launched in 2024. Fleet was the lightweight editor built to compete with VS Code, but the arrival of AI coding agents made the original strategy meaningless. JetBrains pivoted entirely.
- Junie: JetBrains’ AI agent. Integrated into existing IDEs like IntelliJ and WebStorm to perform coding tasks autonomously.
- JetBrains Air: an agentic development environment announced in early 2026. A paradigm shift: “the agent uses the IDE, not the IDE assisting the agent.”
- Free AI tier: base access to AI features is now free, defending against migration to paid AI coding tools.
The message is plain. “Even in the agent era, the IDE is needed. But it must evolve into an IDE for agents.”
Microsoft — Defending with Ecosystem Power
Microsoft runs a two-pronged play.
Offense: open-sourcing Copilot Chat and introducing multi-agent support in VS Code 1.109. Multiple AI agents working concurrently inside a single editor.
Defense: restricting extension licensing in the VS Code Marketplace, so VS Code forks like Cursor can’t use the official extensions. The ecosystem weaponized. It targeted Cursor’s dependency on the VS Code extension ecosystem precisely.
The move drew controversy. Open-source communities criticized “Microsoft betraying the spirit of open source,” but as business, the check landed.
Cursor — From Editor to Platform
Cursor is taking the most aggressive route.
- Cursor 2.0: developing its own AI models to reduce dependence on external models
- Usage-based pricing: shifting from monthly subscription to usage-based pricing, to accommodate both heavy and light users
- Background Agent: an experimental feature that lets AI perform work in the background without the IDE open — ironically, a feature that could make the IDE itself unnecessary
Windsurf — Exit via Acquisition
Windsurf, the AI coding editor from Codeium, took a different path. It was acquired by Cognition AI (maker of the autonomous coding agent Devin) for $250M. A judgment that competing as an independent AI editor was untenable. The deal sent a strong signal to the market. The age of the independent AI editor is over; the age of integration into giant AI platforms has begun.
The Common Thread: From “Text Editor” to “Agent Orchestration Platform”
There is one direction common to every strategy. The IDE is no longer “a tool for writing code.” It is becoming a stage on which AI agents collaborate — an “agent orchestration platform.” Agents do the writing; the IDE manages those agents and visualizes the results.
6. The Developer’s Choices — And the Future
The Era of Tool Fragmentation
A curious thing is happening. Rather than picking one tool, developers now commonly use two or three at once. Generate code with Claude Code, inspect the diff in VS Code, refactor in Cursor — that kind of stack. The era of “best tool” is yielding to the era of “best combination.”
Vibe Coding — Democratization of Coding, or a Tech-Debt Bomb?
The Collins Dictionary’s 2025 Word of the Year, “Vibe Coding” — a development approach where you only convey intent in natural language and AI generates the code — has formed a $4.7B market. An era in which non-developers can build software.
But whether this is “democratization of coding” or “democratization of technical debt” is still an open question. The fact that 24.7% of AI-generated code contains security defects hints at the size of the risk vibe coding can bring.
# The reality of Vibe Coding
Developer: "Build a user authentication feature"
AI: (generates 200 lines of code)
Developer: "It works! Let's ship it!"
# Three months later
Security team: "We've found an SQL injection vulnerability"
Developer: "...I didn't write that code"The IDE Won’t Die. But the IDE We Knew Is Already Disappearing
Let’s land the conclusion.
The IDE is unlikely to vanish completely. Visual code exploration, complex debugging, grasping the architecture of large-scale projects — for these tasks, the value of a visual interface remains.
But the IDE’s identity is shifting fundamentally. Ten years ago the IDE was “a tool for writing code.” Five years ago, “a tool for writing code with autocomplete.” Today it is becoming “a tool for verifying and visualizing code written by AI agents.”
And developers like me — those who write, review, test, and commit code through Claude Code alone — are growing in number. We haven’t “left” the IDE. We’re receiving the value the IDE used to provide in a different form.
A single terminal window, and an AI you can talk to. That is the IDE of 2026.
References
- Stack Overflow Developer Survey 2025
- JetBrains Developer Ecosystem Survey 2025
- METR, “Measuring the Impact of AI Coding Tools on Developer Productivity” (2025)
- GitClear, “AI Code Quality Report 2025”
- Steve Yegge, “The Death of the IDE” (2025)
- The New Stack, “The Rise of Agentic CLI Tools” (2025)
- Collins Dictionary, Word of the Year 2025: “Vibe Coding”