The debate about whether AI coding tools are mainstream is over. JetBrains ran its second AI Pulse survey in January 2026 — a globally representative study of over 10,000 professional developers, localized into eight languages — and the headline number is definitive: 90% of developers regularly use at least one AI tool at work for coding and development tasks. Not experimenting. Not dabbling. Using, daily, at their jobs.
Beyond raw adoption, 74% have moved past general-purpose chatbots like ChatGPT and adopted specialized AI developer tools — purpose-built coding assistants, editors, and agents designed for software engineering workflows.
The Market Map: Who's Winning
GitHub Copilot remains the most widely known and adopted AI coding tool. 76% of developers have heard of it, and 29% use it at work. But growth has stalled — both awareness and adoption are flat compared to prior survey waves. Copilot's strongest position is in large enterprises with 5,000+ employees, where 40% adoption reflects the power of organizational procurement.
Cursor is the second most well-known tool at 69% awareness, but its growth has also decelerated. Adoption at work sits at 18%, now tied with Claude Code.
Claude Code is the story. 57% awareness (up from 31% in April-June 2025), 18% adoption at work — a 6x increase from roughly 3% nine months earlier. In the US and Canada, adoption reached 24%. It also holds the highest product loyalty metrics on the market: 91% CSAT satisfaction and an NPS of 54. JetBrains frames it bluntly: "The shift toward best-of-breed agents demonstrates that product excellence now outweighs ecosystem lock-in."
OpenAI Codex had just 27% awareness and 3% work adoption as of January 2026, though those numbers predate the Codex desktop app launch. Google Antigravity, launched in November, reached 6% adoption within two months. ChatGPT's chatbot interface remains the most popular AI for general coding tasks at 28%.
What the Numbers Actually Mean
Three structural patterns emerge from the data:
Growth is diverging. Copilot and Cursor are plateauing. Claude Code is accelerating. If current trajectories hold, Claude Code will pass Copilot in individual developer adoption by end of year. The market is separating into tools developers choose versus tools their companies choose for them.
Terminal-native is winning the satisfaction war. Claude Code's 91% CSAT and 54 NPS are the highest in the category. The tools developers love most are the ones that meet them where they already work — the terminal — rather than requiring a new IDE or interface.
Seniority correlates with agent adoption. Staff+ engineers are the most aggressive adopters of agentic workflows. Junior developers lean toward autocomplete and chat. The most experienced developers are delegating the most work to AI — not less.
The Enterprise Gap
There's a clear split between how individuals choose tools and how organizations procure them. Copilot's 40% adoption in large companies versus Claude Code's enterprise penetration shows that organizational inertia still matters — but it's being eroded. Developers are increasingly bringing their preferred tools to work regardless of what IT has approved.
JetBrains' own response to the data has been to go fully open: JetBrains Central, Air, and Junie CLI all support Bring Your Own Key across providers. The message from the survey is that developers will not accept vendor lock-in when a better tool exists.
What Comes Next
JetBrains is launching the Developer Ecosystem Survey 2026 this month, which will dig deeper into agent adoption challenges at the organizational level. The AI Pulse data makes one thing clear: the question is no longer whether developers use AI at work. It's which agents, how many, and who gets to choose.