--- title: How Much Code Do Developers Really Let Agents Write? description: JetBrains' Developer Ecosystem Survey 2026, covering over 15,000 professional developers, found that on average 47% of code is now fully generated by AI... canonical: https://daily.dev/posts/how-much-code-do-developers-really-let-agents-write--oxbt40nkb twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: How Much Code Do Developers Really Let Agents Write? | daily.dev og:description: JetBrains' Developer Ecosystem Survey 2026, covering over 15,000 professional developers, found that on average 47% of code is now fully generated by AI... og:url: https://daily.dev/posts/how-much-code-do-developers-really-let-agents-write--oxbt40nkb og:image: https://api.daily.dev/og/posts/OXBT40nKb.png og:image:alt: How Much Code Do Developers Really Let Agents Write? og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # How Much Code Do Developers Really Let Agents Write? **[JetBrains](https://daily.dev/sources/jetbrains)** · 7 min read · 1 upvotes · 0 comments ## Summary JetBrains' Developer Ecosystem Survey 2026, covering over 15,000 professional developers, found that on average 47% of code is now fully generated by AI agents, 38% is written with AI assistance, and only 27% is written fully manually. One in five developers writes zero manual code, but only about 22% rely on agents for over 80% of their code. Senior developers adopt fully agentic workflows faster than juniors. Among tool users, 42% of Codex users and 32% of Claude Code users generate over 80% of their code with agents; Cursor users average 58% agent-generated code. Go, JavaScript, and TypeScript developers show the highest agentic adoption (54-55%), while C/C++ developers remain the least agentic (38% manual). East Asian developers (China, Japan, South Korea) lead adoption at 32-35% heavy agentic use, roughly double the rate in Europe and the UK. Three developer segments emerged: Agentic coders (~31%, 84% agent-generated), AI-assisted coders (~47%, 40% agent-generated), and Manual coders (~23%, ~10% agent-generated). ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What percentage of code do professional developers let AI agents write on average? On average, professional developers report that about 47% of their code is fully generated by AI agents, 38% is written with some AI assistance, and 27% is written fully manually. Over half of developers now write less than 20% of their code manually, and one in five writes zero code without AI help, though only about 22% rely on agents for over 80% of their code, based on a survey of over 15,000 professional developers conducted May-July 2026. _Track how agentic coding adoption compares across tools and teams on daily.dev._ ### Which AI coding tool users generate the most code with agents, Claude Code or Codex? Codex users generate more agent-written code than Claude Code users: about 42% of Codex users produce over 80% of their code via agents, compared to 32% of Claude Code users, and 37% of Codex users write no code without AI assistance at all. Cursor users average 58% agent-generated code, with 28% generating over 80% via agents. Claude Code has broader adoption (39% at work) but a less advanced-skewing user base than Codex. _Compare Claude Code, Codex, and Cursor adoption data before picking your coding agent on daily.dev._ ### Which programming languages have the highest rate of AI-agent-generated code? Go, JavaScript, and TypeScript developers report the highest shares of agent-generated code, averaging 54%-55%. Java and Python developers sit in the middle at 48%-51%, while C and C++ developers remain the least agentic, keeping 38% of their code manually written on average. _See how agentic coding adoption differs by language stack on daily.dev before adjusting your workflow._ ## Similar posts on daily.dev - [AI Coding Agents: Adoption Trends](https://daily.dev/posts/ai-coding-agents-adoption-trends-qx3t0tttk) · JetBrains · 1 upvotes · 0 comments - [Agents on a leash: Agentic AI remains mostly single-agent and monitored at work](https://daily.dev/posts/agents-on-a-leash-agentic-ai-remains-mostly-single-agent-and-monitored-at-work-f8ug4owkn) · Stack Overflow Blog · 1 upvotes · 0 comments - [83% of developers are vibe coding, but call for more governance and coordination to manage workloads, new research reveals](https://daily.dev/posts/83-of-developers-are-vibe-coding-but-call-for-more-governance-and-coordination-to-manage-workloads-8rkpqecv1) · SD Times · 0 upvotes · 0 comments - [The 80% Problem in Agentic Coding](https://daily.dev/posts/the-80-problem-in-agentic-coding-9nacygamm) · Elevate · 120 upvotes · 7 comments - [Why agents DO NOT write most of our code - a reality check](https://daily.dev/posts/why-agents-do-not-write-most-of-our-code---a-reality-check-h44n3mjhg) · DEV · 19 upvotes · 3 comments --- Tags: [#claude-code](https://daily.dev/tags/claude-code), [#openai-codex](https://daily.dev/tags/openai-codex) [View this post on daily.dev](https://daily.dev/posts/how-much-code-do-developers-really-let-agents-write--oxbt40nkb) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"How Much Code Do Developers Really Let Agents Write?","url":"https://daily.dev/posts/how-much-code-do-developers-really-let-agents-write--oxbt40nkb","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/how-much-code-do-developers-really-let-agents-write--oxbt40nkb"},"datePublished":"2026-08-26T18:30:58.585Z","dateModified":"2026-09-13T20:11:13.516Z","description":"JetBrains' Developer Ecosystem Survey 2026, covering over 15,000 professional developers, found that on average 47% of code is now fully generated by AI...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/e88aeeb7189aae44dd9113b9dc3a7b87?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/e88aeeb7189aae44dd9113b9dc3a7b87?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"JetBrains","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"JetBrains","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/53ecf0c676f34b3896ee109609d91efa","url":"https://daily.dev/sources/jetbrains"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/how-much-code-do-developers-really-let-agents-write--oxbt40nkb","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":1},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"claude-code,openai-codex","timeRequired":"PT7M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"JetBrains","item":"https://daily.dev/sources/jetbrains"},{"@type":"ListItem","position":3,"name":"How Much Code Do Developers Really Let Agents Write?"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/how-much-code-do-developers-really-let-agents-write--oxbt40nkb#faq","mainEntity":[{"@type":"Question","name":"What percentage of code do professional developers let AI agents write on average?","acceptedAnswer":{"@type":"Answer","text":"On average, professional developers report that about 47% of their code is fully generated by AI agents, 38% is written with some AI assistance, and 27% is written fully manually. 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