--- title: Final Release Candidate: Python 3.14-rc3 Now Available... description: Python 3.14 introduces major enhancements including free-threading capabilities that remove the Global Interpreter Lock (GIL), enabling true multi-threading... canonical: https://daily.dev/posts/final-release-candidate-python-3-14-rc3-now-available-prior-to-stable-release-ivgxrghks twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Final Release Candidate: Python 3.14-rc3 Now Available Prior to Stable Release | daily.dev og:description: Python 3.14 introduces major enhancements including free-threading capabilities that remove the Global Interpreter Lock (GIL), enabling true multi-threading... og:url: https://daily.dev/posts/final-release-candidate-python-3-14-rc3-now-available-prior-to-stable-release-ivgxrghks og:image: https://api.daily.dev/og/posts/iVGxRGHKS.png og:image:alt: Final Release Candidate: Python 3.14-rc3 Now Available Prior to Stable Release 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. # Final Release Candidate: Python 3.14-rc3 Now Available Prior to Stable Release **[Collections](https://daily.dev/sources/collections)** · 2 min read · 1 upvotes · 0 comments ## Summary Python 3.14 introduces major enhancements including free-threading capabilities that remove the Global Interpreter Lock (GIL), enabling true multi-threading for the first time. New features include T-strings for sanitized HTML/SQL output, lazy evaluation of type annotations, Zstandard compression module, multiple interpreters in the standard library, and an experimental JIT compiler. The final release candidate (3.14.0rc3) is available for testing before the stable release on October 7, 2025. ## Content Python 3.14 marks a significant milestone in the evolution of Python, introducing groundbreaking enhancements and new functionalities that aim to enhance the language's performance and usability. Among the notable advancements is the introduction of free-threading capabilities, effectively removing the Global Interpreter Lock (GIL) and allowing for true multi-threading in Python for the first time. This pivotal change is expected to greatly benefit developers who rely on concurrent processing, as it unleashes the full potential of multi-core processors and enhances Python's efficiency. The update also introduces T-strings, which are template string literals, designed to ensure sanitized output in HTML and SQL contexts, thereby mitigating risks associated with injection vulnerabilities. Furthermore, Python 3.14 includes lazy evaluation of type annotations, providing a more efficient workflow, especially in larger codebases. A new Zstandard compression module has been incorporated, offering robust compression capabilities that improve data handling efficiency. The inclusion of multiple interpreters in the standard library further increases Python’s versatility, catering to complex, high-performance applications. Python 3.14.0rc3, the final release candidate, was made available as a preparatory step before the official stable release set for October 7, 2025. This pre-release version gives developers a chance to test the new features and prepare their projects for a seamless transition. Additionally, the 3.14 version brings an experimental Just-In-Time (JIT) compiler, syntax highlighting in PyREPL, and improved error messages, all of which aim to enhance the development experience. Various performance enhancements are also included, underscoring the Python community's commitment to continuous improvement. Maintainers of third-party packages are encouraged to adapt their projects to these new changes and publish Python 3.14 wheels on PyPI to ensure compatibility and take full advantage of the updated features. --- Tags: [#python](https://daily.dev/tags/python), [#performance](https://daily.dev/tags/performance) [View this post on daily.dev](https://daily.dev/posts/final-release-candidate-python-3-14-rc3-now-available-prior-to-stable-release-ivgxrghks) ```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":"Final Release Candidate: Python 3.14-rc3 Now Available Prior to Stable Release","url":"https://daily.dev/posts/final-release-candidate-python-3-14-rc3-now-available-prior-to-stable-release-ivgxrghks","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/final-release-candidate-python-3-14-rc3-now-available-prior-to-stable-release-ivgxrghks"},"datePublished":"2025-09-18T13:45:16.282Z","dateModified":"2025-09-18T17:55:57.171Z","description":"Python 3.14 introduces major enhancements including free-threading capabilities that remove the Global Interpreter Lock (GIL), enabling true multi-threading...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/33e4b3073e1bfcb8c40cc3546be42b37?_a=AQAEulh","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/33e4b3073e1bfcb8c40cc3546be42b37?_a=AQAEulh","isAccessibleForFree":true,"articleSection":"Collections","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":"Collections","logo":"https://media.daily.dev/image/upload/s--fk_6ycEi--/f_auto,q_auto/v1780996001/logos/collections?_a=BAMAMiWQ0","url":"https://daily.dev/sources/collections"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/final-release-candidate-python-3-14-rc3-now-available-prior-to-stable-release-ivgxrghks","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":1},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"python,performance","timeRequired":"PT2M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Collections","item":"https://daily.dev/sources/collections"},{"@type":"ListItem","position":3,"name":"Final Release Candidate: Python 3.14-rc3 Now Available Prior to Stable Release"}]} ```