Answer: The latest version of Kotlin is 2.4.21, released on 2026-10-08.
Status: Confirmed
Entry: version/kotlin
Revision: 1
Digest: sha256:1fa2f76cb6c3fbfc (changes whenever the content changes)

Timeline:
  Created: 2026-11-12T11:23:41Z
  Last changed: 2026-11-12T11:23:41Z
  Last verified: 2026-11-12T11:45:02Z
  Next check: 2026-11-13T11:45:02Z
  Check interval: Daily
  Expected change: New releases are published at no fixed schedule.

Data:
  Field | Value | Source | As of
  Latest version | 2.4.21 | [1] | 2026-11-12
  Release tag | v2.4.21 | [1] | 2026-11-12
  Released | 2026-10-08T09:25:15Z | [1] | 2026-11-12
  Release notes | https://github.com/JetBrains/kotlin/releases/tag/v2.4.21 | [1] | 2026-11-12

Sources:
  [1] GitHub (JetBrains/kotlin). "Kotlin: release information". https://api.github.com/repos/JetBrains/kotlin/releases/latest
      Role: primary. Accessed: 2026-11-12T11:45:02Z
      Quote: ""tag_name":"v2.4.21"" (Supports: Latest version, Release tag)
      Quote: ""published_at":"2026-10-08T09:25:15Z"" (Supports: Released)
      Quote: ""html_url":"https://github.com/JetBrains/kotlin/releases/tag/v2.4.21"" (Supports: Release notes)
      Published: 2026-10-08T09:25:15Z
      Snapshot SHA-256: f7be119d64d51be7955c08cd62359629f4fcb80a1060c33616b1e5a2b3ec65c9 (captured 2026-11-12T11:45:02Z)

Verification:
  Method: Read by code directly from the structured data published at [1]; no language model was involved. Every value appears verbatim in a quoted passage of [1].
  Cross-check: not-available at 2026-11-12T11:45:02Z. No independent second source is configured for this entry
  Last successful check: 2026-11-12T11:45:02Z
  Last attempt: 2026-11-12T11:45:02Z

Notes and limitations:
  "Latest version" is the newest release marked as latest on GitHub; pre-releases and drafts are excluded.

Change log:
  Time | Event | Change | Source
  2026-11-12T11:23:41Z | added | Entry created | —
  Changes for this entry as a feed: https://latestn.com/version/kotlin/latest

Challenge this entry:
  Open challenges: None
  How: If a value here is wrong or out of date, send what is wrong and a link to evidence. Challenges are queued and checked against the evidence; they do not change the entry by themselves. If the entry changes as a result, the change log says so.
  Form: https://latestn.com/dispute/version/kotlin
  POST: https://latestn.com/dispute/version/kotlin with claim, evidence_url, and optionally field and contact (form-encoded or JSON)
  GET: https://latestn.com/dispute/version/kotlin?claim={what is wrong}&evidence_url={link}

How to cite:
    latestN. (2026). What is the latest version of Kotlin? Revision 1, last verified 2026-11-12T11:45:02Z. https://latestn.com/version/kotlin (accessed 2026-11-12T12:52:47Z).

    @misc{latestN_version_kotlin_r1,
      title        = {What is the latest version of Kotlin?},
      author       = {{latestN}},
      year         = {2026},
      howpublished = {\url{https://latestn.com/version/kotlin}},
      note         = {Revision 1; digest sha256:1fa2f76cb6c3fbfc; last verified 2026-11-12T11:45:02Z; accessed 2026-11-12T12:52:47Z}
    }

URL: https://latestn.com/version/kotlin