Suspecting that some people have access to Lfortran later than version 0.59.0 released Jan 14, 2026 (I think) I tried asking Duck.ai and was told The latest version of LFortran is 0.19.0, released on January 31, 2026. The problem is that according to Tags · lfortran/lfortran · GitHub, Lfortran 0.19.0 was actually released on April 29, 2023!
In Qwant, it is 0.36.1…
Asking IA agents about current events is not a good practice. They are based on pre-trained LLM with data collected at a given date. They can be useful concerning well established and stable knowledge.
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I tried on g.ai: The latest stable version of LFortran is v0.45.0, released on**December 24, 2024
**
ChatGPT:
According to available information from the official LFortran project:
- The latest released version of LFortran is 0.49.0. (Wikipedia)
- That version 0.49.0 was released on March 15, 2025. (Wikipedia)
LFortran is an open-source alpha-stage Fortran compiler built on LLVM and designed to allow interactive execution as well as traditional compiling. The project continues active development with periodic new releases on its GitHub repository. (Wikipedia)
If you need links to the release page or installation details, I can provide those too!
Claude:
I’ll search for the latest LFortran version information for you.Let me search for more recent release information from GitHub.Based on the GitHub releases page, the latest LFortran version is v0.59.0, which was released on January 14, 2025.
Grok:
The latest version of LFortran is v0.59.0.
It was released on January 14, 2026.
This is based on the official GitHub releases page for the project ( Releases · lfortran/lfortran · GitHub ), where v0.59.0 is marked as the most recent. The release includes various bug fixes (e.g., related to struct constants, formatted I/O, case statements with multiple arguments), enhancements (e.g., support for strided access in print, selected_logical_kind intrinsic, array deallocation in LLVM backend), and improvements to CI, WASM builds, and documentation. Prior versions include v0.58.0 and v0.57.0 (from September 2025), confirming this as current. For full details, check the release notes there.
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Every model did web-search, the culprit are not models but outdated information on sources like Wikipedia.
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Indeed, in Wikipedia we can read in the right frame:
Stable release 0.49.0 (alpha) / March 15, 2025
Which is moreover a contradiction, as an alpha version is not a stable release…
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I recommend finding an AI that you find being factual about recent events and then use that. (I’ve been using Grok in Expert mode and found it to be factual, so I just use that, but I think any AI that searches the web and then assembles the answer should be factual.)
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With Le Chat from Mistral AI (France):
What is the latest version of the LFortran compiler today?
As of February 3, 2026, the latest version of the LFortran compiler is 0.59.0, released on January 14, 2026 fortran-lang.discourse.group.
Interestingly, the cited source is a Fortran Discourse link to the present thread…
Note that “Le Chat” means “The Cat” in French. So it’s a pun with the English word.
Well, it’s not perfect as for gtk-fortran it finds the 4.4.0, citing again a thread on the Discourse, but the latest version is 4.9.0… But asking again after logging in my (free) account, it finds the 4.9.0, citing the GitHub repository.
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Haha. I think the term for that is an Ouroboros.
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