Leanstral 1.5

Leanstral 1.5

Mistral AI
+
+

Related Products

  • TrustInSoft Analyzer
    6 Ratings
    Visit Website
  • Gemini Enterprise Agent Platform
    983 Ratings
    Visit Website
  • dbt
    263 Ratings
    Visit Website
  • Member365
    48 Ratings
    Visit Website
  • JetBrains Junie
    12 Ratings
    Visit Website
  • Detrack
    148 Ratings
    Visit Website
  • CampaignTrackly
    57 Ratings
    Visit Website
  • Google AI Studio
    30 Ratings
    Visit Website
  • LM-Kit.NET
    29 Ratings
    Visit Website
  • Yeastar P-Series PBX System
    116 Ratings
    Visit Website

About

Leanstral 1.5 is an Apache-2.0 licensed model for practical proof engineering in Lean 4, built to make formal verification more powerful and accessible. With 119B total parameters and only 6B active parameters, it delivers a major performance upgrade for theorem proving, agentic proof engineering, and real-world code verification. Leanstral 1.5 was trained through a three-stage process: mid-training, supervised fine-tuning, and reinforcement learning with CISPO. In the multiturn environment, the model receives a theorem statement, submits a proof, gets Lean compiler feedback, and refines its approach until the proof compiles or the budget is exhausted. In the code agent environment, Leanstral works like a developer in a raw filesystem: it edits files, runs bash commands, and uses the Lean language server to inspect goals, errors, and type information in real time.

About

Prolog is a logic programming language associated with artificial intelligence and computational linguistics. Prolog has its roots in first-order logic, a formal logic, and unlike many other programming languages, Prolog is intended primarily as a declarative programming language, the program logic is expressed in terms of relations, represented as facts and rules. A computation is initiated by running a query over these relations. Prolog was one of the first logic programming languages and remains the most popular such language today, with several free and commercial implementations available. The language has been used for theorem proving, expert systems, term rewriting, type systems, and automated planning, as well as its original intended field of use, natural language processing. Modern Prolog environments support the creation of graphical user interfaces, as well as administrative and networked applications.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Formal methods engineers and Lean 4 researchers who need an open model for theorem proving, proof debugging, and real-world code verification

Audience

Anyone in need of a declarative language for theorem proving, expert systems, term rewriting, and more

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

Free
Free Version
Free Trial

Pricing

No information available.
Free Version
Free Trial

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

Mistral AI
Founded: 2023
France
mistral.ai/news/leanstral-1-5/

Company Information

Prolog
Founded: 1972
en.wikipedia.org/wiki/Prolog

Alternatives

Leanstral

Leanstral

Mistral AI

Alternatives

XAML

XAML

Microsoft
QML

QML

Qt
DeepSWE

DeepSWE

Agentica Project
SWE-1.5

SWE-1.5

Cognition
Command R+

Command R+

Cohere AI

Categories

Categories

Integrations

.NET
C
C#
C++
CodePal
DeepSeek Coder
Delphi
Devika
Devin
F#
GPT Pilot
Java
Lua
PHP
Python
SQL
SwapCode AI
Visual Basic
XML

Integrations

.NET
C
C#
C++
CodePal
DeepSeek Coder
Delphi
Devika
Devin
F#
GPT Pilot
Java
Lua
PHP
Python
SQL
SwapCode AI
Visual Basic
XML
Claim Leanstral 1.5 and update features and information
Claim Leanstral 1.5 and update features and information
Claim Prolog and update features and information
Claim Prolog and update features and information