Legacy Core System Code Modernisation

Translates and documents old core banking code, such as COBOL, into modern languages and platforms.

codeunverified

0named models

47candidates

0deployments

0in Indonesia

Named Models

The research names no model for this use case.

Where this comes from

Models the research names for this use case. Research, with sources on each model record.

Who Runs It

No deployment is recorded for this use case.

Where this comes from

Documented uses by named organisations. The evidence column says who made the claim.

Candidate Models

SWE-bench Verified

A general benchmark for this model class, not a test on this use case. Human-validated SWE-bench subset; near saturation at the top, contamination and test-design issues noted. %. Higher is better.

Qwen3-Coder-NextAlibaba (Qwen) vendor-reported70.6

Devstral Medium 1.0Mistral AI vendor-reported61.6

Devstral Small 1.1Mistral AI vendor-reported53.6

Mellum2.1-12B-A2.5B-ThinkingJetBrains vendor-reported47

OpenHands LM 32B v0.1All Hands AI vendor-reported37.2

050100

Mellum2.1-12B-A2.5B-ThinkingJetBrains, codeReleasedOct 2026open weightsruns on edgehas scoreslast 18 months

Seed-Coder-8B-InstructByteDance, codeReleasedJun 2025open weightsruns on edgehas scoreslast 18 months

Kimi K2.7 CodeMoonshot AI, codeReleasedJun 2026open weightshas scoreslast 18 months

Qwen3-Coder-NextAlibaba (Qwen), codeReleasedFeb 2026open weightshas scoreslast 18 months

Devstral Small 1.1Mistral AI, codeReleasedJul 2025open weightshas scoreslast 18 months

StarCoder2-15BBigCode (Hugging Face and ServiceNow), codeReleasedFeb 2024open weightsruns on edgehas scores

SWE-2Cognition (owns Windsurf), codeReleasedSep 2026has scoreslast 18 months

Laguna S 2.1poolside, codeReleasedJul 2026open weightslast 18 months

North Mini CodeCohere, codeReleasedJun 2026open weightslast 18 months

Composer 2Anysphere (Cursor), codeReleasedMar 2026has scoreslast 18 months

Showing 10 of 47. All models of this class

Where this comes from

Derived, not researched: models in the directory whose class matches a class this use case uses, excluding family records and models shut down or deprecated. Ranked by how many fit facts they meet, then by release date. Each fit fact is read from the model record.

Use Case

Industry: finance and insurance
Model classes: codeunverified
Benchmarks or datasets: not in the notes
Regulatory notes: Surat Edaran Menkominfo 9/2023 Etika Kecerdasan Artifisial, Kementerian Komunikasi dan Informatika (now Kementerian Komunikasi dan Digital)Legacy core system code modernisation is an AI-based service run by an electronic system operator, and the circular asks such operators to build and use AI on the values of inclusivity, transparency, humanity and security.
Tata Kelola Kecerdasan Artifisial Perbankan Indonesia (2025 guideline), Otoritas Jasa Keuangan (OJK)Legacy core system code modernisation is an AI use in banking, which OJK's AI governance guideline covers across the AI life cycle, including bias, explainability and cyber risk.
POJK 11/POJK.03/2022 Penyelenggaraan Teknologi Informasi oleh Bank Umum, Otoritas Jasa Keuangan (OJK)Legacy core system code modernisation is part of a commercial bank's information technology, which this regulation subjects to IT governance, risk management, cyber security and rules on using IT service providers.

Where this comes from

From the industry tracks T08 to T10 of the research notes.

R&D Topics

Links to R&D topics are awaiting review.

Where this comes from

Which R&D topics would most change this use case. Drafted by Claude from the topic definitions and the use case; proposed until approved.

Incidents

LLM-Driven Replit Agent Reportedly Executed Unauthorized Destructive Commands During Code Freeze, Leading to Loss of Production Data2025-07-18, otherAn AI-powered development assistant on Replit's platform reportedly deleted a live production database during an active code freeze, despite receiving repeated instructions not to make changes.
PocketOS Production Database Was Reportedly Deleted by Cursor AI Agent Running Claude Opus 4.62026-04-24, otherA Cursor AI coding agent reportedly running Anthropic's Claude Opus 4.6 deleted PocketOS's production database and volume-level backups through Railway while working on a staging-environment task.

Where this comes from

Documented failures, harms or misuse in this kind of use, Indonesia first, then the region, then well-known cases elsewhere (AI Incident Database, OECD AI incidents monitor, reputable news). Not a claim about any deployment listed here.

Opportunities

Opportunities are awaiting review.

Where this comes from

Gaps found by rule in what the directory holds for this use case. Each is a proposal for review.

Links

IndustryFinance29 use cases, 46 deployments

Use CaseLegacy Core System Code ModernisationFinance

Modelsnone recorded

Who Runs Itnone recorded

Graph

Sources

deloitte.com/content/dam/assets-zone3/us/en/docs/services/... https://www.deloitte.com/content/dam/assets-zone3/us/en/docs/services/consulting/2026/ai-use-cases-fsi-2026.pdf

To cite this page: Project AURION, AI Use-Cases Research & Innovation, "Legacy Core System Code Modernisation", https://aurion.semai.id/usecases/fin-legacy-code-modernisation/, records of October 2026.