Code4MeV2: a Research-oriented Code-completion Platform
Authors: name: Roham Koohestani, name: Parham Bateni, name: Aydin Ebrahimi, name: Behdad Etezadi, name: Kiarash Karimi, name: Maliheh Izadi
Organization: AISE research lab at TU Delft

The adoption of AI-powered code completion tools in software development has
increased substantially, yet the user interaction data produced by these
systems remain proprietary within large corporations. This creates a barrier
for the academic community, as researchers must often develop dedicated
platforms to conduct studies on human--AI interaction, making reproducible
research and large-scale data analysis impractical. In this work, we introduce
Code4MeV2, a research-oriented, open-source code completion plugin for
JetBrains IDEs, as a solution to this limitation. Code4MeV2 is designed using a
client--server architecture and features inline code completion and a
context-aware chat assistant. Its core contribution is a modular and
transparent data collection framework that gives researchers fine-grained
control over telemetry and context gathering. Code4MeV2 achieves
industry-comparable performance in terms of code completion, with an average
latency of 200~ms. We assess our tool through a combination of an expert
evaluation and a user study with eight participants. Feedback from both
researchers and daily users highlights its informativeness and usefulness. We
invite the community to adopt and contribute to this tool. More information
about the tool can be found at https://app.code4me.me.