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MODELS

From code LLMs to specialized small models

A matrix of scenario models built for agent subtasks and for specific domain tasks.

8 YEARS · 7 GENERATIONS

The model is the product: eight years, seven generations.

  1. 2018
    aiXcoder 1.0 / 2.0

    China's first deep-learning-based intelligent software development product; the earliest to adopt the Transformer architecture, with personalized training.

  2. 2021
    aiXcoder L

    The world's first code LLM above one billion parameters.

  3. 2022
    aiXcoder XL

    13B parameters — China's first method-level code generation model.

  4. 2023
    Europa / Jupiter

    Unit-test generation, defect detection and repair; model scale to 35B.

  5. 2024
    Earth · aiXcoder-7B

    A 76B multi-scenario R&D platform; 7B reaches SOTA on completion, published at ICSE 2025.

  6. 2025
    Agentic AI

    Deep DeepSeek integration; 7B-v2 holds SOTA, with private deployment and personalization.

  7. 2026
    aiXapply-4B

    A specialized small model for agent subtasks: 94.4% accuracy, nearly matching a 397B frontier model. Open source.

RESEARCH

100+ top-venue papers, many of them pioneering work in intelligent software engineering

The aiXcoder team entered deep-learning-based program processing early, publishing some of the field's earliest academic work and contributing original results in program understanding, generation, code LLMs and agent methods.

aiXapply-4B

Code-change application model · Open source

Merges AI-generated snippets precisely back into source files: a 4B model rivaling hundred-billion-parameter models, 15× faster inference on a single consumer GPU, 30× lower task latency.

aiXcoder-7B

Code completion & generation model · Open source

SOTA code completion, published at ICSE 2025; 7B-v2 lifts API-invocation accuracy to 94.4%.

aiXcompact-4B

Context-compression model

Dynamically compresses agent history to prevent context overload; on single-GPU compute, post-training performance improves 2–3×.

aiXverilog-4B

Embedded-development small model

Distillation and reinforcement learning bake hardware-design knowledge deep into the weights, so a 4B small model matches general large models on complex Verilog tasks — lightweight and high-performance at once.

TALK TO US

Efficient, intelligent R&D built on your own codebase.

Needs assessment → POC on your enterprise codebase → private rollout, deployed on your own compute (domestic chips included).