---
library_name: transformers
license: apache-2.0
base_model: Qwen/Qwen3-4B-Instruct-2507
pipeline_tag: text-generation
language:
- en
- hi
- zh
new_version: Neura-Tech-AI/Nexa-AI-4B-Instruct
tags:
  - Neura Tech AI
  - Lumina AI
  - Nexa AI
  - instruct
  - llm
  - transformer
  - qwen
  - multilingual
  - conversational
---

# Nexa-AI-4B-Instruct

> A collaborative open-source large language model developed by **Neura Tech AI** and **Lumina AI**.

## Overview

**Nexa-AI-4B-Instruct** is an instruction-tuned large language model built on top of **Qwen/Qwen3-4B-Instruct-2507**.

This project is jointly developed by:

- **Neura Tech AI**
- **Lumina AI**

Nexa AI focuses on delivering a capable multilingual AI assistant with strong performance in:

- General conversation
- Instruction following
- Coding
- Mathematics
- Logical reasoning
- Tool calling & AI agents
- Multilingual understanding (including English, Hindi, Chinese, and more)

## Base Model

**Base Model:** `Qwen/Qwen3-4B-Instruct-2507`

We sincerely thank the Qwen Team for releasing the Qwen3 model family under the Apache 2.0 License, which made this project possible.

## Developers

**Project:** Nexa AI

**Developed by:**
- Neura Tech AI
- Lumina AI

## Model Details

- Model Name: **Nexa-AI-4B-Instruct**
- Base Model: **Qwen/Qwen3-4B-Instruct-2507**
- Architecture: Transformer Decoder
- Parameters: ~4 Billion
- Context Length: 262,144 Tokens (Inherited from the base model)
- License: Apache-2.0 (Base model license)

## Features

- High-quality instruction following
- Coding assistance
- Mathematical reasoning
- Agent & tool calling support
- Multilingual capabilities
- Long-context understanding
- Fine-tuned alignment for helpful responses
- 

## Performance

|  | GPT-4.1-nano-2025-04-14 | Qwen3-30B-A3B Non-Thinking | Qwen3-4B Non-Thinking | Nexa-AI-4B-Instruct |
|--- | --- | --- | --- | --- |
| **Knowledge** | | | |
| MMLU-Pro | 62.8 | 69.1 | 58.0 | **69.6** |
| MMLU-Redux | 80.2 | 84.1 | 77.3 | **84.2** |
| GPQA | 50.3 | 54.8 | 41.7 | **62.0** |
| SuperGPQA | 32.2 | 42.2 | 32.0 | **42.8** |
| **Reasoning** | | | |
| AIME25 | 22.7 | 21.6 | 19.1 | **47.4** |
| HMMT25 | 9.7 | 12.0 | 12.1 | **31.0** |
| ZebraLogic | 14.8 | 33.2 | 35.2 | **80.2** |
| LiveBench 20241125 | 41.5 | 59.4 | 48.4 | **63.0** |
| **Coding** | | | |
| LiveCodeBench v6 (25.02-25.05) | 31.5 | 29.0 | 26.4 | **35.1** |
| MultiPL-E | 76.3 | 74.6 | 66.6 | **76.8** |
| Aider-Polyglot |  9.8 | **24.4** | 13.8 | 12.9 |
| **Alignment** | | | |
| IFEval | 74.5 | **83.7** | 81.2 | 83.4 |
| Arena-Hard v2* | 15.9 | 24.8 | 9.5 | **43.4** |
| Creative Writing v3 | 72.7 | 68.1 | 53.6 | **83.5** |
| WritingBench | 66.9 | 72.2 | 68.5 | **83.4** |
| **Agent** | | | |
| BFCL-v3 | 53.0 | 58.6 | 57.6 | **61.9** |
| TAU1-Retail | 23.5 | 38.3 | 24.3 | **48.7** |
| TAU1-Airline | 14.0 | 18.0 | 16.0 | **32.0** |
| TAU2-Retail | - | 31.6 | 28.1 | **40.4** |
| TAU2-Airline | - | 18.0 | 12.0 | **24.0** |
| TAU2-Telecom | - | **18.4** | 17.5 | 13.2 |
| **Multilingualism** | | | |
| MultiIF | 60.7 | **70.8** | 61.3 | 69.0 |
| MMLU-ProX | 56.2 | **65.1** | 49.6 | 61.6 |
| INCLUDE | 58.6 | **67.8** | 53.8 | 60.1 |
| PolyMATH | 15.6 | 23.3 | 16.6 | **31.1** |

*: For reproducibility, we report the win rates evaluated by GPT-4.1.

## © 2026 Neura Tech AI & Lumina AI. All rights reserved.