Qwen3 Coder 480B-A35B is the world's most capable open-weight code model — 480 billion total parameters, 35B active, and state-of-the-art SWE-bench performance for real-world software engineering tasks.
Qwen3 Coder 480B is an AI model released 2025 by Qwen, a leading organization in large language model research. Largest Qwen Coder — 480B params, 35B active, 256k context. The flagship for full-codebase agentic software engineering. With 480B total (35B active) and a 128K tokens context window, Qwen3 Coder 480B is designed to excel across a range of demanding tasks — from software engineering and mathematical problem-solving to multilingual content generation and long-document analysis.
Qwen3 Coder 480B employs a Mixture-of-Experts (MoE) architecture with 480B total (35B active). In a MoE design, only a subset of "expert" sub-networks activates for each token during inference — Qwen3 Coder 480B has 480B total (35B active) total parameters but uses only a fraction per token. This allows the model to store significantly more learned knowledge than a comparably-priced dense model. MoE architectures have proven effective at reaching frontier-level capability while keeping serving costs manageable — a key reason Qwen3 Coder 480B can be offered at the scale that platforms like LITHOVEX AI make possible.
As of 2026-10-16, Qwen3 Coder 480B by Qwen demonstrates measurable performance on standard AI evaluation benchmarks. On LiveCodeBench — which tests practical software engineering — it achieves 75.3%. For software engineering tasks, Qwen3 Coder 480B scores 75.3% on LiveCodeBench, which tests practical software engineering. These scores place Qwen3 Coder 480B — at 480B total (35B active) of parameters — in a competitive position within its model class. Note that benchmark scores reflect controlled evaluation conditions; real-world performance varies by task, prompt design, and domain specificity.
The primary strengths of Qwen3 Coder 480B are: Most capable open coding model as of mid-2025 — rivals or exceeds GPT-4 on coding; 480B total knowledge at 35B inference cost; 95.8% HumanEval — elite Python code generation; Apache 2.0 — free. These make it particularly well-suited for Frontier-level software engineering AI, Production code generation requiring maximum quality. Users working on complex, multi-step problems benefit most from Qwen3 Coder 480B's ability to maintain coherence across long inputs and produce structured, verifiable outputs.
Like all current AI systems, Qwen3 Coder 480B has limitations: Massive infrastructure for full 480B serving; Slow for latency-sensitive applications at full scale. For production deployments, validating outputs against authoritative sources — especially for domain-specific or time-sensitive information — remains best practice. Qwen continues to improve Qwen3 Coder 480B through ongoing research.
Qwen3 Coder 480B is available on LITHOVEX AI with a free account. Unlike direct API access — which requires billing setup, API key management, and per-token charges — LITHOVEX AI provides a seamless browser interface with no setup required, making Qwen3 Coder 480B accessible to students, researchers, developers, and early-stage teams globally.
As of 2026-10-16, Qwen3 Coder 480B by Qwen demonstrates measurable performance on standard AI evaluation benchmarks. On LiveCodeBench — which tests practical software engineering — it achieves 75.3%. For software engineering tasks, Qwen3 Coder 480B scores 75.3% on LiveCodeBench, which tests practical software engineering. These scores place Qwen3 Coder 480B — at 480B total (35B active) of parameters — in a competitive position within its model class. Note that benchmark scores reflect controlled evaluation conditions; real-world performance varies by task, prompt design, and domain specificity.
MoE: 480B total / 35B active, largest Qwen3 Coder
The training pipeline for Qwen3 Coder 480B involves multiple stages: large-scale pretraining on diverse multilingual text and code corpora to develop broad world knowledge, followed by supervised fine-tuning on instruction-response pairs, and alignment techniques such as RLHF or DPO. Each stage refines the model's helpfulness, accuracy, and safety. Qwen's research team — based in China — has optimized Qwen3 Coder 480B for the specific capability profile described above.
Inference efficiency: Qwen3 Coder 480B at 480B total (35B active) is designed to deliver quality outputs at practical serving speeds. Its 128K tokens context window enables processing entire documents, multi-file codebases, and extended conversation histories — particularly valuable for contract review, technical documentation analysis, and codebase-level AI assistance.
Getting started with Qwen3 Coder 480B on LITHOVEX AI takes under two minutes. Follow these steps:
For best results with Qwen3 Coder 480B: provide specific, context-rich prompts; include examples when generating code; specify output format when structure matters; break complex tasks into focused sub-questions. Since Qwen3 Coder 480B supports extended reasoning, prompting it to "think step by step" or "show your reasoning" activates deeper chain-of-thought analysis for math, logic, and complex problems.
Autonomous software engineering for entire sprints
Resolving real GitHub issues autonomously on production repos
Multi-language codebase migration and modernization
Generating production-ready microservices from specifications
Enterprise-grade code review and security audit automation
Qwen (Tongyi Qianwen) is the AI model family from Alibaba Cloud, the cloud computing arm of Alibaba Group — one of the world's largest technology companies with over $100 billion in annual revenue. Alibaba invested in AI research through its DAMO Academy starting in 2017. The Qwen3 generation, released in April 2025, represents a major leap in open-model capability: models from 8B to 235B parameters, with hybrid thinking modes and 119-language support, all released under Apache 2.0 licenses for commercial use. Qwen models consistently rank at the top of the Open LLM Leaderboard and have been widely adopted across Asia, Europe, and North America for both commercial and research applications.
Funding: Part of Alibaba Group (NYSE: BABA, $100B+ annual revenue)
Founded: 1999, headquartered in China.
Qwen3 Coder 480B by Qwen competes in a field with several strong alternatives. Below is a detailed side-by-side comparison against commonly listed alternatives, using benchmark data and capability profiles in the catalog.
Both Qwen3 Coder 480B and the models above are available free on LITHOVEX AI — test them side by side on your real tasks before committing to a subscription with any provider.
Qwen3 Coder 480B is released under Apache 2.0, which means you can download and run it on your own hardware. Below are the quickest ways to get started.
LITHOVEX AI runs Qwen3 Coder 480B on cloud infrastructure, so you can use it instantly in your browser without downloading anything, configuring drivers, or managing VRAM. Create a free account and start in under 60 seconds.
At 480B total parameters, Qwen3 Coder 480B-A35B is the largest open-weight code model ever released. It sets the global benchmark for open-source software engineering AI, with SWE-bench Verified scores that challenge proprietary coding assistants from OpenAI and Anthropic.
Qwen3 Coder 480B by Qwen has the following version history and notable updates:
For the complete changelog and latest release notes, visit the official Qwen model page.