ERNIE 4.5 VL 424B-A47B is Baidu's vision-language giant — 424 billion total parameters understanding both Chinese text and images, the largest open Chinese VL model ever trained.
ERNIE 4.5 VL 424B is an AI model released 2025 by Baidu, a leading organization in large language model research. Massive vision-language ERNIE — 424B MoE with vision capabilities. Elite Chinese multimodal understanding. With 424B total (47B active via MoE) and a 128K tokens context window, ERNIE 4.5 VL 424B 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.
ERNIE 4.5 VL 424B employs a Mixture-of-Experts (MoE) architecture with 424B total (47B active via MoE). In a MoE design, only a subset of "expert" sub-networks activates for each token during inference — ERNIE 4.5 VL 424B has 424B total (47B active via MoE) 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 ERNIE 4.5 VL 424B can be offered at the scale that platforms like LITHOVEX AI make possible.
As of 2026-10-16, ERNIE 4.5 VL 424B by Baidu demonstrates measurable performance on standard AI evaluation benchmarks. On CMMLU (Chinese) — which tests world knowledge across 57 academic subjects from elementary to professional level — it achieves 87.8%. These scores place ERNIE 4.5 VL 424B — at 424B total (47B active via MoE) 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 ERNIE 4.5 VL 424B are: Vision-language at massive scale for Chinese market; Processes images and documents in Chinese and English; MoE efficiency at 424B scale. These make it particularly well-suited for Chinese enterprise visual document analysis, Multimodal AI for Chinese businesses. Users working on complex, multi-step problems benefit most from ERNIE 4.5 VL 424B's ability to maintain coherence across long inputs and produce structured, verifiable outputs.
Like all current AI systems, ERNIE 4.5 VL 424B has limitations: Massive infrastructure requirement; Chinese-market focused. For production deployments, validating outputs against authoritative sources — especially for domain-specific or time-sensitive information — remains best practice. Baidu continues to improve ERNIE 4.5 VL 424B through ongoing research.
ERNIE 4.5 VL 424B 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 ERNIE 4.5 VL 424B accessible to students, researchers, developers, and early-stage teams globally.
As of 2026-10-16, ERNIE 4.5 VL 424B by Baidu demonstrates measurable performance on standard AI evaluation benchmarks. On CMMLU (Chinese) — which tests world knowledge across 57 academic subjects from elementary to professional level — it achieves 87.8%. These scores place ERNIE 4.5 VL 424B — at 424B total (47B active via MoE) 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.
Vision-language MoE: 424B total / 47B active, multimodal Chinese-English
The training pipeline for ERNIE 4.5 VL 424B 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. Baidu's research team — based in China — has optimized ERNIE 4.5 VL 424B for the specific capability profile described above.
Inference efficiency: ERNIE 4.5 VL 424B at 424B total (47B active via MoE) 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 ERNIE 4.5 VL 424B on LITHOVEX AI takes under two minutes. Follow these steps:
For best results with ERNIE 4.5 VL 424B: provide specific, context-rich prompts; include examples when generating code; specify output format when structure matters; break complex tasks into focused sub-questions.
Frontier Chinese-language visual document analysis
Large-scale image-text understanding for Chinese content platforms
Medical imaging with Chinese clinical documentation
Chinese e-commerce visual search and analysis
Government document digitization at frontier multimodal quality
Baidu is China's leading search engine and one of the first Chinese tech giants to invest heavily in AI, establishing its AI research center in Silicon Valley in 2013 under Andrew Ng. The ERNIE (Enhanced Representation through Knowledge Integration) model family, now at version 4.5, represents Baidu's flagship open-weight contributions. ERNIE models are optimized for Chinese-language understanding and generation, leveraging access to Chinese internet-scale training data. The ERNIE 4.5 family includes both dense and MoE variants, with the flagship reaching 300 billion total parameters. Baidu's AI products serve hundreds of millions of Chinese users through Baidu Search, ERNIE Bot, and enterprise APIs.
Funding: Public company (NASDAQ: BIDU, $30B+ market cap)
Founded: 2000, headquartered in China.
ERNIE 4.5 VL 424B by Baidu 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 ERNIE 4.5 VL 424B 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.
ERNIE 4.5 VL 424B is released under ERNIE Model License, which means you can download and run it on your own hardware. Below are the quickest ways to get started.
LITHOVEX AI runs ERNIE 4.5 VL 424B 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.
ERNIE VL 424B represents China's most ambitious open-source multimodal AI. Built on Baidu's decade of Chinese internet data including images from Baidu Image Search and documents from Baidu's information ecosystem, it sets a new global standard for Chinese-language visual AI.
ERNIE 4.5 VL 424B by Baidu has the following version history and notable updates:
For the complete changelog and latest release notes, visit the official Baidu model page.