InternVL3.5
Open-source MLLM with SOTA reasoning capabilities
InternVL3.5 launched on September 2, 2025 with 11 votes, #1,008 of 8,160 launches that month and more than 50% of that year's launches. The site was still online in September 2026, 1 year on.
What it does
InternVL3.5 is a new family of open-source multimodal models, from 1B to a 241B flagship. Powered by Cascade Reinforcement Learning, it achieves SOTA results on reasoning and agentic tasks, with a 4x inference speedup over its predecessor.
We’re on a journey to advance and democratize artificial intelligence through open source and open science.
[📂 GitHub] [📜 InternVL 1.0] [📜 InternVL 1.5] [📜 InternVL 2.5] [📜 InternVL2.5-MPO] [📜 InternVL3] [📜 InternVL3.5] We introduce InternVL3.5 , a new family of open-source multimodal models that significantly advances versatility, reasoning capability, and inference efficiency along the InternVL series. A key innovation is the Cascade Reinforcement Learning (Cascade RL) framework, which enhances reasoning through a two-stage process: offline RL for stable convergence and online RL for refined alignment. This coarse-to-fine training strategy leads to substantial improvements on downstream reasoning tasks, e.g., MMMU and MathVista. To optimize efficiency, we propose a Visual Resolution…from huggingface.co
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