What's this Apodex thing? (AMA prep)

Reddit r/LocalLLaMA 08/27/26, 08:24 AM Models

deep-research open-source finetuning qwen ai-model research-harness

Summary

Apodex is an open-sourced deep research harness and AI model, which is a finetune of Qwen 3.5 35B A3B, achieving performance comparable to frontier models with only 3B active parameters.

A sticky popped up "Hey, AMA today". At first I thought I missed something, but I didn't see a single mention of it here so far, aside from having never heard of it. So, as the posting was devoid of information I searched a bit, so you won't have to. As far as I can tell from a quick look it's a deep research harness & model, open-sourced 3 days ago. The model is a Qwen 3.5 35B A3B finetune. Here's a quite long blog entry about it. It can easily be tested on their main page. https://preview.redd.it/eeeaedwrnvlh1.png?width=7200&format=png&auto=webp&s=202b0c2b32add8840569dbac52b09b356471a93b According to this their latest version is mostly comparable to frontier models (but what harness was used for them?). That's quite an achievement for a model with 3B active parameters though.

Original Article

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@heyshrutimishra: Apodex 1.0 dropped and the architecture is genuinely different. It's post-trained on Qwen3.5 as a self-evolving system:…

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Apodex 1.0 is a self-evolving AI system post-trained on Qwen3.5, achieving SOTA on BrowseComp, DeepSearchQA, and HLE-text. Its 4B mini model outperforms 30B-class models, with an AgentOS runtime for task orchestration. Open weights available.

@Apodex_AI: Dive in Blog: https://apodex.com/blog/apodex-1.0 Tech report: http://apodex.com/pdf/20260608 Github: https://github.com…

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ApodexAI releases Apodex-1.0, a deep-research model that operates as a tool-using ReAct agent. Its heavy-duty mode, Apodex-1.0-H, uses an asynchronous agent team with up to 150 sub-agents and achieves new state-of-the-art results on deep-research benchmarks including BrowseComp, DeepSearchQA, HLE, and FrontierScience, surpassing models like GPT-5.5-pro and Claude-Opus-4.8.

@svpino: New paradigm for deep research models! Apodex-1.0-H is a new model that introduces a completely new way of working. Apo…

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Apodex-1.0-H is a new deep research model that introduces a multi-agent architecture where the model decomposes tasks, spawns specialist sub-agents, and uses self-verification and iterative improvement to produce answers. Open-weight variants are available on HuggingFace.

Apodex 1.1: Scaling Agentic Intelligence for Complex Work

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Apodex 1.1 improves sustained, verifiable progress on complex real-world tasks by scaling executable environments and training agents for long-horizon coordination, achieving leading performance with a smaller 35B-parameter model.

Releasing Apodex-1.0 Smol Models (0.8B, 2B, 4B Open-Weights) optimized for Agentic Verification + AgentHarness Evals

Reddit r/LocalLLaMA

Apodex releases open-weight small models (0.8B, 2B, 4B) specialized for agentic verification tasks, along with the AgentHarness evaluation framework for local agent workflows.