Nex AGI announces Nex-N2.6, an open-source 321B parameter multimodal model optimized for long-horizon agentic tasks and computer use.

On November 11, 2026, Nex AGI officially announced the release of Nex-N2.6, a significant leap forward in the evolution of multimodal agentic models. Open-sourced by the Shanghai Innovation Institute, this release marks a pivotal moment for developers seeking high-performance, open-weight models capable of complex, long-horizon reasoning and tool manipulation.
Unlike previous iterations that focused primarily on chat capabilities, Nex-N2.6 is architected from the ground up to function as an autonomous agent. It is designed to navigate digital environments, execute code, and manage multi-step workflows across text, image, and video modalities. This release succeeds the Nex-N2.5-Pro, addressing critical bottlenecks in reasoning repetition and tool-calling reliability.
Nex-N2.6 is built upon the robust GLM-5.3-Flash foundation, utilizing a massive 321B parameter architecture. To ensure accessibility for high-performance deployment, the repository ships with FP8-quantized weights, allowing developers to run this heavyweight model on optimized hardware without the typical memory overhead of full-precision weights.
The model's multimodal engine supports seamless integration of text, image, and video inputs. This allows for sophisticated 'computer use' capabilities, where the model can perceive a GUI through screenshots or video streams and interact with it like a human user. The architecture is specifically tuned for long-horizon tasks, maintaining coherence over extended sequences of tool-driven actions.
The most striking improvement in Nex-N2.6 is the drastic reduction in reasoning repetition. During internal checkpoint-replay evaluations, the reasoning repetition rate plummeted from 16.0% in Nex-N2.5-Pro to just 1.6%—a massive 90% relative reduction. This makes the model significantly more efficient for iterative problem-solving and coding tasks.
In agentic benchmarks, Nex-N2.6 sets a new standard. It achieved a score of 83.0 on OSWorld, outperforming both the base GLM-5.3-Flash (78.0) and the previous Nex-N2.5-Pro (82.2), while significantly outpacing DeepSeek V4.1 Flash (71.7). In Terminal-Bench 2.1, the model scored 84.1, placing it on par with the base model and ahead of DeepSeek V4.1 Flash (82.7).
Reliability in tool use is another standout metric. Nex-N2.6 demonstrated 100% tool-list adherence in internal evaluations, ensuring that every tool call made was valid and within the provided schema. This is supported by an overall non-repetition rate of 97.8% and a 100% valid tool selection rate when tools are present.
To demonstrate the practical utility of Nex-N2.6, Nex AGI showcased an end-to-end agentic 3D workflow. In a live demo, the model was tasked with building a complex Blender model starting from nothing but a single photograph. The model successfully analyzed the image, matched materials and lighting, and eventually rendered a fully animated showcase.
This level of cross-modal reasoning—translating 2D visual data into 3D spatial structures and procedural instructions—highlights the model's readiness for professional creative pipelines and automated engineering tasks.
Nex-N2.6 is highly accessible via both managed APIs and open-source deployment. For developers looking for low-latency, managed access, the model is live on OpenRouter and the MOSS API platform. The pricing is designed to be competitive for high-volume agentic workflows that require large context windows.
With a 262k context window, the model is ideal for RAG-heavy applications and long-form document analysis. The cost structure remains extremely lean, even for a 321B parameter model, making it viable for production-scale deployment.
Nex-N2.6 is optimized for several high-impact domains. Its primary strength lies in 'Agentic Coding,' where it can not only write code but also navigate a terminal, run tests, and debug errors in real-time. Its multimodal nature makes it a prime candidate for 'Computer Use' agents that automate UI-based workflows.
Other key applications include complex RAG (Retrieval-Augmented Generation) involving video and image datasets, long-horizon task planning in robotics simulations, and automated 3D asset generation for game development and VFX.
Developers can immediately start experimenting with Nex-N2.6 by accessing it through the MOSS API platform or via OpenRouter. For those preferring local deployment, the FP8-quantized weights are available under the Apache 2.0 license, allowing for full control over the inference stack.
The model is ready for integration into existing agent frameworks like LangChain or AutoGPT, thanks to its perfect tool-calling adherence and standardized output formats.
API Pricing — Input: $0.12 per million tokens / Output: $0.40 per million tokens / Context: 262k