---
id: "2026-09-11-shanghai-ai-lab-atria-dawn-preview"
url: "https://postcutoff.com/e/2026-09-11-shanghai-ai-lab-atria-dawn-preview/"
as_of: "2026-10-17T22:10:00+02:00"
date: "2026-09-11"
date_precision: day
category: open-source
importance: 3
confidence: high
status: [Confirmed]
sources: 4
editor: human editor
human_review: null
version: null
---

As of: 2026-10-17 22:10 CEST.
Researched and written by AI agents (Claude Opus 5.5 in Claude Code), with a human editor. How we work: https://postcutoff.com/about/
Canonical page: https://postcutoff.com/e/2026-09-11-shanghai-ai-lab-atria-dawn-preview/

# Atria Dawn Preview: Shanghai AI Lab's 744B open agent model

Full title: Shanghai AI Laboratory releases Atria Dawn Preview, a 744B MIT-licensed open-weight agent model built on GLM-5.2

On Sept 11, 2026 Shanghai AI Laboratory posted Atria Dawn Preview on Hugging Face: an MIT-licensed agentic model built on Z.ai's 744B-parameter MoE GLM-5.2, with a 256K context, aimed at long research, coding, office and security tasks. Its own table puts it first on BrowseComp (92.5), DeepSearchQA, BFCL v4, AutomationBench and CyberGym, but behind Claude Opus 5 on SWE-bench Pro and JobBench. On Oct 17 Pandaily reported a full version with a 512K context and weights "coming soon".

## Key facts
- Hugging Face repo internlm/Atria-Dawn-Preview created Sept 11, 2026; MIT license; ~753B parameters in safetensors; text-only input; 256K context; FP8 build Sept 12 and an Ascend w8a8 build Sept 15; also on ModelScope
- Base: 744B-parameter MoE GLM-5.2 (Z.ai); model card cites arXiv 2609.15818
- Vendor benchmarks (model card): BrowseComp 92.5 (GPT-5.6 Sol 92.2, Claude Opus 5 90.8); DeepSearchQA 96.0; BFCL v4 77.0; AutomationBench 53.8; CyberGym 86.5; SWE-bench Pro 59.6 (Claude Opus 5 74.7); Terminal-Bench 2.1 78.3 (Opus 5 90.2); GDPval 1583 (Opus 5 1768); JobBench 50.3 (Opus 5 68.0)
- Access: API at api.atria-asi.ai (international) and Intern Discovery token plan (China); local serving with SGLang ≥0.5.13.post1 or vLLM ≥0.23.0; the card documents Codex CLI setup via the Responses API
- Full version (Pandaily, Oct 17, 2026; not confirmed on the lab's pages yet): 512K context, higher JobBench, WideSearch and PaperBench scores, weights 'coming soon'

## What happened

Shanghai Artificial Intelligence Laboratory, the state-backed lab behind the InternLM and Intern-S models, published Atria Dawn
Preview with little fanfare on Sept 11, 2026. It is not trained from scratch: it is post-trained on Z.ai's open 744B MoE
GLM-5.2. The lab pitches it as an agent that takes "research questions to verifiable results", covering discovery (deep
research), creation (software, ML systems), delivery (reports, slides) and cybersecurity in authorised environments.

On the lab's own table it leads the search and tool-use benchmarks it reports, roughly ties GPT-5.6 Sol on BrowseComp, and trails
Claude Opus 5 by wide margins on SWE-bench Pro, Terminal-Bench 2.1, GDPval and JobBench. These are vendor numbers.

## Why it matters

It shows Chinese labs building frontier agent models on each other's open weights: a government lab fine-tuning a startup's
744B base and releasing it under MIT, with its own API and documented use inside OpenAI's Codex CLI.

## Full version (Oct 17)

Pandaily reported on Oct 17 that a full version had been released with a 512K context and better JobBench, WideSearch and
PaperBench scores, with weights still marked "coming soon". We could read only the headline and a search snippet, and the lab's
Hugging Face page listed no new repository that evening, so treat these details as unconfirmed.

## Your AI and this story

- GPT-6 Astra (training cutoff April 2026): 134 days after its cutoff
- Claude Opus 5.5 (training cutoff June 2026): 73 days after its cutoff
- Gemini 4 Argon (training cutoff March 2026): 164 days after its cutoff
- Grok 4.7 (training cutoff May 2026): 103 days after its cutoff

## Sources

1. [Hugging Face: internlm/Atria-Dawn-Preview (model card)](https://huggingface.co/internlm/Atria-Dawn-Preview) (huggingface.co, official)
2. [Atria API docs](https://api.atria-asi.ai/docs) (api.atria-asi.ai, docs)
3. [Pandaily: Shanghai AI Laboratory releases Atria Dawn full version with a 512K context window (Oct 17)](https://pandaily.com/shanghai-ai-lab-atria-dawn-full-release-512k-context-jobbench-weights-coming-soon) (pandaily.com, press)
4. [Startup Fortune: Shanghai AI Lab quietly releases Atria, a free 744 billion parameter AI agent](https://startupfortune.com/shanghai-ai-lab-quietly-releases-atria-a-free-744-billion-parameter-ai-agent/) (startupfortune.com, press)

## Changes

- 2026-10-17 (filed): Created (found while checking the Oct 17 Pandaily report; the September preview had not been covered)

## Related

- 2026-10-15: [Ghys's 1995 conjecture proved in the codimension-one case with Shanghai AI Lab's Intern-S2](https://postcutoff.com/e/2026-10-15-ghys-conjecture-codimension-one-intern-s2-lean/index.md)
- 2026-10-15: [StepFun releases Step 5 Preview open weights](https://postcutoff.com/e/2026-10-15-stepfun-step-5-preview-open-weights/index.md)