AI tool comparison
GLM-5.1 vs Qwen3.6-35B-A3B
Which one should you ship with? Here is the side-by-side panel verdict, pricing read, reviewer split, and community vote comparison.
AI Models
GLM-5.1
#1 on SWE-Bench Pro — 744B MoE model that runs autonomously for 8 hours
50%
Panel ship
—
Community
Paid
Entry
GLM-5.1 is Z.AI's post-training upgrade of the 744B Mixture-of-Experts GLM-5 model, and it has just claimed the top spot on SWE-Bench Pro with a score of 58.4 — beating GPT-5.4 (57.7), Claude Opus 4.6 (57.3), and Gemini 3.1 Pro (54.2). The model is designed for long-horizon agentic tasks and can run autonomously for up to 8 hours across thousands of iterations on a single problem. The agentic capabilities include extended context retention, tool-calling with recovery loops, and a reinforcement-trained "persistence" mode that keeps the model on-task through failures and dead ends rather than surfacing errors to the user. The model was trained entirely on Huawei Ascend 910B chips using the MindSpore framework — no US silicon, no CUDA. The geopolitical dimension is as significant as the technical one: GLM-5.1 is direct evidence that US export controls on Nvidia hardware have not meaningfully slowed China's frontier model development. The 8-hour autonomous execution window is also a step-change from current agentic systems that struggle past 20-30 minutes of coherent work — if this benchmark holds up in real-world testing, it's a genuine advancement in the class of problems AI agents can independently solve.
Open Source Models
Qwen3.6-35B-A3B
35B total, 3B active: Alibaba's lean MoE coding beast goes fully open source
75%
Panel ship
—
Community
Free
Entry
Alibaba's Qwen team open-sourced Qwen3.6-35B-A3B on April 16, 2026 — a sparse Mixture-of-Experts model with 35 billion total parameters but only ~3 billion active per forward pass. That architectural trick is the whole story: you get near-frontier performance while consuming compute comparable to a 3B dense model. It's available under Apache 2.0 on Hugging Face and ModelScope. The model supports a 262K token context window (extensible to 1M with YaRN), multimodal inputs including text, images, and video, and is purpose-built for agentic coding workflows. On SWE-bench and Terminal-Bench it outperforms the much larger dense Qwen3.5-27B, matching Gemma4-31B on several benchmarks. RefCOCO visual grounding score hits 92.0 — some multimodal metrics reach Claude Sonnet 4.5 territory. Community reaction has been immediate: r/LocalLLaMA lit up with benchmarks showing it solving coding tasks that models with 10x the active parameters couldn't handle. The FP8 quantized variant runs comfortably on a single 24GB consumer GPU, making this the most capable locally-runnable coding agent most developers have ever had access to.
Reviewer scorecard
“If the 8-hour autonomous execution claim is real and not cherry-picked, this changes the calculus for using AI on genuinely hard engineering problems. SWE-Bench Pro #1 is also a credible metric — I want to test this on my own repos immediately.”
“3B active parameters with 35B parameter breadth is engineering magic. I'm getting near-frontier coding results in Cline and running it locally on a 3090 — the refusals are lower than Claude for security research too. Apache 2.0 means I can fine-tune it on my codebase. This is the best open-source coding model I've used.”
“SWE-Bench benchmarks have historically shown poor correlation with real-world coding productivity, and the '8-hour autonomous' claim needs independent validation. Z.AI is also a relatively unknown quantity compared to Anthropic or Google — API reliability and pricing are completely unproven.”
“MoE models have notoriously bad batching throughput — if you're serving this at scale, the economics don't work out. And Alibaba's track record on long-term model support and safety filtering is shakier than Google or Anthropic. It's impressive in isolation, but enterprise teams should pressure-test it before replacing frontier APIs.”
“The strategic significance of a Chinese lab hitting #1 on the coding benchmark using zero US hardware cannot be overstated. The export control strategy is officially not working as intended, and GLM-5.1 will accelerate the geopolitical AI arms race in ways that reshape the entire industry.”
“The gap between open and closed models is closing faster than anyone predicted. When a freely downloadable model matches Claude Sonnet on multimodal benchmarks, the frontier lab pricing power evaporates. Qwen3.6-35B-A3B is another milestone in the commoditization of intelligence — and commoditization always accelerates adoption.”
“For creative work, I need a model with strong multimodal capabilities and reliable API access — both unproven for GLM-5.1. The coding benchmark lead is impressive but not directly relevant to my workflows. I'll wait for independent reviews before switching.”
“I don't often care about coding models, but this one handles image + video understanding for design briefs surprisingly well. I used it to analyze a competitor's UI and generate a full redesign spec. The 262K context means I can feed entire brand guidelines without chunking.”
Weekly AI Tool Verdicts
Get the next comparison in your inbox
New AI tools ship daily. We compare them before you waste an afternoon.