AI tool comparison
GLM-5.1 vs SAM 3.1
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.
Computer Vision
SAM 3.1
Meta's Segment Anything doubles video speed via object multiplexing
75%
Panel ship
—
Community
Free
Entry
SAM 3.1 is Meta's latest update to the Segment Anything Model family, released March 27 2026 as a drop-in replacement for SAM 3. The core innovation is object multiplexing: where the previous model required a separate processing pass for each tracked object, SAM 3.1 processes all tracked objects together in a single shared-memory pass, eliminating redundant computation across the decoder. The result is a doubling of throughput for videos with a medium number of objects—from 16 to 32 frames per second on a single H100 GPU—without sacrificing tracking accuracy. For applications like sports analytics, surveillance, or video editing that track 5–20 objects simultaneously, this makes real-time deployment on commodity cloud hardware feasible for the first time. SAM 3.1 inherits SAM 3's open-vocabulary segmentation capability (segmenting objects described by text prompts), which achieved 75–80% of human performance on the SA-CO benchmark covering 270K unique concepts. The model checkpoint is available on Hugging Face at `facebook/sam3.1`, and the codebase supports fine-tuning via the facebookresearch/sam3 repository. Meta released SAM 3.1 under a research license with commercial use provisions similar to its predecessors.
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.”
“The multiplexing change is a genuine architectural improvement, not just parameter tuning—processing all objects together means inference cost no longer scales linearly with object count. For video pipelines tracking 10+ objects this completely changes the cost calculus for real-time deployment.”
“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.”
“32 fps on a single H100 sounds impressive until you price H100 cloud time. The research license also creates uncertainty for commercial applications—Meta's licensing terms have quietly shifted in the past, and building a production pipeline on 'research license with commercial provisions' is asking for future legal headaches.”
“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.”
“Segment Anything reaching real-time speeds on multi-object video unlocks an entire category of applications that were previously GPU-prohibitive: live sports analysis, real-time video editing, autonomous driving perception. SAM 3.1 is infrastructure for the next wave of vision applications.”
“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.”
“The open-vocabulary segmentation is what excites me most—being able to say 'segment the red jacket' rather than clicking a point means non-technical creative professionals can actually use this in video workflows. The speed improvement makes it viable in real-time editing tools.”
Weekly AI Tool Verdicts
Get the next comparison in your inbox
New AI tools ship daily. We compare them before you waste an afternoon.