GLM-5.3-Flash is the first natively multimodal model in the GLM-5 series. With 320B total parameters and just 18B active parameters, it outperforms GLM-5.2 across benchmarks and real-world workloads at one-tenth the price, while approaching Claude Opus 4.8 on coding and agentic benchmarks.
People were already running it on @opencode and OpenRouter before the name showed up. And it was the most used model of the week there:
The public version is 320B-A18B w/ native multimodal, 1M context, MIT weights. Sparse plus linear attention is how they keep that long window cheaper to serve.
API is $0.15/M in and $0.50/M out. First two weeks are 50% off!
So, Ox Alpha is GLM-5.3-Flash!? lfg. been running it with @Kilo Code for a few days. it's fast, holds up on long agentic runs, and it keeps finishing tasks in no time. the new default.
I wonder when GLM models will finally learn to understand/read images sent to them.
About GLM-5.3-Flash on Product Hunt
“The first natively multimodal model in GLM-5 series”
GLM-5.3-Flash launched on Product Hunt on August 27th, 2026 and earned 96 upvotes and 3 comments, placing #20 on the daily leaderboard. GLM-5.3-Flash is the first natively multimodal model in the GLM-5 series. With 320B total parameters and just 18B active parameters, it outperforms GLM-5.2 across benchmarks and real-world workloads at one-tenth the price, while approaching Claude Opus 4.8 on coding and agentic benchmarks.
GLM-5.3-Flash was featured in Open Source (68.8k followers) and Artificial Intelligence (477.3k followers) on Product Hunt. Together, these topics include over 132.4k products, making this a competitive space to launch in.
Who hunted GLM-5.3-Flash?
GLM-5.3-Flash was hunted by Zac Zuo. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Want to see how GLM-5.3-Flash stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
Zac Zuo
Hi everyone!
So Ox Alpha was GLM-5.3-Flash 🐂
People were already running it on @opencode and OpenRouter before the name showed up. And it was the most used model of the week there:
The public version is 320B-A18B w/ native multimodal, 1M context, MIT weights. Sparse plus linear attention is how they keep that long window cheaper to serve.
API is $0.15/M in and $0.50/M out. First two weeks are 50% off!