The first natively multimodal model in GLM-5 series
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!
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.
On the analytics side, GLM-5.3-Flash competes within Open Source and Artificial Intelligence — topics that collectively have 546.1k followers on Product Hunt. The dashboard above tracks how GLM-5.3-Flash performed against the three products that launched closest to it on the same day.
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.
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!