GLM-5.3 was released by Z.ai on August 14, 2026, as an open-weights flagship model in the GLM line.
GLM-5.3 keeps GLM-5.2's base model and API price but, after more post-training, completes 28.3% of Terminal-Bench 3.0 tasks instead of 4.6% and 66.9% of DeepSWE v1.1 tasks instead of 46.2%.
Compared with GLM-5.2 · the model it replaces
Completes 28% of very hard command-line coding tasks, up from under 5%
Terminal-Bench 3.0 — hard multi-step jobs in a computer terminal
28.3%
▲ up from 4.6% · +23.7 points
Scores 11 points higher than GLM-5.2 on an independent intelligence test
Artificial Analysis Intelligence Index v4.3.2 — one score averaging 10 hard tests
45
▲ up from 34 · +11 points
Costs developers the same as GLM-5.2
Price per 1M tokens — what developers pay, input / output
$1.40 / $4.40
same as GLM-5.2
Every Monday, only when something shipped: the AI models that came out, what each one changed, and which lines are due next.
We email you a link to confirm first · unsubscribe anytime · read past issues · about the newsletter
GLM-5.3 is the current model in this line. The card shows how long it has been since the last release against the line's usual gap and its recent ones — the rhythm, not a date.
Newest first. See the full line with every card →