Cursor Adds GLM 5.3 and GLM 5.3 Flash to Its Model Picker
Cursor lists Z.ai's GLM 5.3 and GLM 5.3 Flash in its model picker. GLM 5.3 is positioned for higher-quality work, while Flash is the smaller and faster member of the family. Both models support Cursor's agent tools and draw from the third-party Other Models usage pool.
Cursor has added GLM 5.3 and GLM 5.3 Flash to the models available in Cursor. To add either model to the model picker, Cursor's model pages direct users to Cursor Settings > Models. (Cursor announcement; GLM 5.3 documentation; GLM 5.3 Flash documentation)
Both models support a 1M-token context window and have access to all of Cursor's agent tools. Each model supports three reasoning levels, Low, High, and Max, with High as the default. (Cursor's GLM 5.3 documentation; Cursor's GLM 5.3 Flash documentation)
Which Model to Choose
Cursor describes GLM 5.3 as Z.ai's latest open-weight coding model and the successor to GLM 5.2. GLM 5.3 Flash is the smaller, faster option in the same family. Cursor recommends GLM 5.3 for higher quality on harder tasks. (Cursor's GLM 5.3 documentation; Cursor's GLM 5.3 Flash documentation)
Both model pages describe access to all Cursor agent tools. The models are served by Cursor through its inference partners. (Cursor's GLM 5.3 documentation; Cursor's GLM 5.3 Flash documentation)
Usage and Pricing Context
Cursor says its plans have two usage pools and that both GLM 5.3 models draw from the third-party Other Models pool. The GLM 5.3 page says its per-token rates match GLM 5.2 and that pricing is flat across the full context window, with no long-context surcharge or separate cache-write fee. The GLM 5.3 Flash page also says pricing is flat across the full context window, with no long-context surcharge or separate cache-write fee. (Cursor's GLM 5.3 documentation; Cursor's GLM 5.3 Flash documentation)
Before a large run, check your account's current usage details and the model documentation for the costs tied to the Other Models pool. (Cursor's GLM 5.3 documentation; Cursor's GLM 5.3 Flash documentation)
Bottom Line
For a quick comparison, pick a task from your backlog, run it with both models, and check the Other Models pool before using either for longer work.
Sources
- Cursor, "GLM 5.3"
- Cursor, "GLM 5.3 Flash"
- Cursor, "GLM 5.3 and GLM 5.3 Flash are now available in Cursor" (October 1, 2026)
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Frequently Asked Questions
How do I add GLM 5.3 in Cursor?
Open Cursor Settings, go to Models, and add GLM 5.3 or GLM 5.3 Flash to the model picker.
What is the difference between GLM 5.3 and GLM 5.3 Flash?
GLM 5.3 Flash is the smaller, faster family member; GLM 5.3 is the higher-quality choice for harder tasks.
Do GLM 5.3 models support Cursor's agent tools?
Yes. Both models have access to the full set of Cursor agent tools.
Which Cursor usage pool do these models use?
Both draw from Cursor's third-party Other Models usage pool. Check your account's usage details before running them at scale.