Question 1

What is GLM 5.3 good for?

Accepted Answer

An open-weight text model by the Chinese company Z.ai, aimed at long-context coding and agentic workflows. In AI Lab it runs through Mistral's API. 1 of 5 outputs load without errors; 2 more ran after one fix by the same model. Its best technical result was on the “Monitor test” prompt (99/100). Did not work (original output): Solar System, GTA-style game, New York & Central Park map, Chess with an engine.

Question 2

How did GLM 5.3 do in the AI Lab tests?

Accepted Answer

1 of 5 outputs load without errors; 2 more ran after one fix by the same model. Its best technical result was on the “Monitor test” prompt (99/100). Did not work (original output): Solar System, GTA-style game, New York & Central Park map, Chess with an engine. In the objective perft chess test it passed 0 of 6 positions. Average time per prompt 7 min 19 s – rank 21 of 27 models by speed. Average cost per prompt $0.43 – rank 23 of 27 models from the cheapest. Overall score 18/100 – rank 26 of 27 models. Technical health (speed, errors, accessibility, mobile) 81/100 – rank 23 of 27 models. Automatic UX rating 15/100 – rank 26 of 27 models.

Question 3

How much does GLM 5.3 cost?

Accepted Answer

Through the API GLM 5.3 costs $1.4 per million input and $4.4 per million output tokens (price list as of 17/10/2026).

Question 4

When was GLM 5.3 released?

Accepted Answer

GLM 5.3 by Z.ai was released on 15/09/2026.

GLM 5.3

What is GLM 5.3 good for?

How did GLM 5.3 do in the AI Lab tests?

Outputs

Solar System

GTA-style game

Monitor test

New York & Central Park map

Chess with an engine