Zai-GLM-5.3

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Last Checked: 2026-10-22 13:17:30.455383

Bot Information

Creator: @togetherai

Description: GLM-5.3 is Z.ai's frontier coding model, built on the same base as GLM-5.2 with every gain coming from scaled post-training. Training environments moved beyond coding exercises toward real units of expert work, some representing several days of an experienced engineer's effort, pushing the model to take ownership of substantial tasks end to end rather than relying on users to decompose and supervise each step. Thinking is always enabled, with reasoning effort adjustable across low, high, and max levels, and Z.ai reports higher accuracy at lower output-token budgets than GLM-5.2 at every effort level. Post-training also developed strong vulnerability-discovery capability, which Z.ai has directed into an ongoing coordinated disclosure program with a public ledger. Weights are released following the post-launch safety evaluation. Available on Together AI.

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Architecture

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Technical Details

Model ID: Zai-GLM-5.3

Object Type: bot

Created: Unknown

Owned By: togetherai

Root: Zai-GLM-5.3

API Last Updated: Not listed in API