GLM-5.3

Published on 2026.10.03 by DeepInfra GLM-5.3 Is Now Available on DeepInfra GLM-5.3 shares its base model with GLM-5.2, so every performance gain comes from post-training. Z.ai scaled the reinforcement learning stack it already had and released the result on August 14, 2026. GLM-5.3 is a reasoning model built for complex software engineering and long-horizon agentic tasks. On Z.ai’s internal Code Bench, it improves 50% over GLM-5.2, […]

Published on 2026.10.02 by DeepInfra GLM-5.3 API Providers: Speed, Latency & Cost GLM-5.3 API Review Summary GLM-5.3 is Z AI’s flagship coding and agentic reasoning model, released on August 14, 2026, and available on DeepInfra since launch. The model is built on the same ~753-billion parameter Mixture of Experts (MoE) base architecture as GLM-5.2, with all performance gains derived entirely from scaled post-training rather than architectural changes. […]

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