GLM-5.3-Prime is the high-speed variant of Z.ai's GLM-5.3, inheriting its full capabilities while delivering 1.5–2× the output throughput through inference acceleration. It supports text input and output with a 1M-token...
With CoreAI, you can start chatting with Z.ai: GLM 5.3 Prime instantly — no separate subscription needed. CoreAI lets you chat with Z.ai: GLM 5.3 Prime alongside 300+ other AI models from Z-ai and other providers like OpenAI, Anthropic, Google, Meta, and more.
Measured against all 441 chat models CoreAI serves, Z.ai: GLM 5.3 Prime sits at #114 for context capacity — 1M tokens, roughly 750,000 words or 1,500 pages of text in a single conversation. On price, it is the #201 cheapest of 205 standard-tier models by input cost. Released 2026-09-23, it is one of the 2 newest additions to the catalog. It supports step-by-step reasoning (thinking mode).
Every model in this table is available on CoreAI — open the web app and run the same prompt through Z.ai: GLM 5.3 Prime and Z.ai: GLM 5.3 side by side to judge with your own eyes.
A typical question (about 1,000 tokens in, 500 out) runs $0.00720 on Z.ai: GLM 5.3 Prime's raw per-token rates; a heavy session with a 50K-token document costs about $0.184. On CoreAI you don't juggle these numbers — one subscription covers Z.ai: GLM 5.3 Prime and 300+ other models under a plan usage limit, with no API keys. See plans.
Z.ai: GLM 5.3 Prime handles 1M tokens of context — roughly 750,000 words, or about 1,500 pages of text in one conversation.
Z.ai: GLM 5.3 Prime's underlying rates are $2.8 per 1M input tokens and $8.8 per 1M output tokens. On CoreAI it is included in one subscription alongside 300+ models, so there is no per-token billing to manage.
No — Z.ai: GLM 5.3 Prime is text-only. If you need image understanding, its standard-tier peers with vision are listed in the comparison table above.
Yes. Z.ai: GLM 5.3 Prime can work through problems step by step before answering; on CoreAI you can toggle thinking mode per message.
Open the CoreAI web app or the iOS/Android app, pick Z.ai: GLM 5.3 Prime in the model selector, and chat — no API key, no per-token billing. One subscription covers Z.ai: GLM 5.3 Prime and 300+ other models.
The closest alternatives on CoreAI are Z.ai: GLM 5.3, Anthropic: Claude Opus 5.5 (batch), inclusionAI: Ling 3.0 Flash — similar tier and capability. The fastest way to choose is running one prompt through them side by side in CoreAI's Compare view.
Chat with Z.ai: GLM 5.3 Prime and 300+ other AI models — all in one app.