GLM-5.3
Z.ai's 18 Aug 2026 flagship, held back from the 17 Aug catalogue review because the weights had been announced on 14 Aug but not yet published. They are now on Hugging Face: a 753B-parameter MoE with 40B active per token, under Z.ai's own GLM-5.3 License rather than a standard open licence — commercial use is permitted subject to restrictions, so read the terms before redistributing. Artificial Analysis rates it 45 on the v4.3 Intelligence Index, the highest of any comparable open-weight model, against a class median of 18. The catch is price: at $1.40/$4.40 it is, in Artificial Analysis's own words, 'particularly expensive when comparing to other open weight models of similar size' — and its own stablemate GLM-5.3-Flash scores 42 for a tenth of the input cost. Speed is unremarkable at 67.0 tokens/second, slightly below the 69.3 class median, with a 3.11s time to first token. 1M context, text in and text out only — no vision, unlike the Flash variant. Served by 22 API providers, the widest availability of any open-weight model here.
1M
tokens
66K
tokens
$1.4
per 1M tokens
$4.4
per 1M tokens
67
tokens/sec
Aug 2026
2026-08-18
$2.90
per 1M tokens
33.1
quality per $
Capabilities
Benchmarks
Price vs Quality
Context Window in Context
- ▸ GLM-5.31M
- GPT-4.11M
- Gemini 2.5 Pro1M
- Gemini 2.0 Flash1M
- Llama 4 Maverick1M
- GPT-5.51M
- GPT-5.5 Pro1M
- Claude Opus 4.71M
Compare With
Open Source: Licensed under GLM-5.3 License
ليس على بوابتنا بعد
GLM-5.3 نموذج مفتوح الأوزان، لذا يمكنك تشغيله بنفسك. تحوّل Swfte Connect نشرك إلى نقطة نهاية مُدارة تتحدث الواجهة نفسها التي تستخدمها بقية نماذج هذا الدليل.
curl https://api.swfte.com/agents/v2/gateway/chat/completions \
-H "Authorization: Bearer $SWFTE_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "zhipu:glm-5.3",
"messages": [{"role": "user", "content": "Hello"}]
}'About GLM-5.3
GLM-5.3 is a open-source AI model by Z.ai (Zhipu AI), released on August 18, 2026. It supports a context window of 1000K tokens and can generate up to 66K output tokens.
At $1.4 per million input tokens and $4.4 per million output tokens, its blended cost of $2.90/1M tokens puts it in the mid-range pricing tier. Its value score of 33.1 reflects the balance of quality and cost.
GLM-5.3 is available as an open-source model under the GLM-5.3 License license, meaning you can self-host it for predictable costs or use it through API providers like Swfte Connect.
Using GLM-5.3 with Swfte
Access GLM-5.3 through Swfte Connect, our unified LLM gateway. Connect gives you a single API for 50+ models, with automatic routing, cost optimization, and fallback handling. You can also try GLM-5.3 in our AI Playground before integrating.