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
Todavía no está en nuestro gateway
GLM-5.3 es de pesos abiertos, así que puedes ejecutarlo tú mismo. Swfte Connect convierte tu despliegue en un endpoint gestionado que habla la misma API que el resto de modelos de este directorio.
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.