GLM-5.3 Flash
Released 26 Aug 2026 under a straight MIT licence and, on price per unit of measured intelligence, the strongest value on the board. A 320B-parameter MoE with 18B active, scoring 42 on the Artificial Analysis Intelligence Index v4.3 — three points behind its own 753B flagship GLM-5.3, at $0.15/$0.50 against that model's $1.40/$4.40. That is roughly a tenth of the input cost for 93% of the score. It is also the open-weight model most teams can realistically self-host: 320B total is demanding but not rack-scale in the way Kimi K3's 2.8T is, and the 18B active count keeps inference cheap. 1M context, text and image in, text out, 117.2 tokens/second, 18 API providers. One caveat: Artificial Analysis flags it 'very verbose' at 180M output tokens across the index against a 140M median, so budget output tokens at roughly 1.3x what the headline rate implies.
1M
tokens
66K
tokens
$0.15
per 1M tokens
$0.5
per 1M tokens
117
tokens/sec
Aug 2026
2026-08-26
$0.33
per 1M tokens
286.2
quality per $
Capabilities
Benchmarks
Price vs Quality
Context Window in Context
- ▸ GLM-5.3 Flash1M
- 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 MIT
Todavía no está en nuestro gateway
GLM-5.3 Flash 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-flash",
"messages": [{"role": "user", "content": "Hello"}]
}'About GLM-5.3 Flash
GLM-5.3 Flash is a open-source AI model by Z.ai (Zhipu AI), released on August 26, 2026. It supports a context window of 1000K tokens and can generate up to 66K output tokens.
At $0.15 per million input tokens and $0.5 per million output tokens, its blended cost of $0.33/1M tokens makes it one of the most affordable models available. Its value score of 286.2 reflects the balance of quality and cost.
GLM-5.3 Flash is available as an open-source model under the MIT license, meaning you can self-host it for predictable costs or use it through API providers like Swfte Connect.
Using GLM-5.3 Flash with Swfte
Access GLM-5.3 Flash 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 Flash in our AI Playground before integrating.