Model Details
Released
Sep 18, 2026
Context Length
1,048,576
Max Output
131,072
Modalities
Text
Image
→
Text
Capabilities
Tool use
Structured outputs
Prompt caching
Code execution
Open weights
Where is GLM 5.3 FlashX a perfect fit?
GLM-5.3-FlashX is Z.ai’s high-speed serving variant of GLM-5.3-Flash, delivering the same multimodal intelligence with substantially faster inference for coding, agents, visual workflows, and production applications. Z.ai describes it as an inference/serving optimization of GLM-5.3-Flash, with reported peak speeds of up to 200 tokens/second.
- Low-latency coding assistants
- High-throughput autonomous agents
- Visual coding and screenshot understanding
- Browser and computer-use workflows
- Long-context document processing
- Tool-calling applications
- Real-time research and information processing
- Production applications where inference latency is important
GLM-5.3-FlashX is best treated as the high-speed serving variant of GLM-5.3-Flash, not as a separate foundation model. Its primary differentiator is latency and throughput while retaining the 320B/18B architecture, 1M-token context and multimodal capabilities of Flash.
- Low-latency coding assistants
- High-throughput autonomous agents
- Visual coding and screenshot understanding
- Browser and computer-use workflows
- Long-context document processing
- Tool-calling applications
- Real-time research and information processing
- Production applications where inference latency is important
GLM-5.3-FlashX is best treated as the high-speed serving variant of GLM-5.3-Flash, not as a separate foundation model. Its primary differentiator is latency and throughput while retaining the 320B/18B architecture, 1M-token context and multimodal capabilities of Flash.
Quick Model Estimate
Your GLM 5.3 FlashX Cost Estimate
💰 Total Cost
—
for 1000 input + 1000 output tokens
📥 Input (1000 × $0.370000)
—
📤 Output (1000 × $1.250000)
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Cost Breakdown
📥 Input
📤 Output
Prices updated daily from official provider data.
Pricing
Other Models in the GLM-5.3 Family
FAQs about GLM 5.3 FlashX
How much does GLM 5.3 FlashX cost per 1M tokens?
GLM 5.3 FlashX costs $0.37 per million input tokens, and $1.25 per million output tokens.
What does a typical workload cost with GLM 5.3 FlashX?
1,000 requests of 2,000 input and 500 output tokens each — 2,000,000 input and 500,000 output tokens in total — costs $1.365 with GLM 5.3 FlashX at its lowest rates. Use the calculator on this page for your own volumes.
Where can I use GLM 5.3 FlashX?
GLM 5.3 FlashX is available through Z.ai, from $0.37 per million input tokens.
What is GLM 5.3 FlashX's context window?
GLM 5.3 FlashX has a context window of 1,048,576 tokens, and returns up to 131,072 tokens in a single response.
What input types does GLM 5.3 FlashX support?
GLM 5.3 FlashX accepts text and image input, and returns text.