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 are watched for changes and checked against the provider's own page.
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.