GLM 5.3 Flash
z-ai/glm-5.3-flashZ.AI~z-ai/glm-flash-latestoperationalZhipu GLM-5.3-Flash: fast, low-cost model for high-volume workloads.
Official pricing
USD per million tokens, exactly what Z.AI publishes. ElevenRouter adds no markup on tokens.
Example: 1,000 input + 500 output tokens ≈ $0.00040. Zero-completion responses are never charged.
Specs
- Context
- 1M
- Max output
- 64K
- Modalities
- text->text
- Tokenizer
- GLM
- Released
- 2026-09-20
- Family
- glm-flash
Availability on ElevenRouter
Measured by the routing engine; up when at least one credential can serve the model.
Observed performance
Real requests over the last 7 days (2 samples).
- Time to first token p50
- —
- p95
- —
- Output tokens/s p50
- —
- p95
- —
Percentiles appear after five successful requests.
Usage on ElevenRouter
Tokens per day across all customers (anonymous, aggregate).
Use it
Any OpenAI or Anthropic SDK works by changing the base URL. Supported parameters: max_tokens, temperature, top_p, top_k, frequency_penalty, presence_penalty, repetition_penalty, seed, stop, tools, tool_choice, response_format, reasoning, include_reasoning.
curl https://elevenrouter.com/api/v1/chat/completions \
-H "Authorization: Bearer $ELEVENROUTER_API_KEY" \
-H "Content-Type: application/json" \
-d '{ "model": "z-ai/glm-5.3-flash", "messages": [{ "role": "user", "content": "Hello" }] }'Related models
- Hunyuan Hy3 · Tencent$0.132 / $0.528
- GPT-5.6 Luna · OpenAI$0.200 / $1.20
- DeepSeek V4.1 Flash · DeepSeek$0.300 / $1.20
- DeepSeek V4 Flash · DeepSeek$0.440 / $1.32
- DeepSeek V4 Pro · DeepSeek$1.32 / $3.96
- Claude Haiku 4.5 · Anthropic$1.00 / $5.00
Frequently asked questions
How much does GLM 5.3 Flash cost on ElevenRouter?
GLM 5.3 Flash is billed at Z.AI's official list price: $0.150 per million input tokens and $0.500 per million output tokens, with cached input at $0.030. A request with 1,000 input and 500 output tokens costs about $0.00040.
What is the context length of GLM 5.3 Flash?
GLM 5.3 Flash accepts up to 1M tokens of context and can produce up to 64K output tokens.
Does GLM 5.3 Flash support tool calling and structured outputs?
Yes, tool calling is supported and JSON mode is available; add the response-healing plugin for schema validation. Supported parameters: max_tokens, temperature, top_p, top_k, frequency_penalty, presence_penalty, repetition_penalty, seed, stop, tools, tool_choice, response_format, reasoning, include_reasoning.
How do I call GLM 5.3 Flash?
Send an OpenAI-compatible chat completion to https://elevenrouter.com/api/v1/chat/completions with "model": "z-ai/glm-5.3-flash" and your ElevenRouter key, or use the Anthropic Messages endpoint. Any OpenAI or Anthropic SDK works by changing the base URL.
Is GLM 5.3 Flash available right now?
Availability is measured continuously by the routing engine. Current status: operational, 95.49% uptime over the last 30 days. When one credential fails, requests fail over to another automatically.