

GLM 5.3 Flash and GLM 4.7 Flash side by side: specs, capabilities, parameters, and live pricing from the EmpirioLabs catalog.
GLM 5.3 Flash and GLM 4.7 Flash are both Z.ai models in the Text Generation category, available through the EmpirioLabs API.
| Spec | GLM 5.3 Flash | GLM 4.7 Flash |
|---|---|---|
| Model ID | glm-5-3-flash | glm-4-7-flash |
| Author | Z.ai | Z.ai |
| Released | Aug 26, 2026 | Jan 19, 2026 |
| Context window | 1M tokens | 202.8K tokens |
| Max output | 131,072 tokens | 131,072 tokens |
| Input | Text Image Video File | Text |
| Output | Text | Text |
| Structured output | JSON Mode | JSON Mode |
| Region | Singapore | Singapore |
| Endpoints | POST /v1/chat/completions POST /v1/responses POST /v1/messages POST /v1beta/models/glm-5-3-flash:generateContent | POST /v1/chat/completions POST /v1/responses POST /v1/messages POST /v1beta/models/glm-4-7-flash:generateContent |
| Capabilities |
Live rates from the EmpirioLabs catalog for both models. Each rate card always matches what the API charges.
Request parameters each model lists on EmpirioLabs, with the allowed values or range where one applies. A dash marks a parameter the model does not list.
| Parameter | GLM 5.3 Flash | GLM 4.7 Flash |
|---|---|---|
| max_tokens | 1 to 131072 Default: 65536 | 1 to 131072 Default: 4096 |
| temperature | 0 to 1 Default: 1 | 0 to 1 Default: 1 |
| top_p | 0.01 to 1 Default: 0.95 | 0.01 to 1 Default: 0.95 |
| reasoning_effort | low, high, max Default: max | - |
| preserve_thinking | boolean Default: false | boolean Default: false |
| do_sample | boolean Default: true | boolean Default: true |
| tool_web_search | boolean Default: false | boolean Default: false |
| search_recency_filter | oneDay, oneWeek, oneMonth, oneYear, noLimit Default: noLimit | oneDay, oneWeek, oneMonth, oneYear, noLimit Default: noLimit |
| count | 1 to 50 Default: 10 | 1 to 50 Default: 10 |
| search_domain_filter | string | string |
| search_prompt | string | string |
| search_result | boolean Default: true | boolean Default: true |
| tool_stream | boolean Default: false | boolean Default: false |
| tools | array Default: [] | array |
| tool_choice | object | auto Default: auto |
| stop | array | array |
Base token use is free. Built-in web search is optional through tool_web_search and adds $0.033 per request when enabled.
GLM 5.3 Flash serves the OpenAI-compatible Chat Completions API. Point any OpenAI SDK at https://api.empiriolabs.ai/v1 with your EmpirioLabs API key and use the model id glm-5-3-flash. Both models are called through the same endpoint. Set model to glm-5-3-flash or glm-4-7-flash. Get an API key from the EmpirioLabs dashboard.
curl https://api.empiriolabs.ai/v1/chat/completions \
-H "Authorization: Bearer $EMPIRIOLABS_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "glm-5-3-flash",
"messages": [
{"role": "user", "content": "Write a haiku about the ocean."}
]
}'GLM 5.3 Flash is the newer release (Aug 26, 2026); GLM 4.7 Flash was released on Jan 19, 2026. GLM 5.3 Flash has the larger context window: 1M tokens, against 202.8K for GLM 4.7 Flash. Input types only GLM 5.3 Flash accepts: File, Image, Video. The specs, rate cards, and parameters on this page come from the live EmpirioLabs catalog.
GLM 5.3 Flash is the newer release (Aug 26, 2026); GLM 4.7 Flash was released on Jan 19, 2026.
The two models are priced on different units or tiers, so compare the live rate cards on this page. They always match what the API charges.
Yes. Both models use POST /v1/chat/completions with the same EmpirioLabs API key, so most integrations switch by changing the model value. Check the parameters table on this page first if you rely on a model-specific parameter.
Yes. Open each model in the EmpirioLabs playground and run the same prompt on both, with the parameters the API exposes.
Check out our pricing or reach out if you want your own model deployed on our stack.