GLM 5.3 Flash vs GLM 4.7 Flash

GLM 5.3 Flash and GLM 4.7 Flash side by side: specs, capabilities, parameters, and live pricing from the EmpirioLabs catalog.

Z.ai Text Generation

GLM 5.3 Flash vs GLM 4.7 Flash at a glance

GLM 5.3 Flash and GLM 4.7 Flash are both Z.ai models in the Text Generation category, available through the EmpirioLabs API.

Key differences

  • 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.
  • Capabilities listed only for GLM 5.3 Flash: vision, video understanding, document understanding.

GLM 5.3 Flash vs GLM 4.7 Flash: specs

SpecGLM 5.3 FlashGLM 4.7 Flash
Model IDglm-5-3-flashglm-4-7-flash
AuthorZ.aiZ.ai
ReleasedAug 26, 2026Jan 19, 2026
Context window1M tokens202.8K tokens
Max output131,072 tokens131,072 tokens
Input
Text Image Video File
Text
Output
Text
Text
Structured outputJSON ModeJSON Mode
RegionSingaporeSingapore
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
reasoning vision video understanding document understanding function calling web search
reasoning function calling web search

GLM 5.3 Flash vs GLM 4.7 Flash: API pricing

Live rates from the EmpirioLabs catalog for both models. Each rate card always matches what the API charges.

GLM 5.3 Flash vs GLM 4.7 Flash: API parameters

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.

ParameterGLM 5.3 FlashGLM 4.7 Flash
max_tokens1 to 131072 Default: 655361 to 131072 Default: 4096
temperature0 to 1 Default: 10 to 1 Default: 1
top_p0.01 to 1 Default: 0.950.01 to 1 Default: 0.95
reasoning_effortlow, high, max Default: max-
preserve_thinkingboolean Default: falseboolean Default: false
do_sampleboolean Default: trueboolean Default: true
tool_web_searchboolean Default: falseboolean Default: false
search_recency_filteroneDay, oneWeek, oneMonth, oneYear, noLimit Default: noLimitoneDay, oneWeek, oneMonth, oneYear, noLimit Default: noLimit
count1 to 50 Default: 101 to 50 Default: 10
search_domain_filterstringstring
search_promptstringstring
search_resultboolean Default: trueboolean Default: true
tool_streamboolean Default: falseboolean Default: false
toolsarray Default: []array
tool_choiceobjectauto Default: auto
stoparrayarray

GLM 5.3 Flash vs GLM 4.7 Flash: limits and notes

GLM 4.7 Flash

Base token use is free. Built-in web search is optional through tool_web_search and adds $0.033 per request when enabled.

How to call GLM 5.3 Flash and GLM 4.7 Flash

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
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 vs GLM 4.7 Flash: common questions

What is the difference between GLM 5.3 Flash and GLM 4.7 Flash?

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.

Which is newer, GLM 5.3 Flash or GLM 4.7 Flash?

GLM 5.3 Flash is the newer release (Aug 26, 2026); GLM 4.7 Flash was released on Jan 19, 2026.

Which has the lower rate, GLM 5.3 Flash or GLM 4.7 Flash?

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.

Can I switch between GLM 5.3 Flash and GLM 4.7 Flash without rebuilding my integration?

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.

Can I try GLM 5.3 Flash and GLM 4.7 Flash in the browser before integrating?

Yes. Open each model in the EmpirioLabs playground and run the same prompt on both, with the parameters the API exposes.

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