GLM 5.3 Flashx

GLM 5.3 Flashx by Z.AI, available on Aether API through one OpenAI-compatible API key. Priced at $0.259/M input, $0.875/M output. 1M context window.

Pricing

Provider	Z.AI
Model ID	glm-5.3-flashx
Endpoint	https://aetherapi.dev/v1/chat/completions
Context window	1M
Cached input	$0.063/1M tokens
Input	$0.259/1M tokens
Output	$0.875/1M tokens
Official provider price	$0.37/1M input · $1.25/1M output

Supported endpoints

• POST https://aetherapi.dev/v1/chat/completions

How to call it

Send a request to https://aetherapi.dev/v1/chat/completions with your Aether API key:

curl https://aetherapi.dev/v1/chat/completions \
  -H "Authorization: Bearer sk-aetherapi-..." \
  -H "Content-Type: application/json" \
  -d '{"model":"glm-5.3-flashx","messages":[{"role":"user","content":"Hello"}]}'

Related

Compare this model against every other model on the models page, or see Aether API pricing and the chat completions reference.