GLM-5.3-FlashX API
NewLLMGLM-5.3-FlashX is Z.ai's speed-tuned Flash route with 1M context and tool use, positioned between Flash and GLM-5.3.
- Input · USD / 1M tokens$0.1 USDOfficial price
$0.5 USD - Output · USD / 1M tokens$0.5 USDOfficial price
$2.5 USD - Savings80%
- Context1M
- Last verified2026-10-24
- View tool pricing and billing rules
What are we making today?
Bring an idea, a question, or a first draft.
01
Where it fits
GLM-5.3-FlashX is Z.ai's speed-tuned Flash route with 1M context and tool use, positioned between Flash and GLM-5.3.
Choose FlashX for high-throughput coding and agent loops that want lower latency than Flash without flagship spend.
02
Model capabilities
Tool use
Can select and call tools in agent workflows that support structured tool use.
Fast responses
Optimized for responsive iteration and higher-volume agent tasks.
03
OpenAI-compatible API
Keep your client and change the base URL, API key, and model ID.
curl https://api.omniakey.com/v1/chat/completions \
-H "Authorization: Bearer $OMNIAKEY_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "glm-5.3-flashx",
"messages": [{"role": "user", "content": "Explain this codebase"}],
"stream": true
}'04
Compatible coding tools
More Z.ai models
Related articles
GLM-5.3-FlashX Review
FlashX sells lower waiting time, not a proven new intelligence tier, so its roughly 2.5x premium belongs only on latency-sensitive paths.
Read articleGLM-5.3 vs GLM-5.2 for Coding
GLM-5.3 keeps the GLM-5.2 base model and list price, but changes the coding decision through stronger post-training, new effort controls, and a breaking thinking-mode migration.
Read articleFrequently asked questions
How much does GLM-5.3-FlashX cost on OmniaKey?
OmniaKey currently charges $0.1 USD per 1M input tokens and $0.5 USD per 1M output tokens, in USD. Direct provider rates are separate and may change with input context length.
What is the context window for GLM-5.3-FlashX?
The listed context window is 1M. Actual usable limits can also depend on the client and upstream request format.
Which coding tools work with GLM-5.3-FlashX?
The current catalog lists compatibility with Claude Code, Codex, Cursor, Cline, Aider. Use the model ID shown on this page when the client supports model selection.