zai

ZAI: GLM 5.3 FlashX

z-ai/GLM-5.3-Flashx
Create account & add credits
Context

1M

Input

text, image, video

Output

text

Tool calling

Supported

About this model

GLM-5.3-FlashX is Z.AI's high-speed serving variant of GLM-5.3-Flash, designed for responsive coding, multimodal understanding, long-horizon agentic workflows, tool use, and long-context processing. It is built on the GLM-5.3-Flash foundation with 320B total parameters and 18B active parameters, using a hybrid architecture that combines sparse and linear attention for efficient long-context inference. FlashX supports a 1M-token context window, reasoning, function calling, and native multimodal understanding while prioritizing accelerated inference with generation speeds of up to 200 tokens per second.

Input modalities

text

Accepted as model input

image

Accepted as model input

video

Accepted as model input

Providers

Available routing options for this model through OneInfer.

Available

Input tokens

$0.370 / 1M tokens

Output tokens

$1.250 / 1M tokens

Routing

OneInfer optimized

Pricing

Current OneInfer pricing for this model.

UsagePrice
Input tokens$0.370 / 1M tokens
Output tokens$1.250 / 1M tokens
Cached input tokens$0.075 / 1M tokens

Performance & Benchmarks

Independent evaluations and live cluster operational metrics

We haven’t measured this model yet. Published academic results are under Academic Evaluations.

API Guide

API docs
  1. 1

    Generate your access token

    Use your API key to generate the JWT access token required by the Models API.

  2. 2

    Add the JWT token

    Copy the generated JWT token and replace JWT_TOKEN in the example below.

  3. 3

    Check your credits

    If your balance is too low, before calling the model.

  4. 4

    Run the API example

    Choose your preferred language, copy the example, and send your first model request.

    curl https://api.oneinfer.ai/v1/ula/chat/completions \
      -H "Authorization: Bearer $JWT_TOKEN" \
      -H "Content-Type: application/json" \
      -d '{
        "model": "z-ai/GLM-5.3-Flashx",
        "messages": [
          { "role": "user", "content": "Hello!" }
        ]
      }'

Community Model Reviews & Ratings

Verified visitor & developer evaluations on ZAI: GLM 5.3 FlashX's real-world intelligence, code accuracy, and speed

4.8
Community consensus rating
Top Community Consensus Tags:
Be the first to rate and tag this model's coding and reasoning strengths!

No community reviews yet

Be the first to share developer feedback on ZAI: GLM 5.3 FlashX's latency, code accuracy, and reliability in production.