glm-5.3-flash
Z.AI/Open weights/3 providers
GLM-5.3-Flash is a native multimodal model from Z.ai, suited for efficient coding and long-horizon agent tasks. Its hybrid sparse and linear attention architecture maintains accurate long-context behavior while reducing compute overhead. Accepts text, image and video input.MoreLess
Which id to call
glm-5.3-flashRequesty routes this id across every provider serving glm-5.3-flash, picking on price and health and failing over automatically. The id stays valid when a provider changes underneath it.
From /1M input
$0.14
$0.15 list
DeepInfra Inc.
Context
1.0M
131K output
Endpoints
3
1 region
Regions
1
chat
Capabilities 5/8
3 endpoints / 1 region
Providers serving glm-5.3-flash
Provider prices, per 1M tokens. Pay as you go adds 5%, or 0% on your own keys.
| Rank | Privacy | ||||||
|---|---|---|---|---|---|---|---|
| 1 |  DeepInfra Inc.10% off | Global | 1.0M | $0.15$0.14 | $0.50$0.45 | $0.03 | zdr |
| 2 |  Novita AI10% off | Global | 1.0M | $0.15$0.14 | $0.50$0.45 | $0.03 | zdr |
| 3 | Z.ai55% off until 9 Sep 2026 | Global | 1M | $0.30$0.14 | $1.00$0.45 | $0.03 | zdr |
A column is blank where no qualifying sample exists, and every row links to that provider's endpoint page.
model=
Which id to call
One base url, https://router.requesty.ai/v1, and one key for every id here.
glm-5.3-flashRequesty routes this id across every provider serving glm-5.3-flash, picking on price and health and failing over automatically. The id stays valid when a provider changes underneath it.
OpenAI compatible
Call it in three lines
Change the base url, use your Requesty key, set the model to any id on the left. Existing OpenAI SDK code needs no other edit.
123456789101112131415from openai import OpenAI client = OpenAI( api_key="YOUR_REQUESTY_API_KEY", base_url="https://router.requesty.ai/v1", ) response = client.chat.completions.create( model="glm-5.3-flash", messages=[ {"role": "user", "content": "Explain quantum computing in one paragraph."}, ], ) print(response.choices[0].message.content)
6
More from Z.AI
Reference
glm-5.3-flash questions
Which providers serve glm-5.3-flash?
glm-5.3-flash is available from 3 providers through Requesty: DeepInfra Inc., Novita AI, Z.ai. All endpoints share one OpenAI-compatible API and one key, and Requesty fails over between them automatically.
How much does glm-5.3-flash cost?
Pricing starts at $0.14 per million input tokens and $0.45 per million output tokens on DeepInfra Inc., the cheapest endpoint. Prices vary by provider and region; the table above shows every endpoint. Those are the upstream provider rates: pay as you go adds 5% on top, or 0% if you bring your own provider keys.
Is glm-5.3-flash open weights?
Yes. glm-5.3-flash is an open-weights model from Z.AI, which is why multiple inference providers can host it. Provider choice affects price, latency, and data-privacy terms, all compared above.
What is the context window of glm-5.3-flash?
glm-5.3-flash supports up to 1.0M tokens of context, with up to 131K output tokens per response. Some providers expose a smaller window; check the per-endpoint context column above.
How do I use glm-5.3-flash with the OpenAI SDK?
Install the OpenAI SDK, set base_url to "https://router.requesty.ai/v1", set your API key to your Requesty key, and set the model to "glm-5.3-flash" or any endpoint id from the table above. The quickstart section shows Python, JavaScript and cURL snippets.
Should I call glm-5.3-flash by its managed id or a provider id?
Use the managed id, "glm-5.3-flash". Requesty picks which of the 3 providers serves each request based on price and health, and fails over when one degrades, so the id keeps working while the routing changes underneath it. Send a provider id like "deepinfra/glm-5.3-flash" only when you need one specific deployment and want no failover.
Route glm-5.3-flash through one endpoint
One key for 3 providers on this model and 600+ others. No markup on provider prices, automatic failover, caching built in.