Z.ai: GLM 5.3

5 providers live

z-ai/glm-5.3

5 live providers
100% uptime
0.28 s first token
278 tok/s output

GLM-5.3 is a large-scale reasoning model from Z.ai, built for complex software engineering and long-horizon agent tasks. It supports text input and output with a 1M-token context window, and improves on GLM-5.2 in coding and in the balance between performance and token efficiency. Reasoning is always on and cannot be disabled. Reasoning efforts low, high, and max are supported; max is the default.

Context: 1M; tokens
Max output: 128K; tokens
Input: $0.98; per million tokens
Output: $3.08; per million tokens

Providers

Ranked by price and speed. Requests go to the best healthy provider, then fail over down the list.Benchmarks

Live providers of GLM 5.3, in the router's order
Who answers now	Input per 1M	First token
llm.buzzpicked	$0.98	2.48 s
Prime Intellect	$0.98	0.58 s
Alibaba	$1.19	1.72 s
ScalewayEU	$2.0743	0.28 s
Novita	$1.40	1.72 s

llm.buzz answers now: first in the router's order.

First token is the 24-hour median. If the pick fails, the next one answers at its own price.

#	Provider	Input	Output	Cache read	Latency	Throughput	Uptime (3d)
1	llm.buzzAutoNon-EU Data policy not declared	$0.98	$3.08	$0.182	2.48 s	161 tok/s	95.8%
2	Prime IntellectNon-EU Data policy not declared	$0.98	$3.08	$0.182	0.58 s	278 tok/s	100%
3	AlibabaNon-EU Data policy not declared	$1.19	$3.74	$0.238	1.72 s	65 tok/s	100%
4	ScalewayEU Data policy not declared	$2.0743	$6.3381	n/a	0.28 s	193 tok/s	100%
5	NovitaNon-EU Data policy not declared	$1.40	$4.40	$0.26	1.72 s	93 tok/s	100%

Want to serve this model?Become a provider

Price history

Input price since Oct 20, 2026, in USD per million tokens.

Alibaba
Prime Intellect
Novita
Scaleway

Data table

Provider	From	Input	Output
Alibaba	Oct 20, 2026	$1.19	$3.74
Prime Intellect	Oct 21, 2026	$1.40	$4.40
Prime Intellect	Oct 23, 2026	$0.98	$3.08
Novita	Oct 21, 2026	$1.40	$4.40
Scaleway	Oct 21, 2026	$2.0793	$6.3533
Scaleway	Oct 22, 2026	$2.0828	$6.3641
Scaleway	Oct 22, 2026	$2.0775	$6.3477
Scaleway	Oct 23, 2026	$2.0752	$6.3409
Scaleway	Oct 26, 2026	$2.0743	$6.3381

Performance

Last 24 hours, from llm.buzz's test requests

Throughput (tok/s)

llm.buzz161 tok/s
Prime Intellect278 tok/s
Alibaba65 tok/s
Scaleway193 tok/s
Novita93 tok/s

Data table

Provider	From (UTC)	p50	p90	p99
llm.buzz	Oct 26, 06:00	161 tok/s	161 tok/s	161 tok/s
llm.buzz	Last 24 hours	161 tok/s	161 tok/s	161 tok/s
Prime Intellect	Oct 26, 09:00	334 tok/s	334 tok/s	334 tok/s
Prime Intellect	Oct 26, 14:00	278 tok/s	278 tok/s	278 tok/s
Prime Intellect	Oct 26, 18:00	278 tok/s	278 tok/s	278 tok/s
Prime Intellect	Oct 26, 23:00	161 tok/s	161 tok/s	161 tok/s
Prime Intellect	Oct 27, 03:00	278 tok/s	278 tok/s	278 tok/s
Prime Intellect	Last 24 hours	278 tok/s	161 tok/s	161 tok/s
Alibaba	Oct 26, 07:00	65 tok/s	65 tok/s	65 tok/s
Alibaba	Oct 26, 12:00	54 tok/s	54 tok/s	54 tok/s
Alibaba	Oct 26, 16:00	65 tok/s	65 tok/s	65 tok/s
Alibaba	Oct 26, 20:00	78 tok/s	78 tok/s	78 tok/s
Alibaba	Oct 27, 01:00	54 tok/s	54 tok/s	54 tok/s
Alibaba	Last 24 hours	65 tok/s	54 tok/s	54 tok/s
Scaleway	Oct 26, 08:00	161 tok/s	161 tok/s	161 tok/s
Scaleway	Oct 26, 12:00	193 tok/s	193 tok/s	193 tok/s
Scaleway	Oct 26, 17:00	193 tok/s	193 tok/s	193 tok/s
Scaleway	Oct 26, 21:00	134 tok/s	134 tok/s	134 tok/s
Scaleway	Oct 27, 02:00	334 tok/s	334 tok/s	334 tok/s
Scaleway	Last 24 hours	193 tok/s	134 tok/s	134 tok/s
Novita	Oct 26, 06:00	93 tok/s	93 tok/s	93 tok/s
Novita	Oct 26, 10:00	112 tok/s	112 tok/s	112 tok/s
Novita	Oct 26, 14:00	112 tok/s	112 tok/s	112 tok/s
Novita	Oct 26, 19:00	93 tok/s	93 tok/s	93 tok/s
Novita	Oct 26, 23:00	93 tok/s	93 tok/s	93 tok/s
Novita	Oct 27, 04:00	93 tok/s	93 tok/s	93 tok/s
Novita	Last 24 hours	93 tok/s	93 tok/s	93 tok/s

Latency (time to first token)

llm.buzz2.48 s
Prime Intellect0.58 s
Alibaba1.72 s
Scaleway0.28 s
Novita1.72 s

Data table

Provider	From (UTC)	p50	p90	p99
llm.buzz	Oct 26, 06:00	2.48 s	2.48 s	2.48 s
llm.buzz	Last 24 hours	2.48 s	2.48 s	2.48 s
Prime Intellect	Oct 26, 09:00	0.58 s	0.58 s	0.58 s
Prime Intellect	Oct 26, 14:00	0.58 s	0.58 s	0.58 s
Prime Intellect	Oct 26, 18:00	1.44 s	1.44 s	1.44 s
Prime Intellect	Oct 26, 23:00	0.58 s	0.58 s	0.58 s
Prime Intellect	Oct 27, 03:00	0.69 s	0.69 s	0.69 s
Prime Intellect	Last 24 hours	0.58 s	1.44 s	1.44 s
Alibaba	Oct 26, 07:00	1.44 s	1.44 s	1.44 s
Alibaba	Oct 26, 12:00	1.72 s	1.72 s	1.72 s
Alibaba	Oct 26, 16:00	2.07 s	2.07 s	2.07 s
Alibaba	Oct 26, 20:00	1.72 s	1.72 s	1.72 s
Alibaba	Oct 27, 01:00	10.7 s	10.7 s	10.7 s
Alibaba	Last 24 hours	1.72 s	10.7 s	10.7 s
Scaleway	Oct 26, 08:00	0.28 s	0.28 s	0.28 s
Scaleway	Oct 26, 12:00	0.40 s	0.40 s	0.40 s
Scaleway	Oct 26, 17:00	0.33 s	0.33 s	0.33 s
Scaleway	Oct 26, 21:00	0.28 s	0.28 s	0.28 s
Scaleway	Oct 27, 02:00	0.23 s	0.23 s	0.23 s
Scaleway	Last 24 hours	0.28 s	0.40 s	0.40 s
Novita	Oct 26, 06:00	1.72 s	1.72 s	1.72 s
Novita	Oct 26, 10:00	1.72 s	1.72 s	1.72 s
Novita	Oct 26, 14:00	1.72 s	1.72 s	1.72 s
Novita	Oct 26, 19:00	1.00 s	1.00 s	1.00 s
Novita	Oct 26, 23:00	1.72 s	1.72 s	1.72 s
Novita	Oct 27, 04:00	1.72 s	1.72 s	1.72 s
Novita	Last 24 hours	1.72 s	1.72 s	1.72 s

Uptime

Last 72 hours, by hour

Best provider 100%

This model

llm.buzz

Prime Intellect

Alibaba

Scaleway

Novita

Up: 95% or more served
Degraded: 85% to 95%
Down: below 85%
No data
From llm.buzz's test requests

Questions

How much does Z.ai: GLM 5.3 cost?

Z.ai: GLM 5.3 costs $0.98 per million input tokens and $3.08 per million output tokens at llm.buzz, the provider requests go to first, with cache reads at $0.182 per million tokens. Each provider sets its own price, and you pay the price of the provider that answered.

Do providers train on my prompts?

Each provider declares it, and the table above shows every declaration. You can limit a request to providers that keep nothing, or to providers in the EU.

Can I serve Z.ai: GLM 5.3 myself?

Yes. Apply as a provider, add your endpoint and list this model at your price. It goes live once the automated check passes.

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Call it

import os
from openai import OpenAI

client = OpenAI(
    base_url="https://api.llm.buzz/api/v1",
    api_key=os.environ["LLM_BUZZ_KEY"],
)
reply = client.chat.completions.create(
    model="z-ai/glm-5.3",
    messages=[{"role": "user", "content": "Hello"}],
)

import OpenAI from "openai";

const client = new OpenAI({
  baseURL: "https://api.llm.buzz/api/v1",
  apiKey: process.env.LLM_BUZZ_KEY,
});
const reply = await client.chat.completions.create({
  model: "z-ai/glm-5.3",
  messages: [{ role: "user", content: "Hello" }],
});

curl https://api.llm.buzz/api/v1/chat/completions \
  -H "Authorization: Bearer $LLM_BUZZ_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "z-ai/glm-5.3",
       "messages": [{"role": "user", "content": "Hello"}]}'

Endpoints

POST /api/v1/chat/completionsPOST /api/v1/responsesPOST /api/v1/messages

Authentication

Send your llm.buzz key as a Bearer token: Authorization: Bearer $LLM_BUZZ_KEY. Create keys in the console. The same key calls every model; each request pays the price of the provider that answered it.

More in Authentication and the API reference.

Call Z.ai: GLM 5.3 with one keyEach request pays the price of the provider that answered it.

Get API key

Z.ai: GLM 5.3

Providers

Price history

Performance

Throughput (tok/s)

Latency (time to first token)

Uptime

Questions

Similar models

Call it

Authentication

README