GLM 5.3 Flash API Pricing & Quick Start

Intelligence	Speed	Input Price	Output Price	First-token latency
#55 / 696 42 Artificial Analysis Intelligence Index	#236 / 372 78.0 Output tokens per second (median)	#95 / 444 $0.15NT$ 5 USD / 1M tokens	#91 / 444 $0.50NT$ 16 USD / 1M tokens	#210 / 372 2.52s Time to first token (AA median)

Hosts & performance

Several hosts run this model. BazaarLink picks one by speed and stability and switches to the next if a host has trouble. The price is the same whichever host serves your request.

Zero data retention only

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Data: BazaarLink request statistics (refreshed every 5 minutes); hosts with too few requests use public monitoring data. Individual host prices are not shown.

GLM-5.3-Flash is a native multimodal model from Z.ai. It is suited for efficient coding and long-horizon agent tasks. Its hybrid sparse and linear attention architecture maintains accurate long-context behavior while...

Provider	Zhipu AI
Released	August 2026
Model ID	`z-ai/glm-5.3-flash`

Technical specifications

Context window

1M tokens

Reasoning

Yes

Input → Output

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Pricing comparison

BazaarLink retail price alongside AA's observed market standard.

BazaarLink price our site

Input$0.15NT$ 5

Output$0.50NT$ 16

Cache read$0.03NT$ 0.97

Cache write—

3:1 blended (est.)$0.24NT$ 8

All prices per 1M tokens. Supports TWD credit card / official invoice.

Market reference Artificial Analysis

Input$0.15

Output$0.50

Cache readAA not tracked

Cache writeAA not tracked

3:1 blended—

✓ Matches market reference — BazaarLink does not mark up.
Source: artificialanalysis.ai

Independent benchmarks

Scores below come from Artificial Analysis, an independent third party. BazaarLink does not participate in the testing.

Intelligence 42

Coding 72

Math

MMLU

GPQA

This modelCategory leader

Coding ability

#43out of 258 models

LiveCodeBench / SciCode and similar

Overall intelligence

#55out of 696 models

Aggregated across academic benchmarks

Time to first token

#210out of 372 models

AA 全球 p50：2.52 秒

Intelligence

Top 8%

This model

Category leader

Median

Coding

Top 17%

This model

Category leader

Median

Top 5 — CodingCoding Index leaderboard

1Claude Fable 5.1 (Max, Default Fallback)?/claude-fable-5-182$10 / $50

2Claude Fable 5.1 (Xhigh, Default Fallback)?/claude-fable-5-1-xhigh81$10 / $50

3Claude Fable 5.1 (High, Default Fallback)?/claude-fable-5-1-high79$10 / $50

4GPT-5.6 Sol (Xhigh)openai/gpt-5-6-sol-xhigh78$4 / $20

5Claude Opus 5 (Max)anthropic/claude-opus-578$5 / $25

AASource: Artificial Analysis · Independent third-party evaluation; not influenced by BazaarLinkView full evaluation on AA →

Quick Start

Use GLM 5.3 Flash via BazaarLink API — just change the base_url:

Python

from openai import OpenAI

client = OpenAI(
    base_url="https://api.bazaarlink.ai/v1",
    api_key="sk-bl-YOUR_API_KEY",
)

response = client.chat.completions.create(
    model="z-ai/glm-5.3-flash",
    messages=[{"role": "user", "content": "Hello!"}],
)
print(response.choices[0].message.content)

TypeScript

import OpenAI from "openai";

const client = new OpenAI({
  baseURL: "https://api.bazaarlink.ai/v1",
  apiKey: "sk-bl-YOUR_API_KEY",
});

const response = await client.chat.completions.create({
  model: "z-ai/glm-5.3-flash",
  messages: [{ role: "user", content: "Hello!" }],
});
console.log(response.choices[0].message.content);

Why use GLM 5.3 Flash via BazaarLink?

✓Clear usage records and itemized billing
✓OpenAI-compatible API — zero code changes required
✓When an upstream source has a problem, a request can try another available source. If none is available, the request returns an error.
✓Support resources for teams

Try Now ← All Models

Frequently Asked Questions

What is GLM 5.3 Flash?

How much does the GLM 5.3 Flash API cost?

GLM 5.3 Flash costs $0.15 per 1M input tokens and $0.50 per 1M output tokens when accessed through BazaarLink.

How do I use GLM 5.3 Flash with the OpenAI SDK?

Set base_url to "https://api.bazaarlink.ai/v1" and use model ID "z-ai/glm-5.3-flash". All OpenAI SDK methods (chat.completions, embeddings, streaming) work without code changes.

What is the context window for GLM 5.3 Flash?

GLM 5.3 Flash supports a context window of 1,000,000 tokens.

Is GLM 5.3 Flash available for free?

GLM 5.3 Flash is a paid model. BazaarLink offers free trial credits on registration so you can test it without a credit card.

Relay integrity checks

Tested endpoints: 40 runs
Independent hosts: 26
Model-family fingerprint match: 0%
Anomalies detected: 39 runs
Data range: past 90 days

BazaarLink Probe verifies endpoints that claim to serve this model and flags behavior that differs from the reference baseline.

View the full integrity report →