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LLM Gateway

GLM-5.3 Flash (Gonka24) API

LLM Gateway
About

Build advanced reasoning agents with GLM-5.3 Flash (Gonka24), a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $0.15/1M input and $0.30/1M output tokens, native tool calling support, open weights architecture. Access GLM-5.3 Flash (Gonka24) via the LLM Gateway API with up to 16K output tokens.

Capabilities

Input Modalities

text

Output Modalities

text
Reasoning
Yes
Structured Output
Yes
Tool Use
Yes
WeightsOpen
Temperature
Adjustable
Attachment
Not Supported
Limits
Context Window
200K

Tokens

Input Limit
200K

Tokens

Max Output
16K

Tokens

Pricing

Standard (per 1M tokens)

Input
$0.15
Output
$0.30

Caching (per 1M tokens)

Read
$0.04
Frequently Asked Questions

GLM-5.3 Flash (Gonka24) by LLM Gateway costs $0.15 per 1M input tokens and $0.30 per 1M output tokens. Cached reads cost $0.04 per 1M tokens.

Model Details
ID
gonka24/glm-5.3-flash
Provider
LLM Gateway
Family
glm-flash
Release Date
Aug 26, 2026
Knowledge Cutoff
N/A
API Integration
NPM Package
@ai-sdk/openai-compatible
Environment Variables
LLMGATEWAY_API_KEY
API Base URL
https://api.llmgateway.io/v1
Documentation