GLM-5.3 Flash

Lightweight GLM-5.3 variant for efficient coding and long-horizon agent tasks with a 1M context window.

1,048,576 context
Released August 26, 2026
Starting at $0.07/M (20% off) input tokens
Starting at $0.20/M (20% off) output tokens
Streaming
Vision
Tools
Reasoning
Reasoning Budget
JSON Output
Structured JSON
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All Providers for GLM-5.3 Flash

LLM Gateway routes requests to the best providers that are able to handle your prompt size and parameters.

Context: 262.1kQuant: fp830% off
Input
$0.15$0.105
/M tokens
Cache Read
$0.015$0.0105
/M tokens
Output
$0.5$0.35
/M tokens
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Context: 1.0MQuant: fp410% off
Input
$0.1$0.09
/M tokens
Cache Read
$0.0175$0.0158
/M tokens
Output
$0.35$0.315
/M tokens
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Context: 1.0MQuant: fp4
Input
$0.09
/M tokens
Cache Read
$0.02
/M tokens
Output
$0.28
/M tokens
Get Started
Context: 1.0M
Input
$0.15
/M tokens
Cache Read
$0.03
/M tokens
Output
$0.5
/M tokens
Get Started
Context: 1.0M
Input
$0.15
/M tokens
Cache Read
$0.03
/M tokens
Output
$0.5
/M tokens
Get Started
Context: 200kQuant: fp8
Input
$0.15
/M tokens
Cache Read
$0.035
/M tokens
Output
$0.3
/M tokens
Get Started
Context: 1.0MQuant: fp810% off
Input
$0.15$0.135
/M tokens
Cache Read
$0.03$0.027
/M tokens
Output
$0.5$0.45
/M tokens
Get Started
Context: 1.0M
Input
$0.1
/M tokens
Cache Read
$0.02
/M tokens
Output
$0.25
/M tokens
Get Started
Context: 1M
Input
$0.15
/M tokens
Cache Read
$0.03
/M tokens
Output
$0.5
/M tokens
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Context: 1.0MQuant: fp820% off
Input
$0.088$0.0704
/M tokens
Cache Read
$0.025$0.02
/M tokens
Output
$0.25$0.2
/M tokens
Get Started
Context: 1.0MQuant: fp8
Input
$0.15
/M tokens
Cache Read
$0.03
/M tokens
Output
$0.5
/M tokens
Get Started

Frequently asked questions

What is GLM-5.3 Flash?

Lightweight GLM-5.3 variant for efficient coding and long-horizon agent tasks with a 1M context window. You can access it through LLM Gateway's OpenAI-compatible API with automatic provider routing, fallback, and cost analytics.

How much does GLM-5.3 Flash cost?

Pricing for GLM-5.3 Flash on LLM Gateway starts at $0.09 per million input tokens and $0.25 per million output tokens, depending on the provider. The pricing table above always reflects the current per-provider rates.

What is the context length of GLM-5.3 Flash?

GLM-5.3 Flash supports a context window of up to 1,048,576 tokens on its largest provider deployment.

Which providers serve GLM-5.3 Flash?

GLM-5.3 Flash is served by Reka AI, Entrim, Inference.net, Fireworks AI, Together AI, Gonka24, NovitaAI, Consensus Protocol, Runware, SCX.ai, Z AI through LLM Gateway. Requests are automatically routed to the best available provider, with fallback when a provider has issues.

Does GLM-5.3 Flash support tool calling and structured outputs?

Yes. GLM-5.3 Flash supports both tool (function) calling and strict JSON output schema (upstream-enforced) through LLM Gateway.

When was GLM-5.3 Flash released?

GLM-5.3 Flash was released on August 26, 2026.