How much does GLM-5.3-Flash cost per month?

For a chatbot handling 10,000 requests a day with 1,000 input and 500 output tokens each, GLM-5.3-Flash costs about $120.00 per month at Z.AI's list prices ($0.15 per 1M input tokens, $0.50 per 1M output tokens).

Does GLM-5.3-Flash support prompt caching?

Yes. Cached input costs $0.03 per 1M tokens, compared with $0.15 for regular input. Writing to the cache costs Free per 1M tokens.

How long is GLM-5.3-Flash's context window?

GLM-5.3-Flash accepts up to 1,000,000 tokens (1M) of context and returns up to 131,072 tokens per response.

GLM-5.3-Flash API Pricing

Z.AI · released Aug 26, 2026 · 1M context · API model ID glm-5.3-flash

GLM-5.3-Flash by Z.AI API pricing: $0.15 per 1M input tokens and $0.50 per 1M output tokens (provider list price via models.dev, Oct 10, 2026).

Prices

GLM-5.3-Flash prices, USD per 1M tokens
Price	USD per 1M tokens
Input	$0.15
Output	$0.50
Cache read	$0.03
Cache write	Free

Z.AI's list price for its own API, as compiled by models.dev and checked Oct 10, 2026, 09:00 UTC. Prices on cloud platforms and resellers can differ. Provider documentation

Estimated monthly cost

$120.00

per month

per day: $4.00
per request: $0.0004

Cost = input tokens × input price + output tokens × output price, 30 days a month. Cached input uses the cache read price. Cache write fees are not included.

Compare this workload across models

Monthly cost by workload

Workload	Per month
Chatbot1,000 in / 500 out tokens, 10,000 requests a day	$120.00/mo
RAG8,000 in / 500 out tokens, 5,000 requests a day	$217.50/mo
Coding agent50,000 in / 2,000 out tokens, 1,000 requests a day, 80% cached input	$111.00/mo

Context and capabilities

Context: 1,000,000 tokens
Max output: 131,072 tokens
Input: text, image, video, pdf
Output: text
Knowledge cutoff: Not published
Open weights: Yes
Tool calling: Yes
Reasoning: Yes
Structured outputs: Yes

Capabilities and limits as listed by models.dev.

Similarly priced models

Qwen3.8 Flash · $0.15 in / $0.47 out
Claude Haiku 5.5 · $0.10 in / $0.50 out
GPT-6 Luna · $0.10 in / $0.50 out
DeepSeek V4.1 Flash · $0.30 in / $1.20 out

Price history

No price changes since we started tracking on Oct 8, 2026.

Questions

How much does GLM-5.3-Flash cost per month?: For a chatbot handling 10,000 requests a day with 1,000 input and 500 output tokens each, GLM-5.3-Flash costs about $120.00 per month at Z.AI's list prices ($0.15 per 1M input tokens, $0.50 per 1M output tokens).
Does GLM-5.3-Flash support prompt caching?: Yes. Cached input costs $0.03 per 1M tokens, compared with $0.15 for regular input. Writing to the cache costs Free per 1M tokens.
How long is GLM-5.3-Flash's context window?: GLM-5.3-Flash accepts up to 1,000,000 tokens (1M) of context and returns up to 131,072 tokens per response.