GLM 5.3 Flash: API pricing, context window and capabilities

Prices from official vendor price lists · October 2026

GLM 5.3 Flash costs $0.075 per 1M input tokens and $0.25 per 1M output tokens, with a 1.31M context window. One of the cheapest models here — below 90% of the rating on output price. Suited to high volume, where a wrong answer is cheap to retry.

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Capabilities

API $/1M (in / out)

$0.075 / $0.25

Context window

1.31M tokens

Price / mo

API only

Overview Reviews

GLM 5.3 Flash is an AI model from Z.ai, priced at $0.075 input and $0.25 output per 1M tokens. That places it in the budget tier of this rating — cheaper than 90% of the 205 priced models listed.

It holds 1.31M tokens in a single conversation, enough for a full codebase or a contract bundle in one pass. Capabilities recorded in this rating: text & chat, vision, video, reasoning, tool calling. Access is through the API rather than a consumer subscription.

API price$0.075 / $0.25per 1M tokens, in / out

Context1.31M tokenstokens per conversation

VendorZ.aiall models from this vendor

TierBudgetcheaper than 90% of models

Cost calculator

1M tokens/mo10M tokens/mo50M tokens/mo200M tokens/mo

Standard$0.21~~AED 1 per month~~

With batch −50%$0.10~~AED 0 per month~~

With caching on input$0.19~~AED 1 per month~~

Standard$2.06~~AED 8 per month~~

With batch −50%$1.03~~AED 4 per month~~

With caching on input$1.89~~AED 7 per month~~

Standard$10.31~~AED 38 per month~~

With batch −50%$5.16~~AED 19 per month~~

With caching on input$9.47~~AED 35 per month~~

Standard$41.25~~AED 151 per month~~

With batch −50%$20.63~~AED 76 per month~~

With caching on input$37.88~~AED 139 per month~~

Assumes a 1:3 input-to-output ratio, which is typical for chat and generation. Dirham figures use 3.6725 per dollar. Batch and caching discounts apply where the vendor offers them.

Compared with alternatives

How GLM 5.3 Flash sits against its neighbours in this rating. Tap a card to open that model.

Nemotron 3.5 Lightning

Cheaper

NVIDIA

$0.08 / $0.2262.1K tokens

Granite 4.2 8B

Closest match

IBM

$0.06 / $0.25131.1K tokens

Qwen3.5-Flash

Step up

Alibaba (Qwen)

$0.065 / $0.261M tokens

Good and poor fit

Good fit

Multi-step analysis, planning and code review, where the first plausible answer is often wrong.
Reading screenshots, charts, scanned documents and photos.
Whole codebases, contract bundles and long transcripts in a single pass.

Poor fit

Long multi-step reasoning, where a larger model finishes in fewer attempts.

Related filters

Text & chat234 models for text generation and chat

Vision159 models that read images

Reasoning175 models that think before answering

Tool calling172 models that call your functions

Long context 1M+88 models holding 1M tokens or more

Z.ai12 models from this vendor

All 245 modelsThe full rating with filters and prices

Frequently asked questions

How much does GLM 5.3 Flash cost?

$0.075 / $0.25 per 1M tokens, input and output. In dirhams that is roughly AED 0.28 per 1M input tokens. Batch processing halves it where the vendor offers it.

What is the context window of GLM 5.3 Flash?

1.31M tokens in a single conversation.

What can GLM 5.3 Flash do?

In this rating it is recorded with: text & chat, vision, video, reasoning, tool calling, structured JSON output, long context 1M+, prompt caching, batch API, free tier, low latency, multilingual, open weights.

Is GLM 5.3 Flash a good choice?

It depends on the job. See the good-fit and poor-fit lists above, and compare against the neighbouring models before committing.

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