Z.ai

GLM-5.3-Flash

Z.ai's first natively multimodal GLM-5 model for visual coding and long-horizon agent work, with a 1M-token context window and always-on reasoning at Flash-tier rates.

ActiveReleased August 26, 2026Available from 10 providers
Tool callingCan invoke external tools and APIs (function calling) mid-response.Structured outputCan return JSON or schema-constrained responses instead of free text.ReasoningUses extended thinking / chain-of-thought for harder multi-step problems.Effort controlLets you dial thinking depth (low / medium / high) to trade cost for quality.Fine-tuningSupports training a custom variant on your own data (vendor fine-tune API or self-hosted open weights).

Source: Z.ai GLM-5.3-Flash model documentation, Z.ai GLM-5.3-Flash announcement, Z.ai GLM API pricing, Z.ai deep thinking documentation, Z.ai context caching documentation

Price per 1M tokens via GMICloud (OpenRouter)
$0.075 in / $0.25 out
Context window1,000,000
Max output131,072
Cache read$0.015 / M
ModalitiesText, Image, Video → Text
Priced across10 providers

Pricing

Every billing leg from the live catalog, in USD per 1M tokens.

Billing legRate
Input$0.075 / M
Output$0.25 / M
Cache read$0.015 / M

Cost calculator

Billing-grade math over the rate card above, including the thinking tokens most estimates miss.

Hidden reasoning tokens bill as output. 1.0x = thinking off. Medium-effort reasoning typically lands near 3x; heavy reasoning runs 6x to 8x. Set it to match your workload.

Estimated monthly cost
$30.00
at current list prices
Fresh input$15.00
Cached input$0.00
Output incl. thinking$15.00
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Compare providers

The same model, priced across every platform that serves it. Lowest combined in/out rate is flagged.

PlatformInput / MOutput / MCache read / MBatchAccess
GMICloudLowest
$0.075$0.25$0.015-via OpenRouter
Novita
$0.075$0.25$0.015-via OpenRouter
Z.ai
$0.075$0.25$0.015-via OpenRouter
Venice
$0.09375$0.3125$0.01875-via OpenRouter
Modal
$0.149985$0.49995$0.029997-via OpenRouter
Baseten
$0.15$0.5$0.03-via OpenRouter
Cloudflare
$0.15$0.5$0.03-via OpenRouter
DeepInfra
$0.15$0.5$0.03-via OpenRouter
Io-net
$0.15$0.5$0.03-via OpenRouter
Parasail
$0.15$0.5--via OpenRouter

Price history

Has this model gotten cheaper or more expensive?

No changePriced at $0.075 / $0.25 per 1M since August 27, 2026.

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Rates are generated from SuperPenguin's live pricing catalog.