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 24 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 DeepInfra (OpenRouter)
$0.075 in / $0.25 out
Context window1,000,000
Max output131,072
Cache read$0.015 / M
ModalitiesText, Image, Video → Text
Priced across24 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
RelaceLowest
$0.07125$0.2375$0.01425-via OpenRouter
DeepInfra
$0.075$0.25$0.015-via OpenRouter
GMICloud
$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
Wafer
$0.1$0.35$0.02-via OpenRouter
Morph
$0.13$0.45$0.02-via OpenRouter
Makora
$0.14$0.47$0.024-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
DigitalOcean
$0.15$0.5$0.03-via OpenRouter
Fireworks AI
$0.15$0.5$0.03-via OpenRouter
Friendli
$0.15$0.5$0.03-via OpenRouter
Io-net
$0.15$0.5$0.03-via OpenRouter
NextBit
$0.15$0.5$0.03-via OpenRouter
Parasail
$0.15$0.5$0.03-via OpenRouter
Phala
$0.15$0.5$0.03-via OpenRouter
Reka
$0.15$0.5$0.03-via OpenRouter
Sail-research
$0.15$0.5$0.03-via OpenRouter
SiliconFlow
$0.15$0.5$0.03-via OpenRouter
StreamLake
$0.15$0.5$0.03-via OpenRouter
Together AI
$0.15$0.5$0.03-via OpenRouter
Venice
$0.15$0.5$0.03-via OpenRouter

Price history

Has this model gotten cheaper or more expensive?

EffectiveInput / OutputStatus
August 27, 2026 – August 30, 2026$0.15 / $0.5past
August 30, 2026$0.075 / $0.25current

More from Z.ai

Other models from the same provider.

GLM-5.3
z-ai/glm-5.3
$1.4 / $4.4 in / out per 1M
GLM-5.2
z-ai/glm-5.2
$0.966 / $3.04 in / out per 1M
GLM-5.1
z-ai/glm-5.1
$0.966 / $3.04 in / out per 1M
GLM-5
z-ai/glm-5
$0.6 / $1.92 in / out per 1M
GLM-5-Turbo
z-ai/glm-5-turbo
$1.2 / $4 in / out per 1M
GLM-4.7
z-ai/glm-4.7
$0.4 / $1.75 in / out per 1M

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Rates are generated from SuperPenguin's live pricing catalog.