Z.ai

GLM-5.1

The prior GLM-5 flagship with hybrid thinking, strong for coding and agents, available across inference gateways.

ActiveAvailable from 22 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.

Source: Z.ai GLM API pricing, Z.ai GLM models

Price per 1M tokens via StreamLake (OpenRouter)
$0.966 in / $3.04 out
Context window204,800
Max output131,072
Cache read$0.1794 / M
ModalitiesText → Text
Priced across22 providers

Pricing

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

Billing legRate
Input$0.966 / M
Output$3.04 / M
Cache read$0.1794 / 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
$375
at current list prices
Fresh input$193
Cached input$0.00
Output incl. thinking$182
Track this automatically →

Compare providers

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

PlatformInput / MOutput / MCache read / MBatchAccess
StreamLakeLowest
$0.966$3.04$0.1794—via OpenRouter
Baidu
$0.98$3.08$0.182—via OpenRouter
Chutes
$0.98$3.08$0.49—via OpenRouter
GMICloud
$0.98$3.08$0.182—via OpenRouter
Wafer
$1$3.2$0.1—via OpenRouter
DeepInfra
$1.05$3.5$0.205—via OpenRouter
SiliconFlow
$1.19$3.74$0.6—via OpenRouter
AtlasCloud
$1.26$3.96$0.234—via OpenRouter
DigitalOcean
$0.975$4.3$0.26—via OpenRouter
Phala
$1.21$4.2$0.6—via OpenRouter
Baseten
$1.3$4.3$0.26—via OpenRouter
Novita
$1.38$4.4$0.26—via OpenRouter
Together AI
$1.4$4.4$0.26—Direct
Fireworks AI
$1.4$4.4$0.26✓Direct
Fireworks AI
$1.4$4.4$0.26—via OpenRouter
Friendli
$1.4$4.4$0.26—via OpenRouter
Nebius
$1.4$4.4——via OpenRouter
Parasail
$1.4$4.4$0.26—via OpenRouter
Together AI
$1.4$4.4$0.26—via OpenRouter
Z.ai
$1.4$4.4$0.26—via OpenRouter
Azure AI Foundry (Fireworks)
$1.54$4.84$0.286—Direct
Venice
$1.54$4.84$0.286—via OpenRouter

Price history

Has this model gotten cheaper or more expensive?

No changePriced at $0.966 / $3.04 per 1M since July 10, 2026.

More from Z.ai

Other models from the same provider.

GLM-5.2
z-ai/glm-5.2
$0.546 / $1.72 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
GLM-4.7-Flash
z-ai/glm-4.7-flash
$0.06 / $0.4 in / out per 1M
GLM-4.6
z-ai/glm-4.6
$0.43 / $1.74 in / out per 1M

Stop estimating. Track it.

SuperPenguin meters every GLM-5.1 call your team makes, prices it with this exact rate card, and shows spend by feature, customer, and team.

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Rates are generated from SuperPenguin's live pricing catalog.