OpenAI compatible API · Attested · Public status

Z.ai: GLM 5.2 vs Google: Gemma 4 31B

Compare Z.ai: GLM 5.2 and Google: Gemma 4 31B by providers, context, price, and TrustedRouter route support.

Verify gateway

Onebase URL to migrate

100sof models and routes

Noneprompt logs by default

Compare routesProviders, price, context, and policy posture in one view.

Use auto when uptime mattersKeep a primary model and let fallback handle provider failures.

Same API shapeUse the OpenAI client and set the model you want.

Practical read

Google: Gemma 4 31B has the lower cheapest prompt+completion route on TrustedRouter. Z.ai: GLM 5.2 has more provider fallback routes, while Z.ai: GLM 5.2 has the larger context window. Current TrustedRouter probes show Google: Gemma 4 31B with the lower p50 TTFT.

$2.07942/1MZ.ai: GLM 5.2 cheapest route

$0.5355/1MGoogle: Gemma 4 31B cheapest route

1832 msZ.ai: GLM 5.2 measured p50 TTFT

896 msGoogle: Gemma 4 31B measured p50 TTFT

Z.ai: GLM 5.2Google: Gemma 4 31B

Model idz-ai/glm-5.2google/gemma-4-31b-it

PublisherZ.AIGoogle AI Studio

AI IQ IQ 120#16 IQ 101#65

Context1,048,576 tokens262,144 tokens

Provider routes3923

Cheapest route$2.07942/1M$0.5355/1M

Privacy posturehas provider E2EE routehas provider E2EE route

Modes chat chat

Z.ai: GLM 5.2 routes

Overview39 endpoints
PricingPrompt and completion rates
BenchmarksTrustedRouter and external sources
ProvidersAll serving providers

Google: Gemma 4 31B routes

Overview23 endpoints
PricingPrompt and completion rates
ProvidersAll serving providers

Production choice

Pick a default model. Keep fallback enabled.

TrustedRouter is useful when you know the model you want, but still need provider rollover, budget limits, usage records, and a prompt path you can verify.

OpenAI clientPython

client = OpenAI(
    base_url="https://api.trustedrouter.com/v1",
    api_key="sk-tr-v1-..."
)

response = client.chat.completions.create(
    model="z-ai/glm-5.2",
    messages=messages,
)