OpenAI compatible API. Attested gateway. Public status.

Z.ai: GLM 5.1 vs DeepSeek: DeepSeek V3.1

Compare Z.ai: GLM 5.1 and DeepSeek: DeepSeek V3.1 by providers, context, price, and TrustedRouter route support.

Verify gateway

1 URLbase_url migration

100smodels and routes

0prompt 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

Z.ai: GLM 5.1 has the lower cheapest prompt+completion route on TrustedRouter. Z.ai: GLM 5.1 has more provider fallback routes, while Z.ai: GLM 5.1 has the larger context window. Current TrustedRouter probes show Z.ai: GLM 5.1 with the lower p50 TTFT.

$4.466/1MZ.ai: GLM 5.1 cheapest route

$4.565/1MDeepSeek: DeepSeek V3.1 cheapest route

883 msZ.ai: GLM 5.1 measured p50 TTFT

1281 msDeepSeek: DeepSeek V3.1 measured p50 TTFT

Z.ai: GLM 5.1DeepSeek: DeepSeek V3.1

Model idz-ai/glm-5.1deepseek/deepseek-chat-v3.1

PublisherZ.AIDeepSeek

Context202,752 tokens163,840 tokens

Provider routes123

Cheapest route$4.466/1M$4.565/1M

Privacy posturehas provider E2EE routehas provider E2EE route

Modes chat chat

Z.ai: GLM 5.1 routes

Overview12 endpoints
PricingPrompt and completion rates
BenchmarksTrustedRouter and external sources
ProvidersAll serving providers

DeepSeek: DeepSeek V3.1 routes

Overview3 endpoints
PricingPrompt and completion rates
BenchmarksTrustedRouter and external sources
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-5.1",
    messages=messages,
)