OpenAI compatible API · Attested · Public status

Z.ai: GLM 5.1 vs Qwen: Qwen3.5 397B A17B

Compare Z.ai: GLM 5.1 and Qwen: Qwen3.5 397B A17B by providers, context, price, and TrustedRouter route support.

Verify gateway

Onebase URL to migrate

100sof models and routes

0prompt or output logs. Always.

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

Qwen: Qwen3.5 397B A17B has the lower cheapest prompt+completion route on TrustedRouter. Z.ai: GLM 5.1 has more provider fallback routes, while Qwen: Qwen3.5 397B A17B has the larger context window. Current TrustedRouter probes show Qwen: Qwen3.5 397B A17B with the lower p50 TTFT.

$4.263/1MZ.ai: GLM 5.1 cheapest route

$2.97675/1MQwen: Qwen3.5 397B A17B cheapest route

3060 msZ.ai: GLM 5.1 measured p50 TTFT

2966 msQwen: Qwen3.5 397B A17B measured p50 TTFT

Z.ai: GLM 5.1Qwen: Qwen3.5 397B A17B

Model idz-ai/glm-5.1qwen/qwen3.5-397b-a17b

PublisherZ.AIDeepInfra

AI IQ IQ 114#32 —

Context204,800 tokens262,144 tokens

Provider routes2315

Cheapest route$4.263/1M$2.97675/1M

Privacy posturehas provider E2EE routehas provider E2EE route

Modes chat chat

Z.ai: GLM 5.1 routes

Overview23 endpoints
PricingPrompt and completion rates
BenchmarksTrustedRouter and external sources
ProvidersAll serving providers

Qwen: Qwen3.5 397B A17B routes

Overview15 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-5.1",
    messages=messages,
)