OpenAI compatible API · Attested · Public status

Qwen: Qwen3.5-27B vs Z.ai: GLM 4.5 Air

Compare Qwen: Qwen3.5-27B and Z.ai: GLM 4.5 Air 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

Z.ai: GLM 4.5 Air has the lower cheapest prompt+completion route on TrustedRouter. Qwen: Qwen3.5-27B has more provider fallback routes, while Qwen: Qwen3.5-27B has the larger context window. Current TrustedRouter probes show Qwen: Qwen3.5-27B with the lower p50 TTFT.

$2.3625/1MQwen: Qwen3.5-27B cheapest route

$1.05/1MZ.ai: GLM 4.5 Air cheapest route

2965 msQwen: Qwen3.5-27B measured p50 TTFT

5242 msZ.ai: GLM 4.5 Air measured p50 TTFT

Qwen: Qwen3.5-27BZ.ai: GLM 4.5 Air

Model idqwen/qwen3.5-27bz-ai/glm-4.5-air

PublisherDeepInfraZ.AI

AI IQ — —

Context262,144 tokens131,072 tokens

Provider routes74

Cheapest route$2.3625/1M$1.05/1M

Privacy postureprovider posture variesprovider posture varies

Modes chat chat

Qwen: Qwen3.5-27B routes

Overview7 endpoints
PricingPrompt and completion rates
ProvidersAll serving providers

Z.ai: GLM 4.5 Air routes

Overview4 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="qwen/qwen3.5-27b",
    messages=messages,
)