OpenAI compatible API · Attested · Public status

OpenAI: GPT-4.1 Nano vs Z.ai: GLM 5.2

Compare OpenAI: GPT-4.1 Nano and Z.ai: GLM 5.2 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

OpenAI: GPT-4.1 Nano 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 Z.ai: GLM 5.2 with the lower p50 TTFT.

$0.525/1MOpenAI: GPT-4.1 Nano cheapest route

$3.927/1MZ.ai: GLM 5.2 cheapest route

4007 msOpenAI: GPT-4.1 Nano measured p50 TTFT

1326 msZ.ai: GLM 5.2 measured p50 TTFT

OpenAI: GPT-4.1 NanoZ.ai: GLM 5.2

Model idopenai/gpt-4.1-nanoz-ai/glm-5.2

PublisherOpenAIZ.AI

AI IQ — IQ 120#16

Context1,047,576 tokens1,048,576 tokens

Provider routes240

Cheapest route$0.525/1M$3.927/1M

Privacy postureprovider posture varieshas provider E2EE route

Modes chat chat

OpenAI: GPT-4.1 Nano routes

Overview2 endpoints
PricingPrompt and completion rates
ProvidersAll serving providers

Z.ai: GLM 5.2 routes

Overview40 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="openai/gpt-4.1-nano",
    messages=messages,
)