OpenAI compatible API · Attested · Public status

OpenAI: GPT-5.6 Terra vs Z.ai: GLM 5

Compare OpenAI: GPT-5.6 Terra and Z.ai: GLM 5 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

Z.ai: GLM 5 has the lower cheapest prompt+completion route on TrustedRouter. Z.ai: GLM 5 has more provider fallback routes, while OpenAI: GPT-5.6 Terra has the larger context window. Current TrustedRouter probes show OpenAI: GPT-5.6 Terra with the lower p50 TTFT.

$14.7/1MOpenAI: GPT-5.6 Terra cheapest route

$2.814/1MZ.ai: GLM 5 cheapest route

1295 msOpenAI: GPT-5.6 Terra measured p50 TTFT

2241 msZ.ai: GLM 5 measured p50 TTFT

OpenAI: GPT-5.6 TerraZ.ai: GLM 5

Model idopenai/gpt-5.6-terraz-ai/glm-5

Publisher

OpenAI

Z.AI

AI IQ IQ 132#5 IQ 105#52

Context1,050,000 tokens204,800 tokens

Provider routes613

Cheapest route$14.7/1M$2.814/1M

Privacy posturehas ZDR routehas ZDR route

Modes chat chat

OpenAI: GPT-5.6 Terra routes

Overview6 endpoints
PricingPrompt and completion rates
ProvidersAll serving providers

Z.ai: GLM 5 routes

Overview13 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-azure.trustedrouter.com/v1",
    api_key="sk-tr-v1-..."
)

response = client.chat.completions.create(
    model="openai/gpt-5.6-terra",
    messages=messages,
)