OpenAI compatible API · Attested · Public status

NVIDIA: Nemotron 3 Ultra vs Z.ai: GLM 5.2

Compare NVIDIA: Nemotron 3 Ultra 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

NVIDIA: Nemotron 3 Ultra 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.

$3.15/1MNVIDIA: Nemotron 3 Ultra cheapest route

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

3087 msNVIDIA: Nemotron 3 Ultra measured p50 TTFT

1350 msZ.ai: GLM 5.2 measured p50 TTFT

NVIDIA: Nemotron 3 UltraZ.ai: GLM 5.2

Model idnvidia/nemotron-3-ultra-550b-a55bz-ai/glm-5.2

PublisherTogetherZ.AI

AI IQ — IQ 120#16

Context512,288 tokens1,048,576 tokens

Provider routes743

Cheapest route$3.15/1M$3.927/1M

Privacy posturehas ZDR routehas provider E2EE route

Modes chat chat

NVIDIA: Nemotron 3 Ultra routes

Overview7 endpoints
PricingPrompt and completion rates
ProvidersAll serving providers

Z.ai: GLM 5.2 routes

Overview43 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="nvidia/nemotron-3-ultra-550b-a55b",
    messages=messages,
)