OpenAI compatible API · Attested · Public status

NVIDIA: Nemotron 3 Ultra vs Qwen: Qwen3.5-27B

Compare NVIDIA: Nemotron 3 Ultra and Qwen: Qwen3.5-27B 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

Qwen: Qwen3.5-27B has the lower cheapest prompt+completion route on TrustedRouter. NVIDIA: Nemotron 3 Ultra has more provider fallback routes, while NVIDIA: Nemotron 3 Ultra has the larger context window. Current TrustedRouter probes show NVIDIA: Nemotron 3 Ultra with the lower p50 TTFT.

$3.15/1MNVIDIA: Nemotron 3 Ultra cheapest route

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

2713 msNVIDIA: Nemotron 3 Ultra measured p50 TTFT

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

NVIDIA: Nemotron 3 UltraQwen: Qwen3.5-27B

Model idnvidia/nemotron-3-ultra-550b-a55bqwen/qwen3.5-27b

PublisherTogetherDeepInfra

AI IQ — —

Context512,288 tokens262,144 tokens

Provider routes77

Cheapest route$3.15/1M$2.3625/1M

Privacy posturehas ZDR routeprovider posture varies

Modes chat chat

NVIDIA: Nemotron 3 Ultra routes

Overview7 endpoints
PricingPrompt and completion rates
ProvidersAll serving providers

Qwen: Qwen3.5-27B routes

Overview7 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="nvidia/nemotron-3-ultra-550b-a55b",
    messages=messages,
)