OpenAI compatible API · Attested · Public status
OpenAI: gpt-oss-120b vs nvidia/NVIDIA-Nemotron-3-Ultra-550B
Compare OpenAI: gpt-oss-120b and nvidia/NVIDIA-Nemotron-3-Ultra-550B by providers, context, price, and TrustedRouter route support.
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
OpenAI: gpt-oss-120b has the lower cheapest prompt+completion route on TrustedRouter. OpenAI: gpt-oss-120b has more provider fallback routes, while nvidia/NVIDIA-Nemotron-3-Ultra-550B has the larger context window. Current TrustedRouter probes show OpenAI: gpt-oss-120b with the lower p50 TTFT.
$0.21735/1MOpenAI: gpt-oss-120b cheapest route
$2.73/1Mnvidia/NVIDIA-Nemotron-3-Ultra-550B cheapest route
1268 msOpenAI: gpt-oss-120b measured p50 TTFT
9108 msnvidia/NVIDIA-Nemotron-3-Ultra-550B measured p50 TTFT
OpenAI: gpt-oss-120bnvidia/NVIDIA-Nemotron-3-Ultra-550B
Model id
openai/gpt-oss-120bnvidia/nemotron-3-ultra-550b
PublisherOpenAICrusoe
Context131,072 tokens262,144 tokens
Provider routes234
Cheapest route$0.21735/1M$2.73/1M
Privacy posturehas provider E2EE routeprovider posture varies
Modes
chat
chat
OpenAI: gpt-oss-120b routes
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-oss-120b",
messages=messages,
)