OpenAI compatible API · Attested · Public status
MoonshotAI: Kimi K3 vs nvidia/NVIDIA-Nemotron-3-Ultra-550B
Compare MoonshotAI: Kimi K3 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
nvidia/NVIDIA-Nemotron-3-Ultra-550B has the lower cheapest prompt+completion route on TrustedRouter. MoonshotAI: Kimi K3 has more provider fallback routes, while MoonshotAI: Kimi K3 has the larger context window. Current TrustedRouter probes show MoonshotAI: Kimi K3 with the lower p50 TTFT.
$18.9/1MMoonshotAI: Kimi K3 cheapest route
$2.73/1Mnvidia/NVIDIA-Nemotron-3-Ultra-550B cheapest route
7073 msMoonshotAI: Kimi K3 measured p50 TTFT
9108 msnvidia/NVIDIA-Nemotron-3-Ultra-550B measured p50 TTFT
MoonshotAI: Kimi K3nvidia/NVIDIA-Nemotron-3-Ultra-550B
Model id
moonshotai/kimi-k3nvidia/nemotron-3-ultra-550b
PublisherKimiCrusoe
Context1,048,576 tokens262,144 tokens
Provider routes84
Cheapest route$18.9/1M$2.73/1M
Privacy postureprovider posture variesprovider posture varies
Modes
chat
chat
MoonshotAI: Kimi K3 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="moonshotai/kimi-k3",
messages=messages,
)