OpenAI compatible API · Attested · Public status

MoonshotAI: Kimi K2.5 vs NVIDIA: Nemotron 3 Ultra

MoonshotAI: Kimi K2.5 vs NVIDIA: Nemotron 3 Ultra: compare current API pricing, context, provider routes, privacy, p50 latency, and OpenAI-compatible access.

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

Monthly evidence

MoonshotAI: Kimi K2.5 has the lower cheapest prompt+completion route on TrustedRouter. MoonshotAI: Kimi K2.5 has more provider fallback routes, while MoonshotAI: Kimi K2.5 has the larger context window. Current TrustedRouter probes show NVIDIA: Nemotron 3 Ultra with the lower p50 TTFT.

$2.79575/1MMoonshotAI: Kimi K2.5 cheapest route

$2.8485/1MNVIDIA: Nemotron 3 Ultra cheapest route

1790 msMoonshotAI: Kimi K2.5 fastest measured p50 TTFT via siliconflow

921 msNVIDIA: Nemotron 3 Ultra fastest measured p50 TTFT via wandb

Prices and live route measurements can change. Use the monthly reports when you need a stable evidence window, then run a small task-specific eval before choosing a production default.

MoonshotAI: Kimi K2.5NVIDIA: Nemotron 3 Ultra

Model idmoonshotai/kimi-k2.5nvidia/nemotron-3-ultra-550b-a55b

Publisher Kimi DeepInfra

AI IQ IQ 111#55 —

Context262,144 tokens256,000 tokens

Credits provider routes95

Cheapest route$2.79575/1M$2.8485/1M

Cached input$0.07385/1M to $0.422/1M$0.1055/1M to $0.15825/1M

Privacy postureprovider posture varieshas ZDR route

Fastest measured p50 TTFT1790 ms via siliconflow921 ms via wandb

Highest measured throughputnot enough datanot enough data

Recent route uptime range100.00%0.00% to 100.00%

Modes chat chat

MoonshotAI: Kimi K2.5 routes

Overview9 Credits routes
PricingInput, cached input, and output rates
ProvidersAll serving providers

NVIDIA: Nemotron 3 Ultra routes

Overview5 Credits routes
PricingInput, cached input, and output rates
ProvidersAll serving providers

Related comparisons

Browse every comparison

MoonshotAI: Kimi K2.5 vs Z.ai: GLM 5.240 combined provider routes
NVIDIA: Nemotron 3 Ultra vs Z.ai: GLM 5.236 combined provider routes
MoonshotAI: Kimi K2.5 vs MoonshotAI: Kimi K332 combined provider routes
DeepSeek: DeepSeek V4 Flash 0731 vs MoonshotAI: Kimi K2.531 combined provider routes
MoonshotAI: Kimi K2.5 vs Z.ai: GLM 5.331 combined provider routes
MoonshotAI: Kimi K2.5 vs Z.ai: GLM 5.3 Flash29 combined provider routes
MoonshotAI: Kimi K2.5 vs MoonshotAI: Kimi K2.628 combined provider routes
MoonshotAI: Kimi K2.5 vs OpenAI: gpt-oss-120b28 combined provider 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-k2.5",
    messages=messages,
)

Questions

Which should I use, MoonshotAI: Kimi K2.5 or NVIDIA: Nemotron 3 Ultra?

Is MoonshotAI: Kimi K2.5 or NVIDIA: Nemotron 3 Ultra cheaper?

The current cheapest TrustedRouter route is $2.79575/1M for MoonshotAI: Kimi K2.5 and $2.8485/1M for NVIDIA: Nemotron 3 Ultra. The comparison uses current catalog prices and updates as provider pricing changes.

Is MoonshotAI: Kimi K2.5 or NVIDIA: Nemotron 3 Ultra faster?

Current measured p50 time to first token is 1790 ms for MoonshotAI: Kimi K2.5 and 921 ms for NVIDIA: Nemotron 3 Ultra. These are routed probe measurements, not vendor-advertised speeds, and update as new samples arrive.

Can I test MoonshotAI: Kimi K2.5 and NVIDIA: Nemotron 3 Ultra with the same API?

Yes. Use the same OpenAI-compatible TrustedRouter base URL and API key, then change only the model id between moonshotai/kimi-k2.5 and nvidia/nemotron-3-ultra-550b-a55b. This makes side-by-side evals possible without maintaining two provider integrations.