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Google: Gemini 3.1 Pro Preview vs MoonshotAI: Kimi K3

Try both on us. Starter credit covers your first requests, then one key routes Gemini 3.1 Pro Preview and Kimi K3. Switch by changing the model name.

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 K3 has the lower published input-plus-output rate and more Credits provider routes. Their context windows are the same size. There is not enough recent probe data to compare speed.

$14.77/1MGoogle: Gemini 3.1 Pro Preview cheapest route

$11.97425/1MMoonshotAI: Kimi K3 cheapest route

not enough dataGoogle: Gemini 3.1 Pro Preview fastest measured p50 TTFT

not enough dataMoonshotAI: Kimi K3 fastest measured p50 TTFT

The price comparison adds each route's rate for one million input tokens and one million output tokens; your cost depends on your input/output mix. 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.

Google: Gemini 3.1 Pro PreviewMoonshotAI: Kimi K3

Model idgoogle/gemini-3.1-pro-previewmoonshotai/kimi-k3

Publisher Google AI Studio Kimi

AI IQ IQ 122#34 IQ 127#21

Context1,048,576 tokens1,048,576 tokens

Credits provider routes328

Cheapest route$14.77/1M$11.97425/1M

Cached input$0.211/1M to $0.422/1M$0.195175/1M to $1.897945/1M

Privacy posturehas ZDR routehas Confidential route (E2EE + ZDR)

Fastest measured p50 TTFTnot enough datanot enough data

Highest measured throughputnot enough datanot enough data

Recent route uptime rangenot enough datanot enough data

Modes chat chat

Google: Gemini 3.1 Pro Preview routes

Overview3 Credits routes
PricingInput, cached input, and output rates
BenchmarksTrustedRouter and external sources
ProvidersAll serving providers

MoonshotAI: Kimi K3 routes

Overview28 Credits routes
PricingInput, cached input, and output rates
ProvidersAll serving providers

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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-azure.trustedrouter.com/v1",
    api_key="sk-tr-v1-..."
)

response = client.chat.completions.create(
    model="google/gemini-3.1-pro-preview",
    messages=messages,
)

Questions

Which should I use, Google: Gemini 3.1 Pro Preview or MoonshotAI: Kimi K3?

MoonshotAI: Kimi K3 has the lower published input-plus-output rate and more Credits provider routes. Their context windows are the same size. There is not enough recent probe data to compare speed.

Is Google: Gemini 3.1 Pro Preview or MoonshotAI: Kimi K3 cheaper?

The current cheapest TrustedRouter route is $14.77/1M for Google: Gemini 3.1 Pro Preview and $11.97425/1M for MoonshotAI: Kimi K3. The comparison uses current catalog prices and updates as provider pricing changes.

Is Google: Gemini 3.1 Pro Preview or MoonshotAI: Kimi K3 faster?

Current measured p50 time to first token is not enough data for Google: Gemini 3.1 Pro Preview and not enough data for MoonshotAI: Kimi K3. These are routed probe measurements, not vendor-advertised speeds, and update as new samples arrive.

Can I test Google: Gemini 3.1 Pro Preview and MoonshotAI: Kimi K3 with the same API?

Yes. Use the same OpenAI-compatible TrustedRouter base URL and API key, then change only the model id between google/gemini-3.1-pro-preview and moonshotai/kimi-k3. This makes side-by-side evals possible without maintaining two provider integrations.