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MoonshotAI: Kimi K2.6 vs Step 3.5 Flash 2603

Try both on us. Starter credit covers your first requests, then one key routes Kimi K2.6 and Step 3.5 Flash 2603. 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 K2.6 has more Credits provider routes and the lower measured p50 time to first token. Step 3.5 Flash 2603 has the lower published input-plus-output rate. Their context windows are the same size.

$2.532/1MMoonshotAI: Kimi K2.6 cheapest route

$0.422/1MStep 3.5 Flash 2603 cheapest route

949 msMoonshotAI: Kimi K2.6 fastest measured p50 TTFT via inceptron

2440 msStep 3.5 Flash 2603 fastest measured p50 TTFT via stepfun

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.

MoonshotAI: Kimi K2.6Step 3.5 Flash 2603

Model idmoonshotai/kimi-k2.6stepfun/step-3.5-flash-2603

Publisher Kimi StepFun

AI IQ IQ 114#58 —

Context262,144 tokens262,144 tokens

Credits provider routes171

Cheapest route$2.532/1M$0.422/1M

Cached input$0.047475/1M to $0.422/1M$0.0211/1M

Privacy posturehas Confidential route (E2EE + ZDR)provider posture varies

Fastest measured p50 TTFT949 ms via inceptron2440 ms via stepfun

Highest measured throughputnot enough datanot enough data

Recent route uptime range100.00%100.00%

Modes chat chat

MoonshotAI: Kimi K2.6 routes

Overview17 Credits routes
PricingInput, cached input, and output rates
BenchmarksTrustedRouter and external sources
ProvidersAll serving providers

Step 3.5 Flash 2603 routes

Overview1 Credits routes

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

response = client.chat.completions.create(
    model="moonshotai/kimi-k2.6",
    messages=messages,
)

Questions

Which should I use, MoonshotAI: Kimi K2.6 or Step 3.5 Flash 2603?

Is MoonshotAI: Kimi K2.6 or Step 3.5 Flash 2603 cheaper?

The current cheapest TrustedRouter route is $2.532/1M for MoonshotAI: Kimi K2.6 and $0.422/1M for Step 3.5 Flash 2603. The comparison uses current catalog prices and updates as provider pricing changes.

Is MoonshotAI: Kimi K2.6 or Step 3.5 Flash 2603 faster?

Current measured p50 time to first token is 949 ms for MoonshotAI: Kimi K2.6 and 2440 ms for Step 3.5 Flash 2603. These are routed probe measurements, not vendor-advertised speeds, and update as new samples arrive.

Can I test MoonshotAI: Kimi K2.6 and Step 3.5 Flash 2603 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-k2.6 and stepfun/step-3.5-flash-2603. This makes side-by-side evals possible without maintaining two provider integrations.