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MoonshotAI: Kimi K2.6 vs StepFun: Step 5 Preview

Try both on us. Starter credit covers your first requests, then one key routes Kimi K2.6 and Step 5 Preview. 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 the lower published input-plus-output rate, more Credits provider routes and the lower measured p50 time to first token. StepFun: Step 5 Preview has the larger context window.

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

$3.9035/1MStepFun: Step 5 Preview cheapest route

1087 msMoonshotAI: Kimi K2.6 fastest measured p50 TTFT via sail-research

2041 msStepFun: Step 5 Preview fastest measured p50 TTFT via tencent

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 K2.6StepFun: Step 5 Preview

Model idmoonshotai/kimi-k2.6stepfun/step-5-preview

Publisher Kimi StepFun

AI IQ IQ 114#58 —

Context262,144 tokens1,048,576 tokens

Credits provider routes172

Cheapest route$2.532/1M$3.9035/1M

Cached input$0.047475/1M to $0.422/1M$0.05275/1M to $0.1055/1M

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

Fastest measured p50 TTFT1087 ms via sail-research2041 ms via tencent

Highest measured throughput129 tok/s via wandbnot 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

StepFun: Step 5 Preview routes

Overview2 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.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 StepFun: Step 5 Preview?

Is MoonshotAI: Kimi K2.6 or StepFun: Step 5 Preview cheaper?

The current cheapest TrustedRouter route is $2.532/1M for MoonshotAI: Kimi K2.6 and $3.9035/1M for StepFun: Step 5 Preview. The comparison uses current catalog prices and updates as provider pricing changes.

Is MoonshotAI: Kimi K2.6 or StepFun: Step 5 Preview faster?

Current measured p50 time to first token is 1087 ms for MoonshotAI: Kimi K2.6 and 2041 ms for StepFun: Step 5 Preview. These are routed probe measurements, not vendor-advertised speeds, and update as new samples arrive.

Can I test MoonshotAI: Kimi K2.6 and StepFun: Step 5 Preview 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-5-preview. This makes side-by-side evals possible without maintaining two provider integrations.