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MoonshotAI: Kimi K2.7 Code vs StepFun: Step 3.5 Flash

Try both on us. Starter credit covers your first requests, then one key routes Kimi K2.7 Code and Step 3.5 Flash. 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 K2.7 Code has more Credits provider routes and the lower measured p50 time to first token. Step 3.5 Flash has the lower published input-plus-output rate. Their context windows are the same size.

$4.173791/1MMoonshotAI: Kimi K2.7 Code cheapest route

$0.422/1MStepFun: Step 3.5 Flash cheapest route

1678 msMoonshotAI: Kimi K2.7 Code fastest measured p50 TTFT via wandb

2496 msStepFun: Step 3.5 Flash 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 K2.7 CodeStepFun: Step 3.5 Flash

Model idmoonshotai/kimi-k2.7-codestepfun/step-3.5-flash

Publisher Kimi StepFun

AI IQ IQ 111#77 —

Context262,144 tokens262,144 tokens

Credits provider routes141

Cheapest route$4.173791/1M$0.422/1M

Cached input$0.15825/1M to $0.546617/1M$0.0211/1M

Privacy posturehas ZDR routeprovider posture varies

Fastest measured p50 TTFT1678 ms via wandb2496 ms via stepfun

Highest measured throughput167 tok/s via lyceumnot enough data

Recent route uptime range100.00%100.00%

Modes chat chat

MoonshotAI: Kimi K2.7 Code routes

Overview14 Credits routes
PricingInput, cached input, and output rates
BenchmarksTrustedRouter and external sources
ProvidersAll serving providers

StepFun: Step 3.5 Flash 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-k2.7-code",
    messages=messages,
)

Questions

Which should I use, MoonshotAI: Kimi K2.7 Code or StepFun: Step 3.5 Flash?

Is MoonshotAI: Kimi K2.7 Code or StepFun: Step 3.5 Flash cheaper?

The current cheapest TrustedRouter route is $4.173791/1M for MoonshotAI: Kimi K2.7 Code and $0.422/1M for StepFun: Step 3.5 Flash. The comparison uses current catalog prices and updates as provider pricing changes.

Is MoonshotAI: Kimi K2.7 Code or StepFun: Step 3.5 Flash faster?

Current measured p50 time to first token is 1678 ms for MoonshotAI: Kimi K2.7 Code and 2496 ms for StepFun: Step 3.5 Flash. These are routed probe measurements, not vendor-advertised speeds, and update as new samples arrive.

Can I test MoonshotAI: Kimi K2.7 Code and StepFun: Step 3.5 Flash 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-k2.7-code and stepfun/step-3.5-flash. This makes side-by-side evals possible without maintaining two provider integrations.