Bring your own key

Claude Sonnet 4.5 20250929 Coding vs MoonshotAI: Kimi K3

One key routes both. Starter credit covers your first Kimi K3 requests, while Claude Sonnet 4.5 20250929 Coding runs on your own provider key. 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 more Credits provider routes and the larger context window. A published Credits price comparison is not available for both models. There is not enough recent probe data to compare speed.

$18.99/1MClaude Sonnet 4.5 20250929 Coding cheapest route

$11.97425/1MMoonshotAI: Kimi K3 cheapest route

not enough dataClaude Sonnet 4.5 20250929 Coding fastest measured p50 TTFT

980 msMoonshotAI: Kimi K3 fastest measured p50 TTFT via lyceum

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.

Claude Sonnet 4.5 20250929 CodingMoonshotAI: Kimi K3

Model idanthropic/claude-sonnet-4.5-20250929-codingmoonshotai/kimi-k3

Publisher Anthropic Kimi

AI IQ — IQ 127#21

Context200,000 tokens1,048,576 tokens

Credits provider routes028

Cheapest route$18.99/1M$11.97425/1M

Cached inputNot published$0.195175/1M to $1.897945/1M

Privacy postureprovider posture varieshas Confidential route (E2EE + ZDR)

Fastest measured p50 TTFTnot enough data980 ms via lyceum

Highest measured throughputnot enough data172 tok/s via sail-research

Recent route uptime rangenot enough data0.00% to 100.00%

Modes chat messages chat

Claude Sonnet 4.5 20250929 Coding routes

Overview0 Credits routes

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

response = client.chat.completions.create(
    model="anthropic/claude-sonnet-4.5-20250929-coding",
    messages=messages,
)

Questions

Which should I use, Claude Sonnet 4.5 20250929 Coding or MoonshotAI: Kimi K3?

Is Claude Sonnet 4.5 20250929 Coding or MoonshotAI: Kimi K3 cheaper?

The current cheapest TrustedRouter route is $18.99/1M for Claude Sonnet 4.5 20250929 Coding and $11.97425/1M for MoonshotAI: Kimi K3. The comparison uses current catalog prices and updates as provider pricing changes.

Is Claude Sonnet 4.5 20250929 Coding or MoonshotAI: Kimi K3 faster?

Current measured p50 time to first token is not enough data for Claude Sonnet 4.5 20250929 Coding and 980 ms for MoonshotAI: Kimi K3. These are routed probe measurements, not vendor-advertised speeds, and update as new samples arrive.

Can I test Claude Sonnet 4.5 20250929 Coding 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 anthropic/claude-sonnet-4.5-20250929-coding and moonshotai/kimi-k3. This makes side-by-side evals possible without maintaining two provider integrations.