OpenAI compatible API · Attested · Public status

MoonshotAI: Kimi K2.5 vs Z.ai: GLM 5.3 Flash

MoonshotAI: Kimi K2.5 vs Z.ai: GLM 5.3 Flash: compare current API pricing, context, provider routes, privacy, p50 latency, and OpenAI-compatible access.

Verify gateway

Onebase URL to migrate

100sof models and routes

0prompt or output logs. Always.

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

Z.ai: GLM 5.3 Flash has the lower published input-plus-output rate, more Credits provider routes, the larger context window and the lower measured p50 time to first token.

$2.79575/1MMoonshotAI: Kimi K2.5 cheapest route

$0.32705/1MZ.ai: GLM 5.3 Flash cheapest route

1073 msMoonshotAI: Kimi K2.5 fastest measured p50 TTFT via azure

626 msZ.ai: GLM 5.3 Flash fastest measured p50 TTFT via wafer

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 K2.5Z.ai: GLM 5.3 Flash

Model idmoonshotai/kimi-k2.5z-ai/glm-5.3-flash

Publisher Kimi Z.AI

AI IQ IQ 110#71 IQ 120#40

Context262,144 tokens1,048,576 tokens

Credits provider routes931

Cheapest route$2.79575/1M$0.32705/1M

Cached input$0.07385/1M to $0.422/1M$0.015825/1M to $0.110775/1M

Privacy posturehas ZDR routehas Confidential route (E2EE + ZDR)

Fastest measured p50 TTFT1073 ms via azure626 ms via wafer

Highest measured throughputnot enough datanot enough data

Recent route uptime range100.00%0.00% to 100.00%

Modes chat chat

MoonshotAI: Kimi K2.5 routes

Overview9 Credits routes
PricingInput, cached input, and output rates
ProvidersAll serving providers

Z.ai: GLM 5.3 Flash routes

Overview31 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-k2.5",
    messages=messages,
)

Questions

Which should I use, MoonshotAI: Kimi K2.5 or Z.ai: GLM 5.3 Flash?

Z.ai: GLM 5.3 Flash has the lower published input-plus-output rate, more Credits provider routes, the larger context window and the lower measured p50 time to first token.

Is MoonshotAI: Kimi K2.5 or Z.ai: GLM 5.3 Flash cheaper?

The current cheapest TrustedRouter route is $2.79575/1M for MoonshotAI: Kimi K2.5 and $0.32705/1M for Z.ai: GLM 5.3 Flash. The comparison uses current catalog prices and updates as provider pricing changes.

Is MoonshotAI: Kimi K2.5 or Z.ai: GLM 5.3 Flash faster?

Current measured p50 time to first token is 1073 ms for MoonshotAI: Kimi K2.5 and 626 ms for Z.ai: GLM 5.3 Flash. These are routed probe measurements, not vendor-advertised speeds, and update as new samples arrive.

Can I test MoonshotAI: Kimi K2.5 and Z.ai: GLM 5.3 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-k2.5 and z-ai/glm-5.3-flash. This makes side-by-side evals possible without maintaining two provider integrations.