OpenAI compatible API · Attested · Public status

Moonshot V1 128K Vision Preview vs Z.ai: GLM 5.1

Moonshot V1 128K Vision Preview vs Z.ai: GLM 5.1: 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 5.1 has the lower cheapest prompt+completion route on TrustedRouter. Z.ai: GLM 5.1 has more provider fallback routes, while Z.ai: GLM 5.1 has the larger context window. Current TrustedRouter probes show Z.ai: GLM 5.1 with the lower p50 TTFT.

$7.385/1MMoonshot V1 128K Vision Preview cheapest route

$4.2833/1MZ.ai: GLM 5.1 cheapest route

1832 msMoonshot V1 128K Vision Preview fastest measured p50 TTFT via kimi

1126 msZ.ai: GLM 5.1 fastest measured p50 TTFT via friendli

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.

Moonshot V1 128K Vision PreviewZ.ai: GLM 5.1

Model idmoonshotai/moonshot-v1-128k-vision-previewz-ai/glm-5.1

Publisher Kimi Z.AI

AI IQ — IQ 114#39

Context131,072 tokens204,800 tokens

Provider routes223

Cheapest route$7.385/1M$4.2833/1M

Privacy postureprovider posture varieshas provider E2EE route

Fastest measured p50 TTFT1832 ms via kimi1126 ms via friendli

Highest measured throughputnot enough datanot enough data

Recent route uptime range100.00%66.67% to 100.00%

Modes chat chat

Moonshot V1 128K Vision Preview routes

Overview2 endpoints
PricingPrompt and completion rates
ProvidersAll serving providers

Z.ai: GLM 5.1 routes

Overview23 endpoints
PricingPrompt and completion rates
BenchmarksTrustedRouter and external sources
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/moonshot-v1-128k-vision-preview",
    messages=messages,
)

Questions

Which should I use, Moonshot V1 128K Vision Preview or Z.ai: GLM 5.1?

Is Moonshot V1 128K Vision Preview or Z.ai: GLM 5.1 cheaper?

The current cheapest TrustedRouter route is $7.385/1M for Moonshot V1 128K Vision Preview and $4.2833/1M for Z.ai: GLM 5.1. The comparison uses current catalog prices and updates as provider pricing changes.

Is Moonshot V1 128K Vision Preview or Z.ai: GLM 5.1 faster?

Current measured p50 time to first token is 1832 ms for Moonshot V1 128K Vision Preview and 1126 ms for Z.ai: GLM 5.1. These are routed probe measurements, not vendor-advertised speeds, and update as new samples arrive.

Can I test Moonshot V1 128K Vision Preview and Z.ai: GLM 5.1 with the same API?

Yes. Use the same OpenAI-compatible TrustedRouter base URL and API key, then change only the model id between moonshotai/moonshot-v1-128k-vision-preview and z-ai/glm-5.1. This makes side-by-side evals possible without maintaining two provider integrations.