OpenAI compatible API · Attested · Public status

Google: Gemini 3 Flash Preview vs Z.ai: GLM 5.2

Google: Gemini 3 Flash Preview vs Z.ai: GLM 5.2: 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

Z.ai: GLM 5.2 has the lower cheapest prompt+completion route on TrustedRouter. Z.ai: GLM 5.2 has more provider fallback routes, while Google: Gemini 3 Flash Preview has the larger context window. Current TrustedRouter probes show Google: Gemini 3 Flash Preview with the lower p50 TTFT.

$3.675/1MGoogle: Gemini 3 Flash Preview cheapest route

$2.289/1MZ.ai: GLM 5.2 cheapest route

1288 msGoogle: Gemini 3 Flash Preview fastest measured p50 TTFT via google-ai-studio

1520 msZ.ai: GLM 5.2 fastest measured p50 TTFT via telnyx

Google: Gemini 3 Flash PreviewZ.ai: GLM 5.2

Model idgoogle/gemini-3-flash-previewz-ai/glm-5.2

Publisher Google AI Studio Z.AI

AI IQ IQ 116#26 IQ 120#16

Context1,048,576 tokens1,048,576 tokens

Provider routes645

Cheapest route$3.675/1M$2.289/1M

Privacy posturehas ZDR routehas provider E2EE route

Fastest measured p50 TTFT1288 ms via google-ai-studio1520 ms via telnyx

Highest measured throughputnot enough datanot enough data

Recent route uptime range75.00% to 100.00%85.71% to 100.00%

Modes chat chat

Google: Gemini 3 Flash Preview routes

Overview6 endpoints
PricingPrompt and completion rates
ProvidersAll serving providers

Z.ai: GLM 5.2 routes

Overview45 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="google/gemini-3-flash-preview",
    messages=messages,
)

Questions

Which should I use, Google: Gemini 3 Flash Preview or Z.ai: GLM 5.2?

Is Google: Gemini 3 Flash Preview or Z.ai: GLM 5.2 cheaper?

The current cheapest TrustedRouter route is $3.675/1M for Google: Gemini 3 Flash Preview and $2.289/1M for Z.ai: GLM 5.2. The comparison uses current catalog prices and updates as provider pricing changes.

Is Google: Gemini 3 Flash Preview or Z.ai: GLM 5.2 faster?

Current measured p50 time to first token is 1288 ms for Google: Gemini 3 Flash Preview and 1520 ms for Z.ai: GLM 5.2. These are routed probe measurements, not vendor-advertised speeds, and update as new samples arrive.

Can I test Google: Gemini 3 Flash Preview and Z.ai: GLM 5.2 with the same API?

Yes. Use the same OpenAI-compatible TrustedRouter base URL and API key, then change only the model id between google/gemini-3-flash-preview and z-ai/glm-5.2. This makes side-by-side evals possible without maintaining two provider integrations.