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Google: Gemini 3.1 Pro Preview vs Z.ai: GLM 4.7 Flash

Try both on us. Starter credit covers your first requests, then one key routes Gemini 3.1 Pro Preview and GLM 4.7 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

Google: Gemini 3.1 Pro Preview has the larger context window. Z.ai: GLM 4.7 Flash has the lower published input-plus-output rate, more Credits provider routes and the lower measured p50 time to first token.

$14.77/1MGoogle: Gemini 3.1 Pro Preview cheapest route

$0.4853/1MZ.ai: GLM 4.7 Flash cheapest route

2939 msGoogle: Gemini 3.1 Pro Preview fastest measured p50 TTFT via google-vertex

886 msZ.ai: GLM 4.7 Flash fastest measured p50 TTFT via greenference

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.

Google: Gemini 3.1 Pro PreviewZ.ai: GLM 4.7 Flash

Model idgoogle/gemini-3.1-pro-previewz-ai/glm-4.7-flash

Publisher Google AI Studio Z.AI

AI IQ IQ 122#34 —

Context1,048,576 tokens131,072 tokens

Credits provider routes36

Cheapest route$14.77/1M$0.4853/1M

Cached input$0.211/1M to $0.422/1M$0.01055/1M to $0.03442/1M

Privacy posturehas ZDR routehas ZDR route

Fastest measured p50 TTFT2939 ms via google-vertex886 ms via greenference

Highest measured throughput79 tok/s via google-ai-studionot enough data

Recent route uptime range100.00%100.00%

Modes chat chat

Google: Gemini 3.1 Pro Preview routes

Overview3 Credits routes
PricingInput, cached input, and output rates
BenchmarksTrustedRouter and external sources
ProvidersAll serving providers

Z.ai: GLM 4.7 Flash routes

Overview6 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="google/gemini-3.1-pro-preview",
    messages=messages,
)

Questions

Which should I use, Google: Gemini 3.1 Pro Preview or Z.ai: GLM 4.7 Flash?

Is Google: Gemini 3.1 Pro Preview or Z.ai: GLM 4.7 Flash cheaper?

The current cheapest TrustedRouter route is $14.77/1M for Google: Gemini 3.1 Pro Preview and $0.4853/1M for Z.ai: GLM 4.7 Flash. The comparison uses current catalog prices and updates as provider pricing changes.

Is Google: Gemini 3.1 Pro Preview or Z.ai: GLM 4.7 Flash faster?

Current measured p50 time to first token is 2939 ms for Google: Gemini 3.1 Pro Preview and 886 ms for Z.ai: GLM 4.7 Flash. These are routed probe measurements, not vendor-advertised speeds, and update as new samples arrive.

Can I test Google: Gemini 3.1 Pro Preview and Z.ai: GLM 4.7 Flash 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-3.1-pro-preview and z-ai/glm-4.7-flash. This makes side-by-side evals possible without maintaining two provider integrations.