OpenAI compatible API · Attested · Public status

Google: Gemma 4 26B A4B vs Z.ai: GLM 5.1

Google: Gemma 4 26B A4B 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

Google: Gemma 4 26B A4B has the lower cheapest prompt+completion route on TrustedRouter. Z.ai: GLM 5.1 has more provider fallback routes, while Google: Gemma 4 26B A4B has the larger context window. Current TrustedRouter probes show Z.ai: GLM 5.1 with the lower p50 TTFT.

$0.42/1MGoogle: Gemma 4 26B A4B cheapest route

$4.263/1MZ.ai: GLM 5.1 cheapest route

2175 msGoogle: Gemma 4 26B A4B fastest measured p50 TTFT via siliconflow

1079 msZ.ai: GLM 5.1 fastest measured p50 TTFT via wafer

Google: Gemma 4 26B A4B Z.ai: GLM 5.1

Model idgoogle/gemma-4-26b-a4b-itz-ai/glm-5.1

Publisher Google AI Studio Z.AI

AI IQ IQ 96#81 IQ 114#32

Context262,144 tokens204,800 tokens

Provider routes1224

Cheapest route$0.42/1M$4.263/1M

Privacy posturehas ZDR routehas confidential-compute route

Fastest measured p50 TTFT2175 ms via siliconflow1079 ms via wafer

Highest measured throughputnot enough datanot enough data

Recent route uptime range100.00%75.00% to 100.00%

Modes chat chat

Google: Gemma 4 26B A4B routes

Overview12 endpoints
PricingPrompt and completion rates
ProvidersAll serving providers

Z.ai: GLM 5.1 routes

Overview24 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/gemma-4-26b-a4b-it",
    messages=messages,
)

Questions

Which should I use, Google: Gemma 4 26B A4B or Z.ai: GLM 5.1?

Is Google: Gemma 4 26B A4B or Z.ai: GLM 5.1 cheaper?

The current cheapest TrustedRouter route is $0.42/1M for Google: Gemma 4 26B A4B and $4.263/1M for Z.ai: GLM 5.1. The comparison uses current catalog prices and updates as provider pricing changes.

Is Google: Gemma 4 26B A4B or Z.ai: GLM 5.1 faster?

Current measured p50 time to first token is 2175 ms for Google: Gemma 4 26B A4B and 1079 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 Google: Gemma 4 26B A4B 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 google/gemma-4-26b-a4b-it and z-ai/glm-5.1. This makes side-by-side evals possible without maintaining two provider integrations.