OpenAI compatible API · Attested · Public status

Qwen: Qwen3.5 397B A17B vs Z.ai: GLM 5.3 Flash

Qwen: Qwen3.5 397B A17B 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 cheapest prompt+completion route on TrustedRouter. Z.ai: GLM 5.3 Flash has more provider fallback routes, while Z.ai: GLM 5.3 Flash has the larger context window. Current TrustedRouter probes show Qwen: Qwen3.5 397B A17B with the lower p50 TTFT.

$3.63975/1MQwen: Qwen3.5 397B A17B cheapest route

$0.342875/1MZ.ai: GLM 5.3 Flash cheapest route

1185 msQwen: Qwen3.5 397B A17B fastest measured p50 TTFT via digitalocean

1980 msZ.ai: GLM 5.3 Flash fastest measured p50 TTFT via featherless

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.

Qwen: Qwen3.5 397B A17BZ.ai: GLM 5.3 Flash

Model idqwen/qwen3.5-397b-a17bz-ai/glm-5.3-flash

Publisher DeepInfra Z.AI

AI IQ — IQ 121#20

Context262,144 tokens1,310,720 tokens

Provider routes1726

Cheapest route$3.63975/1M$0.342875/1M

Privacy posturehas provider E2EE routehas ZDR route

Fastest measured p50 TTFT1185 ms via digitalocean1980 ms via featherless

Highest measured throughputnot enough datanot enough data

Recent route uptime range75.00% to 100.00%0.00% to 100.00%

Modes chat chat

Qwen: Qwen3.5 397B A17B routes

Overview17 endpoints
PricingPrompt and completion rates
ProvidersAll serving providers

Z.ai: GLM 5.3 Flash routes

Overview26 endpoints
PricingPrompt and completion 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="qwen/qwen3.5-397b-a17b",
    messages=messages,
)

Questions

Which should I use, Qwen: Qwen3.5 397B A17B or Z.ai: GLM 5.3 Flash?

Is Qwen: Qwen3.5 397B A17B or Z.ai: GLM 5.3 Flash cheaper?

The current cheapest TrustedRouter route is $3.63975/1M for Qwen: Qwen3.5 397B A17B and $0.342875/1M for Z.ai: GLM 5.3 Flash. The comparison uses current catalog prices and updates as provider pricing changes.

Is Qwen: Qwen3.5 397B A17B or Z.ai: GLM 5.3 Flash faster?

Current measured p50 time to first token is 1185 ms for Qwen: Qwen3.5 397B A17B and 1980 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 Qwen: Qwen3.5 397B A17B 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 qwen/qwen3.5-397b-a17b and z-ai/glm-5.3-flash. This makes side-by-side evals possible without maintaining two provider integrations.