OpenAI compatible API · Attested · Public status

Z.ai: GLM 5.3 vs GLM 4.7 Flash

Z.ai: GLM 5.3 vs GLM 4.7 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 has more Credits provider routes and the larger context window. GLM 4.7 Flash has the lower published input-plus-output rate. There is not enough recent probe data to compare speed.

$3.021521/1MZ.ai: GLM 5.3 cheapest route

$0.49585/1MGLM 4.7 Flash cheapest route

704 msZ.ai: GLM 5.3 fastest measured p50 TTFT via fireworks

not enough dataGLM 4.7 Flash fastest measured p50 TTFT

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.

Z.ai: GLM 5.3GLM 4.7 Flash

Model idz-ai/glm-5.3zai-org/glm-4.7-flash

Publisher Z.AI Novita AI

AI IQ IQ 127#16 —

Context1,048,576 tokens200,000 tokens

Credits provider routes271

Cheapest route$3.021521/1M$0.49585/1M

Cached input$0.1477/1M to $1.02546/1M$0.01055/1M

Privacy posturehas provider E2EE routeprovider posture varies

Fastest measured p50 TTFT704 ms via fireworksnot enough data

Highest measured throughput99 tok/s via thinkingmachinesnot enough data

Recent route uptime range88.46% to 100.00%not enough data

Modes chat chat

Z.ai: GLM 5.3 routes

Overview27 Credits routes
PricingInput, cached input, and output rates
ProvidersAll serving providers

GLM 4.7 Flash routes

Overview1 Credits routes

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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="z-ai/glm-5.3",
    messages=messages,
)

Questions

Which should I use, Z.ai: GLM 5.3 or GLM 4.7 Flash?

Z.ai: GLM 5.3 has more Credits provider routes and the larger context window. GLM 4.7 Flash has the lower published input-plus-output rate. There is not enough recent probe data to compare speed.

Is Z.ai: GLM 5.3 or GLM 4.7 Flash cheaper?

The current cheapest TrustedRouter route is $3.021521/1M for Z.ai: GLM 5.3 and $0.49585/1M for GLM 4.7 Flash. The comparison uses current catalog prices and updates as provider pricing changes.

Is Z.ai: GLM 5.3 or GLM 4.7 Flash faster?

Current measured p50 time to first token is 704 ms for Z.ai: GLM 5.3 and not enough data for GLM 4.7 Flash. These are routed probe measurements, not vendor-advertised speeds, and update as new samples arrive.

Can I test Z.ai: GLM 5.3 and 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 z-ai/glm-5.3 and zai-org/glm-4.7-flash. This makes side-by-side evals possible without maintaining two provider integrations.