OpenAI compatible API · Attested · Public status

Runway Gen-4.5 vs Z.ai: GLM 5.2

Runway Gen-4.5 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

Monthly evidence

Runway Gen-4.5 has the lower cheapest prompt+completion route on TrustedRouter. Z.ai: GLM 5.2 has more provider fallback routes, while Z.ai: GLM 5.2 has the larger context window. Probe-backed speed data is shown when enough recent samples exist.

selected routeRunway Gen-4.5 cheapest route

$2.2999/1MZ.ai: GLM 5.2 cheapest route

not enough dataRunway Gen-4.5 fastest measured p50 TTFT

899 msZ.ai: GLM 5.2 fastest measured p50 TTFT via fireworks

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.

Runway Gen-4.5Z.ai: GLM 5.2

Model idrunway/gen-4.5z-ai/glm-5.2

Publisher Runway Z.AI

AI IQ — IQ 120#27

Context1,000 tokens1,048,576 tokens

Credits provider routes231

Cheapest routeselected route$2.2999/1M

Cached inputNot published$0.110775/1M to $0.81868/1M

Privacy postureprovider posture varieshas provider E2EE route

Fastest measured p50 TTFTnot enough data899 ms via fireworks

Highest measured throughputnot enough data48 tok/s via alibaba

Recent route uptime rangenot enough data0.00% to 100.00%

Modes chat

Runway Gen-4.5 routes

Overview2 Credits routes
PricingInput, cached input, and output rates
ProvidersAll serving providers

Z.ai: GLM 5.2 routes

Overview31 Credits routes
PricingInput, cached input, and output 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="runway/gen-4.5",
    messages=messages,
)

Questions

Which should I use, Runway Gen-4.5 or Z.ai: GLM 5.2?

Is Runway Gen-4.5 or Z.ai: GLM 5.2 cheaper?

The current cheapest TrustedRouter route is selected route for Runway Gen-4.5 and $2.2999/1M for Z.ai: GLM 5.2. The comparison uses current catalog prices and updates as provider pricing changes.

Is Runway Gen-4.5 or Z.ai: GLM 5.2 faster?

Current measured p50 time to first token is not enough data for Runway Gen-4.5 and 899 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 Runway Gen-4.5 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 runway/gen-4.5 and z-ai/glm-5.2. This makes side-by-side evals possible without maintaining two provider integrations.