OpenAI compatible API · Attested · Public status

SpaceXAI: Grok 4.3 vs Z.ai: GLM 5.2

SpaceXAI: Grok 4.3 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

Z.ai: GLM 5.2 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. Current TrustedRouter probes show SpaceXAI: Grok 4.3 with the lower p50 TTFT.

$3.95625/1MSpaceXAI: Grok 4.3 cheapest route

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

1077 msSpaceXAI: Grok 4.3 fastest measured p50 TTFT via atlas-cloud

1330 msZ.ai: GLM 5.2 fastest measured p50 TTFT via venice

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.

SpaceXAI: Grok 4.3Z.ai: GLM 5.2

Model idx-ai/grok-4.3z-ai/glm-5.2

Publisher xAI Grok Z.AI

AI IQ IQ 115#36 IQ 120#20

Context1,000,000 tokens1,048,576 tokens

Provider routes352

Cheapest route$3.95625/1M$2.2999/1M

Privacy postureprovider posture varieshas provider E2EE route

Fastest measured p50 TTFT1077 ms via atlas-cloud1330 ms via venice

Highest measured throughputnot enough data127 tok/s via telnyx

Recent route uptime range100.00%100.00%

Modes chat chat

SpaceXAI: Grok 4.3 routes

Overview3 endpoints
PricingPrompt and completion rates
ProvidersAll serving providers

Z.ai: GLM 5.2 routes

Overview52 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="x-ai/grok-4.3",
    messages=messages,
)

Questions

Which should I use, SpaceXAI: Grok 4.3 or Z.ai: GLM 5.2?

Is SpaceXAI: Grok 4.3 or Z.ai: GLM 5.2 cheaper?

The current cheapest TrustedRouter route is $3.95625/1M for SpaceXAI: Grok 4.3 and $2.2999/1M for Z.ai: GLM 5.2. The comparison uses current catalog prices and updates as provider pricing changes.

Is SpaceXAI: Grok 4.3 or Z.ai: GLM 5.2 faster?

Current measured p50 time to first token is 1077 ms for SpaceXAI: Grok 4.3 and 1330 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 SpaceXAI: Grok 4.3 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 x-ai/grok-4.3 and z-ai/glm-5.2. This makes side-by-side evals possible without maintaining two provider integrations.